http://ccows.csumb.edu/wiki/api.php?action=feedcontributions&user=Kaitlync&feedformat=atomCCoWS Wiki - User contributions [en]2024-03-29T06:01:12ZUser contributionsMediaWiki 1.22.2http://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-15T01:25:50Z<p>Kaitlync: </p>
<hr />
<div>Progress of the Lower Salinas Watershed's TMDL Implementation and Monitoring.<br />
<br />
A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards, the [[EPA]] implemented a list of 303(d) listed waterbodies under [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] of the [[Clean Water Act]] (CWA). This list is assessed through [[Total Maximum Daily Load (TMDL)]] standards.<br />
<br />
The [[Lower Salinas River Watershed]](LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
Further information on the Lower Salinas TMDL Reports and specifics (not related to Implementation & Monitoring): [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
[[Image:NitrateMeas andSources.png|375px|thumb|right|Map of The Lower Salinas River Watershed nitrate measurements and possible sources (from [[CCRWQCB]] 2012 draft TMDL report)]]<br />
<br />
Proposed implementation actions (section 7.3.3 in 2013 nutrients TMDL) include compliance with the [[Central Coast Region Agricultural Waiver]] (Ag order--''Order No. R3-2012-0011'') with the overarching goals of:<br />
*"Control[ling] discharge of nutrients to [[impaired waterbodies]] and<br />
*"Implement[ing] management practices capable of achieving interim and final [[Load Allocations]] identified in [the latest (2012)] TMDL".<br />
<br />
Irrigated agriculture has been identified as the dominant [[Total_Mean_Daily_Load_%28TMDL%29#Source_analysis| source]] contributing to the issue of nutrients in the [[LSRW]]. Regulations can follow those set forth in the [[Conditional waiver of waste discharge requirements for irrigated lands | Ag Waiver]]. It is also advisable for Water Board staff to incorporate educational outreach programs to encourage the adoption of [[Best Management Practices]] (BMPs) on all croplands.<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
==Water Quality Monitoring==<br />
<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
As of April 2016, no public monitoring reports have been released; but monitoring data is available ([[Lower Salinas River Watershed TMDL - Monitoring Data]]).<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_TMDL_-_Monitoring_DataLower Salinas River Watershed TMDL - Monitoring Data2016-04-15T01:25:09Z<p>Kaitlync: /* Links */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
=Summary=<br />
Under the [[Clean Water Act]] (CWA) the Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. Data is available through the [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] website. All monitoring is conducted by [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] under authority from the Ag Order (Order no. R3-2012-0011).<br />
<br />
=Status of Nitrate=<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Status of Un-ionized Ammonia=<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Status of Orthophosphate=<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]]<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_TMDL_-_Monitoring_DataLower Salinas River Watershed TMDL - Monitoring Data2016-04-15T01:24:02Z<p>Kaitlync: /* Summary */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
=Summary=<br />
Under the [[Clean Water Act]] (CWA) the Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. Data is available through the [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] website. All monitoring is conducted by [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] under authority from the Ag Order (Order no. R3-2012-0011).<br />
<br />
=Status of Nitrate=<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Status of Un-ionized Ammonia=<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Status of Orthophosphate=<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_TMDL_-_Monitoring_DataLower Salinas River Watershed TMDL - Monitoring Data2016-04-15T01:23:38Z<p>Kaitlync: /* Summary */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
=Summary=<br />
Under the [[Clean Water Act]] (CWA) the Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. Data is available through the [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] website. All monitoring is conducted by [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] under the Ag Order (Order no. R3-2012-0011) authority.<br />
<br />
=Status of Nitrate=<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Status of Un-ionized Ammonia=<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Status of Orthophosphate=<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_TMDL_-_Monitoring_DataLower Salinas River Watershed TMDL - Monitoring Data2016-04-15T01:22:59Z<p>Kaitlync: /* Summary */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
=Summary=<br />
Under the [[Clean Water Act]] (CWA) the Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. Data is available through the [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] website. All monitoring is conducted by [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] in compliance with the Ag Order (Order no. R3-2012-0011).<br />
<br />
=Status of Nitrate=<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Status of Un-ionized Ammonia=<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Status of Orthophosphate=<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_TMDL_-_Monitoring_DataLower Salinas River Watershed TMDL - Monitoring Data2016-04-15T01:21:53Z<p>Kaitlync: </p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
=Summary=<br />
Under the [[Clean Water Act]] (CWA) the Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. Data is available through the [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] website. <br />
<br />
=Status of Nitrate=<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Status of Un-ionized Ammonia=<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Status of Orthophosphate=<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_TMDL_-_Monitoring_DataLower Salinas River Watershed TMDL - Monitoring Data2016-04-14T20:38:25Z<p>Kaitlync: </p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
=Summary=<br />
Under the [[Clean Water Act]] (CWA) the Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
=Status of Nitrate=<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Status of Un-ionized Ammonia=<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Status of Orthophosphate=<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_TMDL_-_Monitoring_DataLower Salinas River Watershed TMDL - Monitoring Data2016-04-14T20:34:09Z<p>Kaitlync: </p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
=Status of Nitrate=<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Status of Un-ionized Ammonia=<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Status of Orthophosphate=<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-14T20:32:27Z<p>Kaitlync: /* Water Quality Monitoring */</p>
<hr />
<div>Progress of the Lower Salinas Watershed TMDL Implementation and Monitoring.<br />
<br />
A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards, the [[EPA]] implemented a list of 303(d) listed waterbodies under [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] of the [[Clean Water Act]] (CWA). This list is assessed through [[Total Maximum Daily Load (TMDL)]] standards.<br />
<br />
The [[Lower Salinas River Watershed]](LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
Further information on the Lower Salinas TMDL Reports and specifics (not related to Implementation & Monitoring): [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
[[Image:NitrateMeas andSources.png|375px|thumb|right|Map of The Lower Salinas River Watershed nitrate measurements and possible sources (from [[CCRWQCB]] 2012 draft TMDL report)]]<br />
<br />
Proposed implementation actions (section 7.3.3 in 2013 nutrients TMDL) include compliance with the [[Central Coast Region Agricultural Waiver]] (Ag order--''Order No. R3-2012-0011'') with the overarching goals of:<br />
*"Control[ling] discharge of nutrients to [[impaired waterbodies]] and<br />
*"Implement[ing] management practices capable of achieving interim and final [[Load Allocations]] identified in [the latest (2012)] TMDL".<br />
<br />
Irrigated agriculture has been identified as the dominant [[Total_Mean_Daily_Load_%28TMDL%29#Source_analysis| source]] contributing to the issue of nutrients in the [[LSRW]]. Regulations can follow those set forth in the [[Conditional waiver of waste discharge requirements for irrigated lands | Ag Waiver]]. It is also advisable for Water Board staff to incorporate educational outreach programs to encourage the adoption of [[Best Management Practices]] (BMPs) on all croplands.<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
==Water Quality Monitoring==<br />
<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
As of April 2016, no public monitoring reports have been released; but monitoring data is available ([[Lower Salinas River Watershed TMDL - Monitoring Data]]).<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_TMDL_-_Monitoring_DataLower Salinas River Watershed TMDL - Monitoring Data2016-04-14T20:32:25Z<p>Kaitlync: Created page with " ===Status of Nitrate=== The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be ove..."</p>
<hr />
<div><br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-14T20:31:59Z<p>Kaitlync: /* Water Quality Monitoring */</p>
<hr />
<div>Progress of the Lower Salinas Watershed TMDL Implementation and Monitoring.<br />
<br />
A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards, the [[EPA]] implemented a list of 303(d) listed waterbodies under [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] of the [[Clean Water Act]] (CWA). This list is assessed through [[Total Maximum Daily Load (TMDL)]] standards.<br />
<br />
The [[Lower Salinas River Watershed]](LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
Further information on the Lower Salinas TMDL Reports and specifics (not related to Implementation & Monitoring): [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
[[Image:NitrateMeas andSources.png|375px|thumb|right|Map of The Lower Salinas River Watershed nitrate measurements and possible sources (from [[CCRWQCB]] 2012 draft TMDL report)]]<br />
<br />
Proposed implementation actions (section 7.3.3 in 2013 nutrients TMDL) include compliance with the [[Central Coast Region Agricultural Waiver]] (Ag order--''Order No. R3-2012-0011'') with the overarching goals of:<br />
*"Control[ling] discharge of nutrients to [[impaired waterbodies]] and<br />
*"Implement[ing] management practices capable of achieving interim and final [[Load Allocations]] identified in [the latest (2012)] TMDL".<br />
<br />
Irrigated agriculture has been identified as the dominant [[Total_Mean_Daily_Load_%28TMDL%29#Source_analysis| source]] contributing to the issue of nutrients in the [[LSRW]]. Regulations can follow those set forth in the [[Conditional waiver of waste discharge requirements for irrigated lands | Ag Waiver]]. It is also advisable for Water Board staff to incorporate educational outreach programs to encourage the adoption of [[Best Management Practices]] (BMPs) on all croplands.<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
==Water Quality Monitoring==<br />
<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
As of April 2016, no public monitoring reports have been released; but monitoring data is available ([[Lower Salinas River Watershed TMDL - Monitoring Data]]). <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-14T20:29:03Z<p>Kaitlync: /* Water Quality Monitoring */</p>
<hr />
<div>Progress of the Lower Salinas Watershed TMDL Implementation and Monitoring.<br />
<br />
A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards, the [[EPA]] implemented a list of 303(d) listed waterbodies under [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] of the [[Clean Water Act]] (CWA). This list is assessed through [[Total Maximum Daily Load (TMDL)]] standards.<br />
<br />
The [[Lower Salinas River Watershed]](LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
Further information on the Lower Salinas TMDL Reports and specifics (not related to Implementation & Monitoring): [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
[[Image:NitrateMeas andSources.png|375px|thumb|right|Map of The Lower Salinas River Watershed nitrate measurements and possible sources (from [[CCRWQCB]] 2012 draft TMDL report)]]<br />
<br />
Proposed implementation actions (section 7.3.3 in 2013 nutrients TMDL) include compliance with the [[Central Coast Region Agricultural Waiver]] (Ag order--''Order No. R3-2012-0011'') with the overarching goals of:<br />
*"Control[ling] discharge of nutrients to [[impaired waterbodies]] and<br />
*"Implement[ing] management practices capable of achieving interim and final [[Load Allocations]] identified in [the latest (2012)] TMDL".<br />
<br />
Irrigated agriculture has been identified as the dominant [[Total_Mean_Daily_Load_%28TMDL%29#Source_analysis| source]] contributing to the issue of nutrients in the [[LSRW]]. Regulations can follow those set forth in the [[Conditional waiver of waste discharge requirements for irrigated lands | Ag Waiver]]. It is also advisable for Water Board staff to incorporate educational outreach programs to encourage the adoption of [[Best Management Practices]] (BMPs) on all croplands.<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
==Water Quality Monitoring==<br />
[[Lower Salinas River Watershed TMDL - Monitoring Data]]<br />
<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
As of April 2016, no <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-14T20:27:40Z<p>Kaitlync: /* Water Quality Monitoring */</p>
<hr />
<div>Progress of the Lower Salinas Watershed TMDL Implementation and Monitoring.<br />
<br />
A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards, the [[EPA]] implemented a list of 303(d) listed waterbodies under [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] of the [[Clean Water Act]] (CWA). This list is assessed through [[Total Maximum Daily Load (TMDL)]] standards.<br />
<br />
The [[Lower Salinas River Watershed]](LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
Further information on the Lower Salinas TMDL Reports and specifics (not related to Implementation & Monitoring): [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
[[Image:NitrateMeas andSources.png|375px|thumb|right|Map of The Lower Salinas River Watershed nitrate measurements and possible sources (from [[CCRWQCB]] 2012 draft TMDL report)]]<br />
<br />
Proposed implementation actions (section 7.3.3 in 2013 nutrients TMDL) include compliance with the [[Central Coast Region Agricultural Waiver]] (Ag order--''Order No. R3-2012-0011'') with the overarching goals of:<br />
*"Control[ling] discharge of nutrients to [[impaired waterbodies]] and<br />
*"Implement[ing] management practices capable of achieving interim and final [[Load Allocations]] identified in [the latest (2012)] TMDL".<br />
<br />
Irrigated agriculture has been identified as the dominant [[Total_Mean_Daily_Load_%28TMDL%29#Source_analysis| source]] contributing to the issue of nutrients in the [[LSRW]]. Regulations can follow those set forth in the [[Conditional waiver of waste discharge requirements for irrigated lands | Ag Waiver]]. It is also advisable for Water Board staff to incorporate educational outreach programs to encourage the adoption of [[Best Management Practices]] (BMPs) on all croplands.<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
==Water Quality Monitoring==<br />
[[Lower Salinas River Watershed Nutrient TMDL - Monitoring Data]]<br />
<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-14T20:26:13Z<p>Kaitlync: /* Action Taken since TMDL Approval */</p>
<hr />
<div>Progress of the Lower Salinas Watershed TMDL Implementation and Monitoring.<br />
<br />
A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards, the [[EPA]] implemented a list of 303(d) listed waterbodies under [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] of the [[Clean Water Act]] (CWA). This list is assessed through [[Total Maximum Daily Load (TMDL)]] standards.<br />
<br />
The [[Lower Salinas River Watershed]](LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
Further information on the Lower Salinas TMDL Reports and specifics (not related to Implementation & Monitoring): [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
[[Image:NitrateMeas andSources.png|375px|thumb|right|Map of The Lower Salinas River Watershed nitrate measurements and possible sources (from [[CCRWQCB]] 2012 draft TMDL report)]]<br />
<br />
Proposed implementation actions (section 7.3.3 in 2013 nutrients TMDL) include compliance with the [[Central Coast Region Agricultural Waiver]] (Ag order--''Order No. R3-2012-0011'') with the overarching goals of:<br />
*"Control[ling] discharge of nutrients to [[impaired waterbodies]] and<br />
*"Implement[ing] management practices capable of achieving interim and final [[Load Allocations]] identified in [the latest (2012)] TMDL".<br />
<br />
Irrigated agriculture has been identified as the dominant [[Total_Mean_Daily_Load_%28TMDL%29#Source_analysis| source]] contributing to the issue of nutrients in the [[LSRW]]. Regulations can follow those set forth in the [[Conditional waiver of waste discharge requirements for irrigated lands | Ag Waiver]]. It is also advisable for Water Board staff to incorporate educational outreach programs to encourage the adoption of [[Best Management Practices]] (BMPs) on all croplands.<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-14T20:22:22Z<p>Kaitlync: /* Initial Implementation */</p>
<hr />
<div>Progress of the Lower Salinas Watershed TMDL Implementation and Monitoring.<br />
<br />
A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards, the [[EPA]] implemented a list of 303(d) listed waterbodies under [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] of the [[Clean Water Act]] (CWA). This list is assessed through [[Total Maximum Daily Load (TMDL)]] standards.<br />
<br />
The [[Lower Salinas River Watershed]](LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
Further information on the Lower Salinas TMDL Reports and specifics (not related to Implementation & Monitoring): [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
[[Image:NitrateMeas andSources.png|375px|thumb|right|Map of The Lower Salinas River Watershed nitrate measurements and possible sources (from [[CCRWQCB]] 2012 draft TMDL report)]]<br />
<br />
Proposed implementation actions (section 7.3.3 in 2013 nutrients TMDL) include compliance with the [[Central Coast Region Agricultural Waiver]] (Ag order--''Order No. R3-2012-0011'') with the overarching goals of:<br />
*"Control[ling] discharge of nutrients to [[impaired waterbodies]] and<br />
*"Implement[ing] management practices capable of achieving interim and final [[Load Allocations]] identified in [the latest (2012)] TMDL".<br />
<br />
Irrigated agriculture has been identified as the dominant [[Total_Mean_Daily_Load_%28TMDL%29#Source_analysis| source]] contributing to the issue of nutrients in the [[LSRW]]. Regulations can follow those set forth in the [[Conditional waiver of waste discharge requirements for irrigated lands | Ag Waiver]]. It is also advisable for Water Board staff to incorporate educational outreach programs to encourage the adoption of [[Best Management Practices]] (BMPs) on all croplands.<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Enforcement==<br />
<br />
Most of the enforcement measures have been under the Ag Order for mandatory monitoring fees. The following list are Civil Liability cases: <br />
*West Coast Farms & Garcia Farms (Order No. R3-2012-0032A) <ref>[http://www.swrcb.ca.gov/rwqcb3/board_decisions/tentative_orders/2012/2012_0032_Garcia%20Farms_ACLC_All.pdf Order No. R3-2012-0032A: West Coast Farms & Garcia Farms]</ref><br />
*<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-14T19:42:54Z<p>Kaitlync: /* Initial Implementation */</p>
<hr />
<div>Progress of the Lower Salinas Watershed TMDL Implementation and Monitoring.<br />
<br />
A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards, the [[EPA]] implemented a list of 303(d) listed waterbodies under [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] of the [[Clean Water Act]] (CWA). This list is assessed through [[Total Maximum Daily Load (TMDL)]] standards.<br />
<br />
The [[Lower Salinas River Watershed]](LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
Further information on the Lower Salinas TMDL Reports and specifics (not related to Implementation & Monitoring): [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
[[Image:NitrateMeas andSources.png|375px|thumb|right|Map of The Lower Salinas River Watershed nitrate measurements and possible sources (from [[CCRWQCB]] 2012 draft TMDL report)]]<br />
<br />
Proposed implementation actions (section 7.3.3 in 2013 nutrients TMDL) include compliance with the [[Central Coast Region Agricultural Waiver]] (Ag order--''Order No. R3-2012-0011'') with the overarching goals of:<br />
*"Control[ling] discharge of nutrients to [[impaired waterbodies]] and<br />
*"Implement[ing] management practices capable of achieving interim and final [[Load Allocations]] identified in [the latest (2012)] TMDL".<br />
<br />
Irrigated agriculture has been identified as the dominant [[Total_Mean_Daily_Load_%28TMDL%29#Source_analysis| source]] contributing to the issue of nutrients in the [[LSRW]]. Regulations can follow those set forth in the [[Conditional waiver of waste discharge requirements for irrigated lands | Ag Waiver]]. It is also advisable for Water Board staff to incorporate educational outreach programs to encourage the adoption of [[Best Management Practices]] (BMPs) on all croplands.<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
===Enforcement===<br />
<br />
*Cal Pacific Specialty Foods - 10/6/2015 (S420265)<br />
*Fresh Express Inc - 10/26/2015 (S421543)<br />
*Americold - 10/26/2015 (S421546)<br />
*Nielsen Trucking Co Union Pacific - 11/20/2015 (S421616)<br />
*North Monterey County Unified SD - 11/20/2015 (S421617)<br />
*Salinas Real Property - 11/20/2015 (S421625)<br />
*Salinas Union High School District - 11/20/2015 (S421626)<br />
*<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-14T19:33:34Z<p>Kaitlync: /* Action Taken since TMDL Approval */</p>
<hr />
<div>Progress of the Lower Salinas Watershed TMDL Implementation and Monitoring.<br />
<br />
A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards, the [[EPA]] implemented a list of 303(d) listed waterbodies under [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] of the [[Clean Water Act]] (CWA). This list is assessed through [[Total Maximum Daily Load (TMDL)]] standards.<br />
<br />
The [[Lower Salinas River Watershed]](LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
Further information on the Lower Salinas TMDL Reports and specifics (not related to Implementation & Monitoring): [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
[[Image:NitrateMeas andSources.png|375px|thumb|right|Map of The Lower Salinas River Watershed nitrate measurements and possible sources (from [[CCRWQCB]] 2012 draft TMDL report)]]<br />
<br />
Proposed implementation actions (section 7.3.3 in 2013 nutrients TMDL) include compliance with the [[Central Coast Region Agricultural Waiver]] (Ag order--''Order No. R3-2012-0011'') with the overarching goals of:<br />
*"Control[ling] discharge of nutrients to [[impaired waterbodies]] and<br />
*"Implement[ing] management practices capable of achieving interim and final [[Load Allocations]] identified in [the latest (2012)] TMDL".<br />
<br />
Irrigated agriculture has been identified as the dominant [[Total_Mean_Daily_Load_%28TMDL%29#Source_analysis| source]] contributing to the issue of nutrients in the [[LSRW]]. Regulations can follow those set forth in the [[Conditional waiver of waste discharge requirements for irrigated lands | Ag Waiver]]. It is also advisable for Water Board staff to incorporate educational outreach programs to encourage the adoption of [[Best Management Practices]] (BMPs) on all croplands.<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-14T19:32:29Z<p>Kaitlync: </p>
<hr />
<div>Progress of the Lower Salinas Watershed TMDL Implementation and Monitoring.<br />
<br />
A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards, the [[EPA]] implemented a list of 303(d) listed waterbodies under [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] of the [[Clean Water Act]] (CWA). This list is assessed through [[Total Maximum Daily Load (TMDL)]] standards.<br />
<br />
The [[Lower Salinas River Watershed]](LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
Further information on the Lower Salinas TMDL Reports and specifics (not related to Implementation & Monitoring): [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
[[Image:NitrateMeas andSources.png|375px|thumb|right|Map of The Lower Salinas River Watershed nitrate measurements and possible sources (from [[CCRWQCB]] 2012 draft TMDL report)]]<br />
<br />
Proposed implementation actions (section 7.3.3 in 2013 nutrients TMDL) include compliance with the [[Central Coast Region Agricultural Waiver]] (Ag order--''Order No. R3-2012-0011'') with the overarching goals of:<br />
*"Control[ling] discharge of nutrients to [[impaired waterbodies]] and<br />
*"Implement[ing] management practices capable of achieving interim and final [[Load Allocations]] identified in [the latest (2012)] TMDL".<br />
<br />
Irrigated agriculture has been identified as the dominant [[Total_Mean_Daily_Load_%28TMDL%29#Source_analysis| source]] contributing to the issue of nutrients in the [[LSRW]]. Regulations can follow those set forth in the [[Conditional waiver of waste discharge requirements for irrigated lands | Ag Waiver]]. It is also advisable for Water Board staff to incorporate educational outreach programs to encourage the adoption of [[Best Management Practices]] (BMPs) on all croplands.<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-14T19:31:47Z<p>Kaitlync: </p>
<hr />
<div>Progress of the Lower Salinas Watershed TMDL Implementation and Monitoring.<br />
<br />
A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards, the [[EPA]] implemented a list of 303(d) listed waterbodies under [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] of the [[Clean Water Act]] (CWA). This list is assessed through [[Total Maximum Daily Load (TMDL)]] standards.<br />
<br />
The [[Lower Salinas River Watershed]](LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
Further information on the Lower Salinas TMDL Reports and specifics (not related to Implementation & Monitoring): [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
[[Image:NitrateMeas andSources.png|375px|thumb|right|Map of The Lower Salinas River Watershed nitrate measurements and possible sources (from [[CCRWQCB]] 2012 draft TMDL report)]]<br />
<br />
Proposed implementation actions (section 7.3.3 in 2013 nutrients TMDL) include compliance with the [[Central Coast Region Agricultural Waiver]] (Ag order--''Order No. R3-2012-0011'') with the overarching goals of:<br />
*"Control[ling] discharge of nutrients to [[impaired waterbodies]] and<br />
*"Implement[ing] management practices capable of achieving interim and final [[Load Allocations]] identified in [the latest (2012)] TMDL".<br />
<br />
Irrigated agriculture has been identified as the dominant [[Total_Mean_Daily_Load_%28TMDL%29#Source_analysis| source]] contributing to the issue of nutrients in the [[LSRW]]. Regulations can follow those set forth in the [[Conditional waiver of waste discharge requirements for irrigated lands | Ag Waiver]]. It is also advisable for Water Board staff to incorporate educational outreach programs to encourage the adoption of [[Best Management Practices]] (BMPs) on all croplands.<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/TMDL_for_Nutrients_in_Lower_Salinas_River_Watershed,_Monterey_County,_CaliforniaTMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California2016-04-14T19:28:19Z<p>Kaitlync: /* Monitoring */</p>
<hr />
<div>A [[Watershed Issues|watershed-related issue]] examined by the [http://sep.csumb.edu/wiki/index.php/ENVS_560/L_Watershed_Systems ENVS 560/L Watershed Systems] class at [http://csumb.edu CSUMB].<br />
<br />
==Summary==<br />
The [[Salinas River]] [[Lower Salinas River Watershed|Watershed]], which includes the Nacimiento River, San Antonio River, Estrella River, and Arroyo Seco River, encompasses approximately 4,600 square miles within the [[Monterey Bay Region]] of California. The Lower Salinas River Watershed (LSRW) supplies water for many cities on California's Central Coast, from San Luis Obispo to Salinas (with their intensively farmed, productive agricultural valleys). The river flows into one of the world's most diverse marine ecosystems (CITE), [[Monterey Bay National Marine Sanctuary (MBNMS)]] at [[Moss Landing Harbor]] carrying pollutants acquired as it flows. The [[Salinas River]] is designated by the California State Water Resources Control Board ([[SWRCB]]) as one of the most critical watersheds in California due to degrading habitats and [[nonpoint source]] pollution impacts on water quality. Anthropogenic sources of [[nutrient loading]] to the Salinas River are a particular concern, given the high amount of agricultural [[land use]] within the LSRW. <br />
<br />
[[Image:Lower Salinas River Watershed.png|375px|thumb|Map of the Lower Salinas River Watershed (by Alberola 2011)]]<br />
<br />
== Nutrient TMDLs in the Lower Salinas Watershed == <br />
<br />
The [[Total Maximum Daily Load]] (TMDL) for [[Nutrients]] in the LSRW is determined by the [http://www.swrcb.ca.gov Regional Water Quality Control Board] [http://www.swrcb.ca.gov/rwqcb3 Central Coast Region (CCRWQCB)]. The TMDL for nutrients for the LSRW has been in development for many years and a preliminary draft project report for the LSRW and the [[Moro Cojo Slough]] subwatershed was completed in 2012.<br />
<br />
==2010 TMDL Report == <br />
<br />
The CCRWQCB presented a [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nut_dataanalyrpt_061410.pdf progress report] in June 2010 that contains background information, provisional [[Nutrient target|nutrient targets]], and a compilation of water quality data for water bodies in the region. The 2010 progress report identifies potential [[Nutrient load|nutrient load]] sources. A draft source analysis portion of the TMDL project is available from the 2012 draft TMDL document<ref name="TMDLs nutrients LSRW 2012"/> ('''UPDATE'''). <br />
<br />
The 2010 [[303(d) list]] of Impaired Waterbodies is the current and active list for the California Central Coast. In 2010, the CCRWQCB presented an updated list in its 2010 Integrated Report, but this report has not yet been approved by the US EPA<ref name="US EPA-approved TMDLs 2012">SWRCB list of US EPA approved and effective TMDLs for California [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/status.shtml]</ref>.<br />
<br />
The TMDL [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nut_dataanalyrpt_061410.pdf progress report] did not address 'critical' environmental factors associated with nutrient loading in the LSRW, in which a slight increase in nutrients could lead to exceedance of water quality objectives. However, the progress report does specify some indicators that can impair the beneficial uses of the regional water bodies. <br />
<br />
Data analysis for the June 2010 California Regional Water Board Progress Report included:<br />
<br />
* A delineation of watershed boundaries <br />
* A list of subwatersheds<br />
* Stream classification, which revealed in general low gradient streams on the valley floor were perennial, and many headwater streams tended to be ephemeral<br />
* An assessment of groundwater as baseflow. For the TMDL project area baseflow index values for groundwater ranged from 38 to 26 percent <br />
* An assessment of mean groundwater nitrate concentrations for the project area. Values reported ranged from 0.1-10.0 mg/l to 100.1-200.0 mg/l of nitrate<br />
* An assessment of mean annual precipitation for the project area. For the project area values ranged between 11.1 inches to 33.5 inches on average annually<br />
* An analysis of land use and land cover. In the project area, land uses include approximately 34% farmland, 31% grazing land, 8% urban, and 26% undeveloped/forested/restricted<br />
<br />
==2012 TMDL Report ==<br />
The 2012 CCRWQCB project report draft of [[TMDLs in the Monterey Bay Region of California |TMDL]] for nutrients in the [[Lower Salinas River Watershed]] (LSRW) (Monterey County, CA)<ref name="TMDLs nutrients LSRW 2012">Link to Central Coast Water Quality Control Board's ''draft'' TMDLs for Nutrients in the Lower Salinas Watershed [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/nutrients/index.shtml]</ref> is titled: ''Total Maximum Daily Loads for Nitrogen Compounds and Orthophosphate ''for the'' Lower Salinas River and Reclamation Canal Basin, and the Moro Cojo Slough Subwatershed, Monterey County, California'' AND WAS COMPLETED/FILLED DATE. Nutrients are defined as biologically-accessible nitrogen compounds and orthophosphate loading into waterways of the LSRW. <br />
<br />
This draft report indicates a proposed geographic scope of around 405 acres in the [[Lower Salinas Valley]] of northern [[Monterey County]], focused on the two major drainages, the [[Reclamation Canal Drainage]] and the [[Lower Salinas River Drainage]] (pictured at right). The [[Moro Cojo Slough|Moro Cojo subwatershed]] is identified as a subwatershed in the report. <br />
<br />
The ultimate receiving body (drainage) of both waterways and tributaries is the [[Monterey Bay]] and the [[Monterey Bay National Marine Sanctuary]]. Pollutants addressed by the proposed 2012 TMDL draft are nitrate, un-ionized ammonia, and orthophosphate. Reductions in pollutants are expected to target [[303(d)]]-listed impairments from low dissolved oxygen (DO) and chlorophyll-''a'' within the project area. These impairments relate to the [[biostimulatory]] effects of nitrate and orthophosphate on freshwater systems.<br />
<br />
According to the draft TMDL report (2012): <br />
<blockquote><br />
"Discharges of nitrogen compounds and orthophosphate are occurring at levels in surface waters which are impairing a wide spectrum of beneficial uses and, therefore, constitute a serious water quality problem. The municipal and domestic drinking water supply (MUN, GWR) beneficial uses and the range of aquatic habitat beneficial uses are currently impaired; potential or future beneficial uses of the agricultural irrigation water supply (AGR) for sensitive crops may be impaired. A total of 34 waterbody/pollutant combinations are impaired due to exceedances of water quality objectives. The pollutants addressed in this TMDL are nitrate, un-ionized ammonia, and orthophosphate. Orthophosphate is included as a pollutant due to biostimulatory impairments of surface waters. Reducing these pollutants is also anticipated to address several 303(d)-listed dissolved oxygen and chlorophyll a impairments in the TMDL project area. As a result of these conditions, beneficial uses are not being protected." <br />
''and'' <br />
<br><br />
"By developing TMDLs for the aforementioned pollutants, the water quality standards violations being addressed in this TMDL include:<br />
* Violations of drinking water standard for nitrate<br />
* Violations of the Basin Plan general toxicity objective for inland surface waters and estuaries (violations of un-ionized ammonia objective)<br />
* Violations of the Basin Plan narrative general objective for biostimulatory substances in inland surface waters and estuaries (as expressed by excessive nutrients, chlorophyll a, algal biomass, and low dissolved oxygen)"<br />
</blockquote><br />
<br><br />
According to the CCWRQCB draft TMDL nutrient report (2012): <br />
<blockquote>"''There does not appear to be a significant geologic reservoir in the project area that could contribute to elevated nitrogen loads to surface waters.''"<br />
</blockquote><br />
<br />
[[Eutrophication]] of waterways may occur when excess nutrients are present and environmental conditions promote algal growth. Biologically-accessible nitrogen and phosphorus are ''limiting nutrients'' in many ecosystems (CITE). In general, sources of nutrients in watersheds include: urban runoff, fertilizers, groundwater, livestock, wastewater treatment plants, and septic systems. Specifically for the Lower Salinas River Watershed (Anderson et al. 2003) <ref name="Anderson et al. 2003"> [http://ccows.csumb.edu/pubs/reports/CCoWS_NutrientSources_030529b_ta.pdf Anderson T, Watson F, Newman W, Hager J, Kozlowski D, Casagrande J, Larson J. 2003. Nutrients in surface waters of the southern Monterey Bay watersheds. Central Coast Watershed Studies]</ref> identified [[irrigated agriculture]] as the dominant source of nutrients in watersheds in the region.<br />
<br />
According to the [[SWRCB]]-contracted UC Davis report<ref name="Nitrate report: Senate Bill X2 1 report">UC Davis contract study report on the Tulare Valley and Lower Salinas Watershed addressing nitrates in the California's drinking water [http://groundwaternitrate.ucdavis.edu/files/138956.pdf]</ref> (Harter and Lund 2012) on nitrate in California's Drinking Water for the [[State Water Resources Control Board]] (SWRCB), nitrates are reducing quality of drinking water from shallow wells. The report concludes that: "Most nitrate in drinking water wells today was applied to the surface decades ago." <br />
<br />
The report is part of a contracted study for the SWRCB as part of the Senate-mandated ''Groundwater Nitrate Project'' as part of biannual reporting on initial studies into nitrate effects on drinking water in the Tulare Basin and Salinas Valley. The report also cites agriculture as the estimated source of 96% of nitrate loading to groundwater--200 Gg/yr (1 Gg = 1100 tons) within these regions, with the next largest (estimated) source (wastewater treatment and food processing wastes) loading 3.2 Gg nitrate/yr to groundwater.<br />
<br />
[[Image:Majordrain TMDL projarea.png|325px|thumb|right|Map of major drainages in the nutrient TMDL draft (2012) for the [[Lower Salinas River Watershed]]<ref name="TMDLs nutrients LSRW 2012"/>.]]<br />
<br />
[[Image:TMDL Impairment Map.png|275px|thumb|right|Latest map of impaired ([[303(d) list]]ed) waterways of the Lower Salinas River Watershed) (2010)]]<br />
<br />
== Nutrient Pollutants in the Lower Salinas Watershed == <br />
<br />
Nutrient pollutants are of concern because of direct and indirect effects on freshwater aquatic habitats and groundwater stores.<br />
<br />
Information on the implementation and monitoring can be found here: [[Lower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress]]. <br />
<br />
The [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nut_dataanalyrpt_061410.pdf June 2010 California Regional Water Board Nutrient TMDL Progress Report] acknowledges that the presence of excess nutrients does not directly impair waterways, rather, indirect impacts ''associated'' with the presence of excess nutrients diminish beneficial uses of waterways. <br />
<br />
Secondary indicators of eutrophication ("biostimulation") such as nuisance algal blooms, drastic diel swings in dissolved oxygen concentrations, and loss of habitat must also be monitored and documented as they are more directly linked to the beneficial uses of waterways than nutrient concentrations alone.<br />
<br />
=== Numeric Targets ===<br />
The [[CCRWQCB]] issued a [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf TMDL concise tabular summary] in 2013. The summary clearly identifies numeric targets for Nitrate as N, orthophosphate as P, and un-ionized ammonia as N during the Dry season, Wet season and Year round. The numeric targets are as follows:<br />
<br />
'''Dry Season (May 1 - Oct 31):'''<br />
Nitrate as N: must not exceed 1.4 to 6.4 mg/L in impaired receiving waters, depending on specific stream reach.<br />
Orthophosphate as P: must not exceed 0.7 to 0.13 mg/L in impaired recieving waters, depending on specific stream reach.<br />
<br />
'''Wet Season (Nov 1 - Apr 30):'''<br />
Nitrate as N: must not exceed 8 mg/L in impaired receiving waters, depending on specific stream reach.<br />
Orthophosphate as P: must not exceed 0.3 mg/L in impaired recieving waters, depending on specific stream reach.<br />
<br />
'''Year Round:'''<br />
Nitrate as N: must not exceed 10 mg/L in all recieving water designated MUN<br />
Un-ionized ammonia as N: must not exceed 0.025 mg/L in all receiving waters<br />
<br />
The [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nut_dataanalyrpt_061410.pdf progress report] described that one uniform nutrient target may not be sufficient in light of the large variability of stream morphology and hydraulics in the waterbodies contributing to the Lower Salinas River. The report explored a variety of ways to define a range of numeric targets. Final nutrient targets can be developed based on either calculations or estimations. The percentile based approach calculates the numeric target by using either the 25th percentile of nutrient data from reference streams or the 75th percentile of all nutrient data for the project area streams. The [[nutrient numeric endpoints]] (NNE) approach estimates in-stream benthic algal response to ambient stream conditions. <br />
<br />
Based on these approaches, the provisional and preliminary numeric targets for total nitrogen listed in the [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nut_dataanalyrpt_061410.pdf progress report] range from 1.4-2.2 mg/L depending on waterbody type. <br />
<br />
[[Image:Biostim 2 TMDL2012.png|275px|thumb|right|Photographic documentation of waterways with high eutrophication (biostimulation) in the Lower Salinas River Watershed (from 2012 TMDL draft report)]]<br />
<br />
=== Source Analysis ===<br />
A draft [[source analysis]] for nutrients in the Lower Salinas River watershed has not been completed as of March 2016. The report uses STEPL (Spreadsheet Tool for Estimating Pollutant Load) to calculate nutrient loads (nitrogen and phosphorus--N and P) from various characteristics including watershed area, and nutrient loads (based on land use and land cover--[[LULC]]). These estimates are made at the project-area scale (405 acres), and can be recalculated for individual subwatersheds. The report cites a 1999 US EPA report and states, "''both nitrogen and phosphorus reach surface waters at an elevated rate as a result of human activities''."<br />
<br />
This analysis reports estimates for urban annual N Load (lb/yr) and P Load (lb/yr) at 138,391 and 21,796 respectively. <br />
<br />
Cropland estimates of N and P loading at 2,211,230 and 629,492 lbs/year by far made up the greatest proportion of source loads identified in the project area. Total N and P loading (lbs/year) were 2,911,676 and 793,236 respectively. This means that agriculture represents 76% of N and 79% of P loading in the area. <br />
<br />
Grazing (209,521; 123,412) and forest (27,649; 11,327) also make contributions as well. <br />
<br />
Because shallow groundwater acts as a reservoir for elevated concentrations of nitrogen and phosphorus in the region<ref name="Nitrate report: Senate Bill X2 1 report"/>, their contribution to baseflow in streams becomes a prominent source of surface water nutrients in the dry (summer) season. These groundwater to surface water nutrient additions amount to 323,957 and 6,985 lbs/year nitrogen and phosphorus loading, respectively. Citing the Tetratech (2003) reporting (CITE), the draft TMDL report (2012) notes: <blockquote> "''...groundwater loads appear to be overwhelmingly due to human influences on groundwater in the project area.''" </blockquote><br />
<br />
Atmospheric deposition made up a less proportionate impact on N and P loading, however, it may have a disproportionate impact in terms of nutrient loading on lakes and reservoirs due to their high surface area. Atmospheric deposition annual load (lbs./year) were 899 and 211, respectively.<br />
<br />
There is a [http://ccows.csumb.edu/pubs/reports/CCoWS_NutrientSources_030529b_ta.pdf preliminary source analysis] prepared by Anderson, et al. (2003) that identified [[irrigated agriculture]] as a dominant source for high nutrient concentrations in southern Monterey Bay watersheds. The report notes that the source assignment is strongly ''qualitatively'' suggested "through "overwhelming" correlation of nutrient concentration data and land use."<br />
<br />
A study by the Lawrence Livermore National Laboratory (CITE Moran et al. 2011) demonstrated concurrent results, based of geochemical and isotopic signatures pointing to irrigated agriculture as the largest source of nitrate to surface and groundwater in areas sampled of the Salinas Valley. Specifically, isotopic signatures of oxygen matched inorganic fertilizers, and ''not'' those ranges expected from animal waste. The 2012 TMDL draft report acknowledges limitations in the geographic scope of the 2011 LLNL study in not being extrapolated to areas of the LSRW, while pointing out the utility of the study in backing, " ...the mass balance-based source analysis developed in this TMDL project report." Importantly, this study contrasts with Harter-Lund contract report for the SWRCB (2012) which states that the nitrate found in shallow groundwater comes from nutrient applications from decades ago (dairy waste or animal manure application).<br />
<br />
<br />
=== Monitoring ===<br />
<br />
The [[Environmental Protection Agency]] Nutrient TMDL development protocol document (2000) <ref name= "EPA doc" >[http://www.epa.gov/owow/tmdl/nutrient/pdf/nutrient.pdf]</ref> suggested steps include: <br />
<br />
*identifying key questions <br />
*evaluating monitoring options ''and'' <br />
*implementing the monitoring program. <br />
<br><br />
<br />
Irrigated agriculture has been identified as the dominant nutrient source contribution to the Lower Salinas River Watershed. As such, the monitoring plan for the LSRW necessarily focuses on quantifying agricultural nutrient [[source analysis]]. Monitoring may be informed by requirements outlined in the [[Conditional waiver of waste discharge requirements for irrigated lands | Ag Waiver]] evaluating results to ensure that agricultural [[best management practices]] (BMPs) are adequate to reduce nutrient levels.<br />
<br />
Urban stormwater runoff is another important source of nutrients in the LSRW. As the City of Salinas has already implemented a [http://www.ci.salinas.ca.us/services/maintenance/pdf/SalinasSMP_QAPP.pdf Storm Water Monitoring Program] water board staff should evaluate their results to ensure the Storm Water Management Program is effective at reducing nutrient effluent and has implemented [[Best Management Practices]].<br />
<br />
The [[MOS]] for the Lower Salinas River Watershed is dependent on the assumptions put into the INN benthic biomass modeler. <br />
<br />
In establishing TMDL allocations in the Lower Salinas River Watershed for nutrients, the Regional Water Quality Control Board could approach the allocations in a similar fashion as that taken in the Pajaro River Nitrate TMDL. By setting the [[load allocation]]s as a concentration at or below the [[numeric target]] for all sources, future growth and changes in land use will not lead to an exceedance of the TMDL. This will also eliminate the need for setting critical conditions based on changes in flow rate, which would absolutely be required if allocations were set as loads given in mass.<br />
<br />
The following table details impaired water bodies within the Salinas Watershed, and the justification for nutrient-related listing in the 2006, 2010, and 2012 impairment list. The list comprises 20 listed waterbodies with a combined six sources of impairment. <br />
<br />
Monitoring information can be found here: [[Lower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress]]<br />
<br />
<br>(No data reported past March 2010)<br />
<br />
{|border="2"<br />
!style="background: #efefef;" | Water Body<br />
!style="background: #efefef;" | 2006 Listed Impairment<br />
!style="background: #efefef;" | 2010 Listed Impairment<br />
!style="background: #efefef;" | 2012 Listed Impairment<br />
<br />
|-<br />
| Alisal Creek<br />
| Nutrient<br />
| Chlorophyll-a, Nitrate<br />
| Ammonia (Un-ionized), Chlorophyll-a<br />
|-<br />
| Alisal Slough <br />
| Not Listed<br />
| Low Dissolved Oxygen, Nitrate<br />
| Low Dissolved Oxygen, Nitrate (biostimulatory*) <br />
|-<br />
| [[Blanco Drain]]<br />
| Not Listed<br />
| Low Dissolved Oxygen, Nitrate<br />
| Low Dissolved Oxygen, Nitrate (biostimulatory) <br />
|-<br />
| Chualar Creek<br />
| Not Listed<br />
| Ammonia (Un-ionized), Nitrate<br />
| Nitrate (drinking water)<br />
|-<br />
| Esperanza Creek<br />
| Not Listed<br />
| Nitrate<br />
| Nitrate (drinking water), (NO DATA on un-ionized ammonia)<br />
|-<br />
| Espinosa Slough<br />
| Not Listed<br />
| Ammonia (Un-ionized), Nitrate<br />
| Ammonia (Un-ionized), Nitrate (drinking water)<br />
|-<br />
| Gabilan Creek<br />
| Nitrate<br />
| Ammonia (Un-ionized), Nitrate<br />
| Nitrate (drinking water)<br />
|-<br />
| Lower Reclamation Canal<br />
| N/A<br />
| N/A<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate (biostimulatory)<br />
|-<br />
| Lower Salinas River <br />
| N/A<br />
| N/A<br />
| Nitrate (biostimulatory)<br />
|-<br />
| Merrit Ditch<br />
| Not Listed<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate (biostimulatory)<br />
|-<br />
| [[Moro Cojo Slough]]<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen<br />
|-<br />
| Natividad Creek<br />
| Nitrate<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate (biostimulatory)<br />
|-<br />
| Old Salinas River<br />
| Not Listed<br />
| Chlorophyll-a, Low Dissolved Oxygen, Nitrate<br />
| Chlorophyll-a, Low Dissolved Oxygen, Nitrate (biostimulatory)<br />
|-<br />
| Old Salinas River Estuary<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nutrients<br />
| Nutrients<br />
| N/A (not in 2012 report?)<br />
|-<br />
| Quail Creek<br />
| Nutrients<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate<br />
| Ammonia (Un-ionized), Nitrate (drinking water)<br />
|-<br />
| Salinas Reclamation Canal<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate (biostimulatory)<br />
|-<br />
| Salinas River (lower, estuary near Gonzales Rd. Crossing)<br />
| Nitrate, Nutrients<br />
| Nitrate<br />
| Nitrate (biostimulatory)<br />
|-<br />
| Salinas River Lagoon (North)<br />
| Nutrients<br />
| Nutrients<br />
| N/A (not in 2012 report?)<br />
|-<br />
| Santa Rita Creek <br />
| Nitrate <br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate (drinking water)<br />
|-<br />
| [[Tembladero Slough]]<br />
| Ammonia (Un-ionized), Nutrients**<br />
| Chlorophyll-a, Nitrate, Nutrients**<br />
| Chlorophyll-a, Nitrate (biostimulatory), Nutrients<br />
|-<br />
|}<br />
*Nitrate is divided into [[biostimulatory]] impairment concentrations and drinking water impairment concentrations of 1.7-6.4 and 10 mg/L respectively.<br />
**Nutrient impairment refers to the biostimulatory effects of orthophosphate on [[algal bloom]] impairment.<br />
<br />
== Nitrate example ==<br />
[[Image:Nitrate Map 2012TMDLDraftReport.png|350px|right|thumb|Surface nitrate concentrations and estimated source contributions in the [[LSRW]].]]<br />
<br />
The project report completed in March 2013 by the California Regional Water Quality Control Board, (CRWQCB) Central Coast Region ([[CCRWQCB]]) on TMDLs for nutrients in the Lower Salinas River Watershed<ref name="TMDLreport"> [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf LSRW Nutrient TMDL Staff Report]</ref> Link to Waterboard TMDLs for Nutrients in the Lower Salinas Watershed [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/nutrients/index.shtml]</ref>.<br />
<br />
In this document, the work group identifies multiple [[Beneficial uses (Clean Water Act)|beneficial uses]] (BUs) as impaired, including those for drinking water supply, livestock watering, and aquatic habitat BUs.<br />
<br />
From the 2013 project report<ref name="TMDLreport"/>: <br />
<blockquote><br />
"''Problem Statement'':<br />
''"Discharges of nitrogen compounds and orthophosphate are occurring at levels in surface waters<br />
which are impairing a wide spectrum of beneficial uses and, therefore, constitute a serious <br />
water quality problem. The municipal and domestic drinking water supply (MUN, GWR) <br />
beneficial uses and the range of aquatic habitat beneficial uses are currently impaired; potential <br />
or future beneficial uses of the agricultural irrigation water supply (AGR) for sensitive crops may <br />
be impaired..." <br /><br />"A total of 34 <br />
waterbody/pollutant combinations are impaired due to exceedances of water quality objectives. <br />
The pollutants addressed in this TMDL are nitrate, un-ionized ammonia, and orthophosphate –<br />
orthophosphate is included as a pollutant due to biostimulatory impairments of surface waters. <br />
Reducing these pollutants is also anticipated to address several 303(d)-listed dissolved oxygen <br />
and chlorophyll a impairments in the TMDL project area."''<br />
</blockquote><br />
<br />
== Beneficial Uses (BUs) Associated with Waterways Listed for Nutrient Impairments ==<br />
<br />
[[Beneficial uses]] of waterways and water quality objectives are vital to determining water quality standards and goals. Below is a list of BUs, and a table showing identified BUs for water bodies within the Salinas watershed.<br />
<br />
* Municipal and Domestic supply (MUN)<br />
* Agriculture (AGR)<br />
* Industrial Process (PRO)<br />
* Industrial Service (IND)<br />
* Ground Water Recharge (GWR)<br />
* Water Contact Recreation (REC1)<br />
* Non-Contact Water Recreation (REC2)<br />
* Cold Freshwater Habitat (COLD)<br />
* Warm Freshwater Habitat (WARM)<br />
* Estuarine Habitat (EST)<br />
* Wildlife Habitat (WILD)<br />
* Rare, Threatened, or Endangered Species (RARE)<br />
* Migration of Aquatic Organisms (MIGR)<br />
* Spawning, Reproduction, and/or Early Development (SPWN)<br />
* Biological Habitats of Special Significance (BIOL)<br />
* Shellfish Harvesting (SHELL)<br />
* Commercial and Sport Fishing (COMM)<br />
* Freshwater replenishment (FRESH)<br />
<br />
{| border="3"<br />
!style="background: #efefef;" | Waterbody<br />
!style="background: #efefef;" | MUN<br />
!style="background: #efefef;" | AGR<br />
!style="background: #efefef;" | PRO<br />
!style="background: #efefef;" | IND<br />
!style="background: #efefef;" | GWR<br />
!style="background: #efefef;" | REC1<br />
!style="background: #efefef;" | REC2<br />
!style="background: #efefef;" | WILD<br />
!style="background: #efefef;" | COLD<br />
!style="background: #efefef;" | WARM<br />
!style="background: #efefef;" | MIGR<br />
!style="background: #efefef;" | SPWN<br />
!style="background: #efefef;" | BIOL<br />
!style="background: #efefef;" | RARE<br />
!style="background: #efefef;" | EST<br />
!style="background: #efefef;" | FRESH<br />
!style="background: #efefef;" | COMM<br />
!style="background: #efefef;" | SHELL<br />
|-<br />
|'''Old Salinas River Estuary'''<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|-<br />
|'''Salinas River Lagoon (North)'''<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|-<br />
|'''Tembladero Slough'''<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|-<br />
|'''Espinosa Slough'''<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|-<br />
|'''Salinas Reclamation Canal'''<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|-<br />
|'''Alisal Creek'''<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|-<br />
|'''Blanco Drain'''<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|-<br />
|'''Salinas River, down stream of Spreckels Gage'''<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|-<br />
|'''Salinas River,Chualar to Spreckles'''<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|-<br />
|'''Quail Creek'''<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|}<br />
<br />
== Public Participation ==<br />
Due to the large number of stakeholders that are affected by the implementation of Lower Salinas River Watershed Nutrient TMDL, the Central Coast Water board had scheduled various public hearings and collaborative stakeholder meetings during different stages of the process. <br />
<br />
During the development of the Fecal Coliform TMDL report for the Lower Salinas River Watershed ([http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/lower_fecal/sal_fc_tmdl_att2_projrpt.pdf 2010 Report]), Water Board staff conducted stakeholder outreach efforts throughout the process. Water Board staff made several presentations to engage stakeholders and results were presented in newspapers and television media. In addition, a CEQA stakeholder scoping meeting was held in June of 2007 and another stakeholder meeting was held in August of 2009. A formal Central Coast Water Board public hearing was also held and public comments were solicited prior to the hearing. <br />
<br />
Stakeholders included: <br />
*The City of Salinas<br />
*[[CCRWQCB]] [http://www.swrcb.ca.gov/centralcoast/]<br />
*[[California Coastkeeper Alliance]] [http://www.cacoastkeeper.org/]<br />
*Central Coast Agricultural Task Force<br />
*[[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
*Commercial Ranches<br />
*Commercial Farms<br />
*[[Grower-Shipper Association|Grower-Shipper Association of Central California]] [http://www.growershipper.com/]<br />
*Monterey Bay National Marine Sanctuary<br />
*Monterey County Agricultural Commissioner’s Office<br />
*Monterey County Farm Bureau<br />
*Monterey County Cattlemen’s Association<br />
*Monterey County Department of Environmental Health<br />
*Monterey County Water Resources Agency<br />
*[[National Marine Fisheries Service|NMFS]] [http://www.nmfs.noaa.gov/]<br />
*Resource Conservation District of Monterey County<br />
*State of California Department of Health Services<br />
*United Fresh Fruit and Vegetable Association<br />
*United States Department of Agriculture<br />
*United States Food and Drug Administration<br />
<br />
== References ==<br />
<references/><br />
<br />
==See also==<br />
* [[Beneficial uses]]<br />
* [[Lower Salinas River Watershed]]<br />
* [[Monterey Bay Region]]<br />
<br />
* [[TMDL]]<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Lower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress]] <br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[TMDL for Chlorpyrifos and Diazinon in Lower Salinas River Watershed, Monterey County, California]]<br />
<br />
==External Links==<br />
* [http://www.ccamp.org/ Central Coast Ambient Monitoring Program] <br />
* [http://ccows.csumb.edu/home/ Central Coast Watershed Studies Team]<br />
* [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/303d_and_tmdl_projects.shtml Central Coast Regional Water Quality Control Board 303(d) Investigations and TMDL Projects]<br />
* [http://www.epa.gov/waterscience/criteria/nutrient/guidance/rivers/rivers-streams-full.pdf July 2000 EPA Nutrient Criteria Technical Guidance Manual for Rivers and Streams]<br />
* [http://rd.tetratech.com/epa/Documents/CA_NNE_July_Final.pdf Tetratech Final California Nutrient Numeric Endpoints (NNE) Report 2006 ]<br />
<br />
== Disclaimer ==<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-14T19:26:51Z<p>Kaitlync: /* Summary */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards, the [[EPA]] implemented a list of 303(d) listed waterbodies under [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] of the [[Clean Water Act]] (CWA). This list is assessed through [[Total Maximum Daily Load (TMDL)]] standards.<br />
<br />
The [[Lower Salinas River Watershed]](LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
Further information on the Lower Salinas TMDL Reports and specifics (not related to Implementation & Monitoring): [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
[[Image:NitrateMeas andSources.png|375px|thumb|right|Map of The Lower Salinas River Watershed nitrate measurements and possible sources (from [[CCRWQCB]] 2012 draft TMDL report)]]<br />
<br />
Proposed implementation actions (section 7.3.3 in 2013 nutrients TMDL) include compliance with the [[Central Coast Region Agricultural Waiver]] (Ag order--''Order No. R3-2012-0011'') with the overarching goals of:<br />
*"Control[ling] discharge of nutrients to [[impaired waterbodies]] and<br />
*"Implement[ing] management practices capable of achieving interim and final [[Load Allocations]] identified in [the latest (2012)] TMDL".<br />
<br />
Irrigated agriculture has been identified as the dominant [[Total_Mean_Daily_Load_%28TMDL%29#Source_analysis| source]] contributing to the issue of nutrients in the [[LSRW]]. Regulations can follow those set forth in the [[Conditional waiver of waste discharge requirements for irrigated lands | Ag Waiver]]. It is also advisable for Water Board staff to incorporate educational outreach programs to encourage the adoption of [[Best Management Practices]] (BMPs) on all croplands.<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-14T19:26:09Z<p>Kaitlync: /* Summary */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards, the [[EPA]] implemented a list of 303(d) listed waterbodies under [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] of the [[Clean Water Act]] (CWA). This list is assessed through [[Total Maximum Daily Load (TMDL)]] standards.<br />
<br />
The [[Lower Salinas River Watershed]](LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
Further information on the Lower Salinas TMDL Reports and specifics (not related to Implementation & Monitoring): [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
[[Image:NitrateMeas andSources.png|375px|thumb|right|Map of The Lower Salinas River Watershed nitrate measurements and possible sources (from [[CCRWQCB]] 2012 draft TMDL report)]]<br />
<br />
Proposed implementation actions (section 7.3.3 in 2013 nutrients TMDL) include compliance with the [[Central Coast Region Agricultural Waiver]] (Ag order--''Order No. R3-2012-0011'') with the overarching goals of:<br />
*"Control[ling] discharge of nutrients to [[impaired waterbodies]] and<br />
*"Implement[ing] management practices capable of achieving interim and final [[Load Allocations]] identified in [the latest (2012)] TMDL".<br />
<br />
Irrigated agriculture has been identified as the dominant [[Total_Mean_Daily_Load_%28TMDL%29#Source_analysis| source]] contributing to the issue of nutrients in the [[LSRW]]. Regulations can follow those set forth in the [[Conditional waiver of waste discharge requirements for irrigated lands | Ag Waiver]]. It is also advisable for Water Board staff to incorporate educational outreach programs to encourage the adoption of [[Best Management Practices]] (BMPs) on all croplands.<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/TMDL_for_Nutrients_in_Lower_Salinas_River_Watershed,_Monterey_County,_CaliforniaTMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California2016-04-14T19:22:00Z<p>Kaitlync: /* Monitoring */</p>
<hr />
<div>A [[Watershed Issues|watershed-related issue]] examined by the [http://sep.csumb.edu/wiki/index.php/ENVS_560/L_Watershed_Systems ENVS 560/L Watershed Systems] class at [http://csumb.edu CSUMB].<br />
<br />
==Summary==<br />
The [[Salinas River]] [[Lower Salinas River Watershed|Watershed]], which includes the Nacimiento River, San Antonio River, Estrella River, and Arroyo Seco River, encompasses approximately 4,600 square miles within the [[Monterey Bay Region]] of California. The Lower Salinas River Watershed (LSRW) supplies water for many cities on California's Central Coast, from San Luis Obispo to Salinas (with their intensively farmed, productive agricultural valleys). The river flows into one of the world's most diverse marine ecosystems (CITE), [[Monterey Bay National Marine Sanctuary (MBNMS)]] at [[Moss Landing Harbor]] carrying pollutants acquired as it flows. The [[Salinas River]] is designated by the California State Water Resources Control Board ([[SWRCB]]) as one of the most critical watersheds in California due to degrading habitats and [[nonpoint source]] pollution impacts on water quality. Anthropogenic sources of [[nutrient loading]] to the Salinas River are a particular concern, given the high amount of agricultural [[land use]] within the LSRW. <br />
<br />
[[Image:Lower Salinas River Watershed.png|375px|thumb|Map of the Lower Salinas River Watershed (by Alberola 2011)]]<br />
<br />
== Nutrient TMDLs in the Lower Salinas Watershed == <br />
<br />
The [[Total Maximum Daily Load]] (TMDL) for [[Nutrients]] in the LSRW is determined by the [http://www.swrcb.ca.gov Regional Water Quality Control Board] [http://www.swrcb.ca.gov/rwqcb3 Central Coast Region (CCRWQCB)]. The TMDL for nutrients for the LSRW has been in development for many years and a preliminary draft project report for the LSRW and the [[Moro Cojo Slough]] subwatershed was completed in 2012.<br />
<br />
==2010 TMDL Report == <br />
<br />
The CCRWQCB presented a [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nut_dataanalyrpt_061410.pdf progress report] in June 2010 that contains background information, provisional [[Nutrient target|nutrient targets]], and a compilation of water quality data for water bodies in the region. The 2010 progress report identifies potential [[Nutrient load|nutrient load]] sources. A draft source analysis portion of the TMDL project is available from the 2012 draft TMDL document<ref name="TMDLs nutrients LSRW 2012"/> ('''UPDATE'''). <br />
<br />
The 2010 [[303(d) list]] of Impaired Waterbodies is the current and active list for the California Central Coast. In 2010, the CCRWQCB presented an updated list in its 2010 Integrated Report, but this report has not yet been approved by the US EPA<ref name="US EPA-approved TMDLs 2012">SWRCB list of US EPA approved and effective TMDLs for California [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/status.shtml]</ref>.<br />
<br />
The TMDL [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nut_dataanalyrpt_061410.pdf progress report] did not address 'critical' environmental factors associated with nutrient loading in the LSRW, in which a slight increase in nutrients could lead to exceedance of water quality objectives. However, the progress report does specify some indicators that can impair the beneficial uses of the regional water bodies. <br />
<br />
Data analysis for the June 2010 California Regional Water Board Progress Report included:<br />
<br />
* A delineation of watershed boundaries <br />
* A list of subwatersheds<br />
* Stream classification, which revealed in general low gradient streams on the valley floor were perennial, and many headwater streams tended to be ephemeral<br />
* An assessment of groundwater as baseflow. For the TMDL project area baseflow index values for groundwater ranged from 38 to 26 percent <br />
* An assessment of mean groundwater nitrate concentrations for the project area. Values reported ranged from 0.1-10.0 mg/l to 100.1-200.0 mg/l of nitrate<br />
* An assessment of mean annual precipitation for the project area. For the project area values ranged between 11.1 inches to 33.5 inches on average annually<br />
* An analysis of land use and land cover. In the project area, land uses include approximately 34% farmland, 31% grazing land, 8% urban, and 26% undeveloped/forested/restricted<br />
<br />
==2012 TMDL Report ==<br />
The 2012 CCRWQCB project report draft of [[TMDLs in the Monterey Bay Region of California |TMDL]] for nutrients in the [[Lower Salinas River Watershed]] (LSRW) (Monterey County, CA)<ref name="TMDLs nutrients LSRW 2012">Link to Central Coast Water Quality Control Board's ''draft'' TMDLs for Nutrients in the Lower Salinas Watershed [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/nutrients/index.shtml]</ref> is titled: ''Total Maximum Daily Loads for Nitrogen Compounds and Orthophosphate ''for the'' Lower Salinas River and Reclamation Canal Basin, and the Moro Cojo Slough Subwatershed, Monterey County, California'' AND WAS COMPLETED/FILLED DATE. Nutrients are defined as biologically-accessible nitrogen compounds and orthophosphate loading into waterways of the LSRW. <br />
<br />
This draft report indicates a proposed geographic scope of around 405 acres in the [[Lower Salinas Valley]] of northern [[Monterey County]], focused on the two major drainages, the [[Reclamation Canal Drainage]] and the [[Lower Salinas River Drainage]] (pictured at right). The [[Moro Cojo Slough|Moro Cojo subwatershed]] is identified as a subwatershed in the report. <br />
<br />
The ultimate receiving body (drainage) of both waterways and tributaries is the [[Monterey Bay]] and the [[Monterey Bay National Marine Sanctuary]]. Pollutants addressed by the proposed 2012 TMDL draft are nitrate, un-ionized ammonia, and orthophosphate. Reductions in pollutants are expected to target [[303(d)]]-listed impairments from low dissolved oxygen (DO) and chlorophyll-''a'' within the project area. These impairments relate to the [[biostimulatory]] effects of nitrate and orthophosphate on freshwater systems.<br />
<br />
According to the draft TMDL report (2012): <br />
<blockquote><br />
"Discharges of nitrogen compounds and orthophosphate are occurring at levels in surface waters which are impairing a wide spectrum of beneficial uses and, therefore, constitute a serious water quality problem. The municipal and domestic drinking water supply (MUN, GWR) beneficial uses and the range of aquatic habitat beneficial uses are currently impaired; potential or future beneficial uses of the agricultural irrigation water supply (AGR) for sensitive crops may be impaired. A total of 34 waterbody/pollutant combinations are impaired due to exceedances of water quality objectives. The pollutants addressed in this TMDL are nitrate, un-ionized ammonia, and orthophosphate. Orthophosphate is included as a pollutant due to biostimulatory impairments of surface waters. Reducing these pollutants is also anticipated to address several 303(d)-listed dissolved oxygen and chlorophyll a impairments in the TMDL project area. As a result of these conditions, beneficial uses are not being protected." <br />
''and'' <br />
<br><br />
"By developing TMDLs for the aforementioned pollutants, the water quality standards violations being addressed in this TMDL include:<br />
* Violations of drinking water standard for nitrate<br />
* Violations of the Basin Plan general toxicity objective for inland surface waters and estuaries (violations of un-ionized ammonia objective)<br />
* Violations of the Basin Plan narrative general objective for biostimulatory substances in inland surface waters and estuaries (as expressed by excessive nutrients, chlorophyll a, algal biomass, and low dissolved oxygen)"<br />
</blockquote><br />
<br><br />
According to the CCWRQCB draft TMDL nutrient report (2012): <br />
<blockquote>"''There does not appear to be a significant geologic reservoir in the project area that could contribute to elevated nitrogen loads to surface waters.''"<br />
</blockquote><br />
<br />
[[Eutrophication]] of waterways may occur when excess nutrients are present and environmental conditions promote algal growth. Biologically-accessible nitrogen and phosphorus are ''limiting nutrients'' in many ecosystems (CITE). In general, sources of nutrients in watersheds include: urban runoff, fertilizers, groundwater, livestock, wastewater treatment plants, and septic systems. Specifically for the Lower Salinas River Watershed (Anderson et al. 2003) <ref name="Anderson et al. 2003"> [http://ccows.csumb.edu/pubs/reports/CCoWS_NutrientSources_030529b_ta.pdf Anderson T, Watson F, Newman W, Hager J, Kozlowski D, Casagrande J, Larson J. 2003. Nutrients in surface waters of the southern Monterey Bay watersheds. Central Coast Watershed Studies]</ref> identified [[irrigated agriculture]] as the dominant source of nutrients in watersheds in the region.<br />
<br />
According to the [[SWRCB]]-contracted UC Davis report<ref name="Nitrate report: Senate Bill X2 1 report">UC Davis contract study report on the Tulare Valley and Lower Salinas Watershed addressing nitrates in the California's drinking water [http://groundwaternitrate.ucdavis.edu/files/138956.pdf]</ref> (Harter and Lund 2012) on nitrate in California's Drinking Water for the [[State Water Resources Control Board]] (SWRCB), nitrates are reducing quality of drinking water from shallow wells. The report concludes that: "Most nitrate in drinking water wells today was applied to the surface decades ago." <br />
<br />
The report is part of a contracted study for the SWRCB as part of the Senate-mandated ''Groundwater Nitrate Project'' as part of biannual reporting on initial studies into nitrate effects on drinking water in the Tulare Basin and Salinas Valley. The report also cites agriculture as the estimated source of 96% of nitrate loading to groundwater--200 Gg/yr (1 Gg = 1100 tons) within these regions, with the next largest (estimated) source (wastewater treatment and food processing wastes) loading 3.2 Gg nitrate/yr to groundwater.<br />
<br />
[[Image:Majordrain TMDL projarea.png|325px|thumb|right|Map of major drainages in the nutrient TMDL draft (2012) for the [[Lower Salinas River Watershed]]<ref name="TMDLs nutrients LSRW 2012"/>.]]<br />
<br />
[[Image:TMDL Impairment Map.png|275px|thumb|right|Latest map of impaired ([[303(d) list]]ed) waterways of the Lower Salinas River Watershed) (2010)]]<br />
<br />
== Nutrient Pollutants in the Lower Salinas Watershed == <br />
<br />
Nutrient pollutants are of concern because of direct and indirect effects on freshwater aquatic habitats and groundwater stores.<br />
<br />
Information on the implementation and monitoring can be found here: [[Lower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress]]. <br />
<br />
The [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nut_dataanalyrpt_061410.pdf June 2010 California Regional Water Board Nutrient TMDL Progress Report] acknowledges that the presence of excess nutrients does not directly impair waterways, rather, indirect impacts ''associated'' with the presence of excess nutrients diminish beneficial uses of waterways. <br />
<br />
Secondary indicators of eutrophication ("biostimulation") such as nuisance algal blooms, drastic diel swings in dissolved oxygen concentrations, and loss of habitat must also be monitored and documented as they are more directly linked to the beneficial uses of waterways than nutrient concentrations alone.<br />
<br />
=== Numeric Targets ===<br />
The [[CCRWQCB]] issued a [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf TMDL concise tabular summary] in 2013. The summary clearly identifies numeric targets for Nitrate as N, orthophosphate as P, and un-ionized ammonia as N during the Dry season, Wet season and Year round. The numeric targets are as follows:<br />
<br />
'''Dry Season (May 1 - Oct 31):'''<br />
Nitrate as N: must not exceed 1.4 to 6.4 mg/L in impaired receiving waters, depending on specific stream reach.<br />
Orthophosphate as P: must not exceed 0.7 to 0.13 mg/L in impaired recieving waters, depending on specific stream reach.<br />
<br />
'''Wet Season (Nov 1 - Apr 30):'''<br />
Nitrate as N: must not exceed 8 mg/L in impaired receiving waters, depending on specific stream reach.<br />
Orthophosphate as P: must not exceed 0.3 mg/L in impaired recieving waters, depending on specific stream reach.<br />
<br />
'''Year Round:'''<br />
Nitrate as N: must not exceed 10 mg/L in all recieving water designated MUN<br />
Un-ionized ammonia as N: must not exceed 0.025 mg/L in all receiving waters<br />
<br />
The [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nut_dataanalyrpt_061410.pdf progress report] described that one uniform nutrient target may not be sufficient in light of the large variability of stream morphology and hydraulics in the waterbodies contributing to the Lower Salinas River. The report explored a variety of ways to define a range of numeric targets. Final nutrient targets can be developed based on either calculations or estimations. The percentile based approach calculates the numeric target by using either the 25th percentile of nutrient data from reference streams or the 75th percentile of all nutrient data for the project area streams. The [[nutrient numeric endpoints]] (NNE) approach estimates in-stream benthic algal response to ambient stream conditions. <br />
<br />
Based on these approaches, the provisional and preliminary numeric targets for total nitrogen listed in the [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nut_dataanalyrpt_061410.pdf progress report] range from 1.4-2.2 mg/L depending on waterbody type. <br />
<br />
[[Image:Biostim 2 TMDL2012.png|275px|thumb|right|Photographic documentation of waterways with high eutrophication (biostimulation) in the Lower Salinas River Watershed (from 2012 TMDL draft report)]]<br />
<br />
=== Source Analysis ===<br />
A draft [[source analysis]] for nutrients in the Lower Salinas River watershed has not been completed as of March 2016. The report uses STEPL (Spreadsheet Tool for Estimating Pollutant Load) to calculate nutrient loads (nitrogen and phosphorus--N and P) from various characteristics including watershed area, and nutrient loads (based on land use and land cover--[[LULC]]). These estimates are made at the project-area scale (405 acres), and can be recalculated for individual subwatersheds. The report cites a 1999 US EPA report and states, "''both nitrogen and phosphorus reach surface waters at an elevated rate as a result of human activities''."<br />
<br />
This analysis reports estimates for urban annual N Load (lb/yr) and P Load (lb/yr) at 138,391 and 21,796 respectively. <br />
<br />
Cropland estimates of N and P loading at 2,211,230 and 629,492 lbs/year by far made up the greatest proportion of source loads identified in the project area. Total N and P loading (lbs/year) were 2,911,676 and 793,236 respectively. This means that agriculture represents 76% of N and 79% of P loading in the area. <br />
<br />
Grazing (209,521; 123,412) and forest (27,649; 11,327) also make contributions as well. <br />
<br />
Because shallow groundwater acts as a reservoir for elevated concentrations of nitrogen and phosphorus in the region<ref name="Nitrate report: Senate Bill X2 1 report"/>, their contribution to baseflow in streams becomes a prominent source of surface water nutrients in the dry (summer) season. These groundwater to surface water nutrient additions amount to 323,957 and 6,985 lbs/year nitrogen and phosphorus loading, respectively. Citing the Tetratech (2003) reporting (CITE), the draft TMDL report (2012) notes: <blockquote> "''...groundwater loads appear to be overwhelmingly due to human influences on groundwater in the project area.''" </blockquote><br />
<br />
Atmospheric deposition made up a less proportionate impact on N and P loading, however, it may have a disproportionate impact in terms of nutrient loading on lakes and reservoirs due to their high surface area. Atmospheric deposition annual load (lbs./year) were 899 and 211, respectively.<br />
<br />
There is a [http://ccows.csumb.edu/pubs/reports/CCoWS_NutrientSources_030529b_ta.pdf preliminary source analysis] prepared by Anderson, et al. (2003) that identified [[irrigated agriculture]] as a dominant source for high nutrient concentrations in southern Monterey Bay watersheds. The report notes that the source assignment is strongly ''qualitatively'' suggested "through "overwhelming" correlation of nutrient concentration data and land use."<br />
<br />
A study by the Lawrence Livermore National Laboratory (CITE Moran et al. 2011) demonstrated concurrent results, based of geochemical and isotopic signatures pointing to irrigated agriculture as the largest source of nitrate to surface and groundwater in areas sampled of the Salinas Valley. Specifically, isotopic signatures of oxygen matched inorganic fertilizers, and ''not'' those ranges expected from animal waste. The 2012 TMDL draft report acknowledges limitations in the geographic scope of the 2011 LLNL study in not being extrapolated to areas of the LSRW, while pointing out the utility of the study in backing, " ...the mass balance-based source analysis developed in this TMDL project report." Importantly, this study contrasts with Harter-Lund contract report for the SWRCB (2012) which states that the nitrate found in shallow groundwater comes from nutrient applications from decades ago (dairy waste or animal manure application).<br />
<br />
<br />
=== Monitoring ===<br />
<br />
The [[Environmental Protection Agency]] Nutrient TMDL development protocol document (2000) <ref name= "EPA doc" >[http://www.epa.gov/owow/tmdl/nutrient/pdf/nutrient.pdf]</ref> suggested steps include: <br />
<br />
*identifying key questions <br />
*evaluating monitoring options ''and'' <br />
*implementing the monitoring program. <br />
<br><br />
<br />
Irrigated agriculture has been identified as the dominant nutrient source contribution to the Lower Salinas River Watershed. As such, the monitoring plan for the LSRW necessarily focuses on quantifying agricultural nutrient [[source analysis]]. Monitoring may be informed by requirements outlined in the [[Conditional waiver of waste discharge requirements for irrigated lands | Ag Waiver]] evaluating results to ensure that agricultural [[best management practices]] (BMPs) are adequate to reduce nutrient levels.<br />
<br />
Urban stormwater runoff is another important source of nutrients in the LSRW. As the City of Salinas has already implemented a [http://www.ci.salinas.ca.us/services/maintenance/pdf/SalinasSMP_QAPP.pdf Storm Water Monitoring Program] water board staff should evaluate their results to ensure the Storm Water Management Program is effective at reducing nutrient effluent and has implemented [[Best Management Practices]].<br />
<br />
The [[MOS]] for the Lower Salinas River Watershed is dependent on the assumptions put into the INN benthic biomass modeler. <br />
<br />
In establishing TMDL allocations in the Lower Salinas River Watershed for nutrients, the Regional Water Quality Control Board could approach the allocations in a similar fashion as that taken in the Pajaro River Nitrate TMDL. By setting the [[load allocation]]s as a concentration at or below the [[numeric target]] for all sources, future growth and changes in land use will not lead to an exceedance of the TMDL. This will also eliminate the need for setting critical conditions based on changes in flow rate, which would absolutely be required if allocations were set as loads given in mass.<br />
<br />
The following table details impaired water bodies within the Salinas Watershed, and the justification for nutrient-related listing in the 2006, 2010, and 2012 impairment list. The list comprises 20 listed waterbodies with a combined six sources of impairment. <br />
<br>(No data reported past March 2010)<br />
<br />
{|border="2"<br />
!style="background: #efefef;" | Water Body<br />
!style="background: #efefef;" | 2006 Listed Impairment<br />
!style="background: #efefef;" | 2010 Listed Impairment<br />
!style="background: #efefef;" | 2012 Listed Impairment<br />
<br />
|-<br />
| Alisal Creek<br />
| Nutrient<br />
| Chlorophyll-a, Nitrate<br />
| Ammonia (Un-ionized), Chlorophyll-a<br />
|-<br />
| Alisal Slough <br />
| Not Listed<br />
| Low Dissolved Oxygen, Nitrate<br />
| Low Dissolved Oxygen, Nitrate (biostimulatory*) <br />
|-<br />
| [[Blanco Drain]]<br />
| Not Listed<br />
| Low Dissolved Oxygen, Nitrate<br />
| Low Dissolved Oxygen, Nitrate (biostimulatory) <br />
|-<br />
| Chualar Creek<br />
| Not Listed<br />
| Ammonia (Un-ionized), Nitrate<br />
| Nitrate (drinking water)<br />
|-<br />
| Esperanza Creek<br />
| Not Listed<br />
| Nitrate<br />
| Nitrate (drinking water), (NO DATA on un-ionized ammonia)<br />
|-<br />
| Espinosa Slough<br />
| Not Listed<br />
| Ammonia (Un-ionized), Nitrate<br />
| Ammonia (Un-ionized), Nitrate (drinking water)<br />
|-<br />
| Gabilan Creek<br />
| Nitrate<br />
| Ammonia (Un-ionized), Nitrate<br />
| Nitrate (drinking water)<br />
|-<br />
| Lower Reclamation Canal<br />
| N/A<br />
| N/A<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate (biostimulatory)<br />
|-<br />
| Lower Salinas River <br />
| N/A<br />
| N/A<br />
| Nitrate (biostimulatory)<br />
|-<br />
| Merrit Ditch<br />
| Not Listed<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate (biostimulatory)<br />
|-<br />
| [[Moro Cojo Slough]]<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen<br />
|-<br />
| Natividad Creek<br />
| Nitrate<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate (biostimulatory)<br />
|-<br />
| Old Salinas River<br />
| Not Listed<br />
| Chlorophyll-a, Low Dissolved Oxygen, Nitrate<br />
| Chlorophyll-a, Low Dissolved Oxygen, Nitrate (biostimulatory)<br />
|-<br />
| Old Salinas River Estuary<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nutrients<br />
| Nutrients<br />
| N/A (not in 2012 report?)<br />
|-<br />
| Quail Creek<br />
| Nutrients<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate<br />
| Ammonia (Un-ionized), Nitrate (drinking water)<br />
|-<br />
| Salinas Reclamation Canal<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate (biostimulatory)<br />
|-<br />
| Salinas River (lower, estuary near Gonzales Rd. Crossing)<br />
| Nitrate, Nutrients<br />
| Nitrate<br />
| Nitrate (biostimulatory)<br />
|-<br />
| Salinas River Lagoon (North)<br />
| Nutrients<br />
| Nutrients<br />
| N/A (not in 2012 report?)<br />
|-<br />
| Santa Rita Creek <br />
| Nitrate <br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate (drinking water)<br />
|-<br />
| [[Tembladero Slough]]<br />
| Ammonia (Un-ionized), Nutrients**<br />
| Chlorophyll-a, Nitrate, Nutrients**<br />
| Chlorophyll-a, Nitrate (biostimulatory), Nutrients<br />
|-<br />
|}<br />
*Nitrate is divided into [[biostimulatory]] impairment concentrations and drinking water impairment concentrations of 1.7-6.4 and 10 mg/L respectively.<br />
**Nutrient impairment refers to the biostimulatory effects of orthophosphate on [[algal bloom]] impairment.<br />
<br />
== Nitrate example ==<br />
[[Image:Nitrate Map 2012TMDLDraftReport.png|350px|right|thumb|Surface nitrate concentrations and estimated source contributions in the [[LSRW]].]]<br />
<br />
The project report completed in March 2013 by the California Regional Water Quality Control Board, (CRWQCB) Central Coast Region ([[CCRWQCB]]) on TMDLs for nutrients in the Lower Salinas River Watershed<ref name="TMDLreport"> [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf LSRW Nutrient TMDL Staff Report]</ref> Link to Waterboard TMDLs for Nutrients in the Lower Salinas Watershed [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/nutrients/index.shtml]</ref>.<br />
<br />
In this document, the work group identifies multiple [[Beneficial uses (Clean Water Act)|beneficial uses]] (BUs) as impaired, including those for drinking water supply, livestock watering, and aquatic habitat BUs.<br />
<br />
From the 2013 project report<ref name="TMDLreport"/>: <br />
<blockquote><br />
"''Problem Statement'':<br />
''"Discharges of nitrogen compounds and orthophosphate are occurring at levels in surface waters<br />
which are impairing a wide spectrum of beneficial uses and, therefore, constitute a serious <br />
water quality problem. The municipal and domestic drinking water supply (MUN, GWR) <br />
beneficial uses and the range of aquatic habitat beneficial uses are currently impaired; potential <br />
or future beneficial uses of the agricultural irrigation water supply (AGR) for sensitive crops may <br />
be impaired..." <br /><br />"A total of 34 <br />
waterbody/pollutant combinations are impaired due to exceedances of water quality objectives. <br />
The pollutants addressed in this TMDL are nitrate, un-ionized ammonia, and orthophosphate –<br />
orthophosphate is included as a pollutant due to biostimulatory impairments of surface waters. <br />
Reducing these pollutants is also anticipated to address several 303(d)-listed dissolved oxygen <br />
and chlorophyll a impairments in the TMDL project area."''<br />
</blockquote><br />
<br />
== Beneficial Uses (BUs) Associated with Waterways Listed for Nutrient Impairments ==<br />
<br />
[[Beneficial uses]] of waterways and water quality objectives are vital to determining water quality standards and goals. Below is a list of BUs, and a table showing identified BUs for water bodies within the Salinas watershed.<br />
<br />
* Municipal and Domestic supply (MUN)<br />
* Agriculture (AGR)<br />
* Industrial Process (PRO)<br />
* Industrial Service (IND)<br />
* Ground Water Recharge (GWR)<br />
* Water Contact Recreation (REC1)<br />
* Non-Contact Water Recreation (REC2)<br />
* Cold Freshwater Habitat (COLD)<br />
* Warm Freshwater Habitat (WARM)<br />
* Estuarine Habitat (EST)<br />
* Wildlife Habitat (WILD)<br />
* Rare, Threatened, or Endangered Species (RARE)<br />
* Migration of Aquatic Organisms (MIGR)<br />
* Spawning, Reproduction, and/or Early Development (SPWN)<br />
* Biological Habitats of Special Significance (BIOL)<br />
* Shellfish Harvesting (SHELL)<br />
* Commercial and Sport Fishing (COMM)<br />
* Freshwater replenishment (FRESH)<br />
<br />
{| border="3"<br />
!style="background: #efefef;" | Waterbody<br />
!style="background: #efefef;" | MUN<br />
!style="background: #efefef;" | AGR<br />
!style="background: #efefef;" | PRO<br />
!style="background: #efefef;" | IND<br />
!style="background: #efefef;" | GWR<br />
!style="background: #efefef;" | REC1<br />
!style="background: #efefef;" | REC2<br />
!style="background: #efefef;" | WILD<br />
!style="background: #efefef;" | COLD<br />
!style="background: #efefef;" | WARM<br />
!style="background: #efefef;" | MIGR<br />
!style="background: #efefef;" | SPWN<br />
!style="background: #efefef;" | BIOL<br />
!style="background: #efefef;" | RARE<br />
!style="background: #efefef;" | EST<br />
!style="background: #efefef;" | FRESH<br />
!style="background: #efefef;" | COMM<br />
!style="background: #efefef;" | SHELL<br />
|-<br />
|'''Old Salinas River Estuary'''<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|-<br />
|'''Salinas River Lagoon (North)'''<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|-<br />
|'''Tembladero Slough'''<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|-<br />
|'''Espinosa Slough'''<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|-<br />
|'''Salinas Reclamation Canal'''<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|-<br />
|'''Alisal Creek'''<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|-<br />
|'''Blanco Drain'''<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|-<br />
|'''Salinas River, down stream of Spreckels Gage'''<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|-<br />
|'''Salinas River,Chualar to Spreckles'''<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|-<br />
|'''Quail Creek'''<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|}<br />
<br />
== Public Participation ==<br />
Due to the large number of stakeholders that are affected by the implementation of Lower Salinas River Watershed Nutrient TMDL, the Central Coast Water board had scheduled various public hearings and collaborative stakeholder meetings during different stages of the process. <br />
<br />
During the development of the Fecal Coliform TMDL report for the Lower Salinas River Watershed ([http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/lower_fecal/sal_fc_tmdl_att2_projrpt.pdf 2010 Report]), Water Board staff conducted stakeholder outreach efforts throughout the process. Water Board staff made several presentations to engage stakeholders and results were presented in newspapers and television media. In addition, a CEQA stakeholder scoping meeting was held in June of 2007 and another stakeholder meeting was held in August of 2009. A formal Central Coast Water Board public hearing was also held and public comments were solicited prior to the hearing. <br />
<br />
Stakeholders included: <br />
*The City of Salinas<br />
*[[CCRWQCB]] [http://www.swrcb.ca.gov/centralcoast/]<br />
*[[California Coastkeeper Alliance]] [http://www.cacoastkeeper.org/]<br />
*Central Coast Agricultural Task Force<br />
*[[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
*Commercial Ranches<br />
*Commercial Farms<br />
*[[Grower-Shipper Association|Grower-Shipper Association of Central California]] [http://www.growershipper.com/]<br />
*Monterey Bay National Marine Sanctuary<br />
*Monterey County Agricultural Commissioner’s Office<br />
*Monterey County Farm Bureau<br />
*Monterey County Cattlemen’s Association<br />
*Monterey County Department of Environmental Health<br />
*Monterey County Water Resources Agency<br />
*[[National Marine Fisheries Service|NMFS]] [http://www.nmfs.noaa.gov/]<br />
*Resource Conservation District of Monterey County<br />
*State of California Department of Health Services<br />
*United Fresh Fruit and Vegetable Association<br />
*United States Department of Agriculture<br />
*United States Food and Drug Administration<br />
<br />
== References ==<br />
<references/><br />
<br />
==See also==<br />
* [[Beneficial uses]]<br />
* [[Lower Salinas River Watershed]]<br />
* [[Monterey Bay Region]]<br />
<br />
* [[TMDL]]<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Lower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress]] <br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[TMDL for Chlorpyrifos and Diazinon in Lower Salinas River Watershed, Monterey County, California]]<br />
<br />
==External Links==<br />
* [http://www.ccamp.org/ Central Coast Ambient Monitoring Program] <br />
* [http://ccows.csumb.edu/home/ Central Coast Watershed Studies Team]<br />
* [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/303d_and_tmdl_projects.shtml Central Coast Regional Water Quality Control Board 303(d) Investigations and TMDL Projects]<br />
* [http://www.epa.gov/waterscience/criteria/nutrient/guidance/rivers/rivers-streams-full.pdf July 2000 EPA Nutrient Criteria Technical Guidance Manual for Rivers and Streams]<br />
* [http://rd.tetratech.com/epa/Documents/CA_NNE_July_Final.pdf Tetratech Final California Nutrient Numeric Endpoints (NNE) Report 2006 ]<br />
<br />
== Disclaimer ==<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-14T19:15:30Z<p>Kaitlync: /* Action Taken since TMDL Approval */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards, the [[EPA]] implemented a list of 303(d) listed waterbodies under [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] of the [[Clean Water Act]] (CWA). This list is assessed through [[Total Maximum Daily Load (TMDL)]] standards.<br />
<br />
The [[Lower Salinas River Watershed]](LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
[[Image:NitrateMeas andSources.png|375px|thumb|right|Map of The Lower Salinas River Watershed nitrate measurements and possible sources (from [[CCRWQCB]] 2012 draft TMDL report)]]<br />
<br />
Proposed implementation actions (section 7.3.3 in 2013 nutrients TMDL) include compliance with the [[Central Coast Region Agricultural Waiver]] (Ag order--''Order No. R3-2012-0011'') with the overarching goals of:<br />
*"Control[ling] discharge of nutrients to [[impaired waterbodies]] and<br />
*"Implement[ing] management practices capable of achieving interim and final [[Load Allocations]] identified in [the latest (2012)] TMDL".<br />
<br />
Irrigated agriculture has been identified as the dominant [[Total_Mean_Daily_Load_%28TMDL%29#Source_analysis| source]] contributing to the issue of nutrients in the [[LSRW]]. Regulations can follow those set forth in the [[Conditional waiver of waste discharge requirements for irrigated lands | Ag Waiver]]. It is also advisable for Water Board staff to incorporate educational outreach programs to encourage the adoption of [[Best Management Practices]] (BMPs) on all croplands.<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/TMDL_for_Nutrients_in_Lower_Salinas_River_Watershed,_Monterey_County,_CaliforniaTMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California2016-04-14T19:15:27Z<p>Kaitlync: /* Nutrient Pollutants in the Lower Salinas Watershed */</p>
<hr />
<div>A [[Watershed Issues|watershed-related issue]] examined by the [http://sep.csumb.edu/wiki/index.php/ENVS_560/L_Watershed_Systems ENVS 560/L Watershed Systems] class at [http://csumb.edu CSUMB].<br />
<br />
==Summary==<br />
The [[Salinas River]] [[Lower Salinas River Watershed|Watershed]], which includes the Nacimiento River, San Antonio River, Estrella River, and Arroyo Seco River, encompasses approximately 4,600 square miles within the [[Monterey Bay Region]] of California. The Lower Salinas River Watershed (LSRW) supplies water for many cities on California's Central Coast, from San Luis Obispo to Salinas (with their intensively farmed, productive agricultural valleys). The river flows into one of the world's most diverse marine ecosystems (CITE), [[Monterey Bay National Marine Sanctuary (MBNMS)]] at [[Moss Landing Harbor]] carrying pollutants acquired as it flows. The [[Salinas River]] is designated by the California State Water Resources Control Board ([[SWRCB]]) as one of the most critical watersheds in California due to degrading habitats and [[nonpoint source]] pollution impacts on water quality. Anthropogenic sources of [[nutrient loading]] to the Salinas River are a particular concern, given the high amount of agricultural [[land use]] within the LSRW. <br />
<br />
[[Image:Lower Salinas River Watershed.png|375px|thumb|Map of the Lower Salinas River Watershed (by Alberola 2011)]]<br />
<br />
== Nutrient TMDLs in the Lower Salinas Watershed == <br />
<br />
The [[Total Maximum Daily Load]] (TMDL) for [[Nutrients]] in the LSRW is determined by the [http://www.swrcb.ca.gov Regional Water Quality Control Board] [http://www.swrcb.ca.gov/rwqcb3 Central Coast Region (CCRWQCB)]. The TMDL for nutrients for the LSRW has been in development for many years and a preliminary draft project report for the LSRW and the [[Moro Cojo Slough]] subwatershed was completed in 2012.<br />
<br />
==2010 TMDL Report == <br />
<br />
The CCRWQCB presented a [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nut_dataanalyrpt_061410.pdf progress report] in June 2010 that contains background information, provisional [[Nutrient target|nutrient targets]], and a compilation of water quality data for water bodies in the region. The 2010 progress report identifies potential [[Nutrient load|nutrient load]] sources. A draft source analysis portion of the TMDL project is available from the 2012 draft TMDL document<ref name="TMDLs nutrients LSRW 2012"/> ('''UPDATE'''). <br />
<br />
The 2010 [[303(d) list]] of Impaired Waterbodies is the current and active list for the California Central Coast. In 2010, the CCRWQCB presented an updated list in its 2010 Integrated Report, but this report has not yet been approved by the US EPA<ref name="US EPA-approved TMDLs 2012">SWRCB list of US EPA approved and effective TMDLs for California [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/status.shtml]</ref>.<br />
<br />
The TMDL [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nut_dataanalyrpt_061410.pdf progress report] did not address 'critical' environmental factors associated with nutrient loading in the LSRW, in which a slight increase in nutrients could lead to exceedance of water quality objectives. However, the progress report does specify some indicators that can impair the beneficial uses of the regional water bodies. <br />
<br />
Data analysis for the June 2010 California Regional Water Board Progress Report included:<br />
<br />
* A delineation of watershed boundaries <br />
* A list of subwatersheds<br />
* Stream classification, which revealed in general low gradient streams on the valley floor were perennial, and many headwater streams tended to be ephemeral<br />
* An assessment of groundwater as baseflow. For the TMDL project area baseflow index values for groundwater ranged from 38 to 26 percent <br />
* An assessment of mean groundwater nitrate concentrations for the project area. Values reported ranged from 0.1-10.0 mg/l to 100.1-200.0 mg/l of nitrate<br />
* An assessment of mean annual precipitation for the project area. For the project area values ranged between 11.1 inches to 33.5 inches on average annually<br />
* An analysis of land use and land cover. In the project area, land uses include approximately 34% farmland, 31% grazing land, 8% urban, and 26% undeveloped/forested/restricted<br />
<br />
==2012 TMDL Report ==<br />
The 2012 CCRWQCB project report draft of [[TMDLs in the Monterey Bay Region of California |TMDL]] for nutrients in the [[Lower Salinas River Watershed]] (LSRW) (Monterey County, CA)<ref name="TMDLs nutrients LSRW 2012">Link to Central Coast Water Quality Control Board's ''draft'' TMDLs for Nutrients in the Lower Salinas Watershed [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/nutrients/index.shtml]</ref> is titled: ''Total Maximum Daily Loads for Nitrogen Compounds and Orthophosphate ''for the'' Lower Salinas River and Reclamation Canal Basin, and the Moro Cojo Slough Subwatershed, Monterey County, California'' AND WAS COMPLETED/FILLED DATE. Nutrients are defined as biologically-accessible nitrogen compounds and orthophosphate loading into waterways of the LSRW. <br />
<br />
This draft report indicates a proposed geographic scope of around 405 acres in the [[Lower Salinas Valley]] of northern [[Monterey County]], focused on the two major drainages, the [[Reclamation Canal Drainage]] and the [[Lower Salinas River Drainage]] (pictured at right). The [[Moro Cojo Slough|Moro Cojo subwatershed]] is identified as a subwatershed in the report. <br />
<br />
The ultimate receiving body (drainage) of both waterways and tributaries is the [[Monterey Bay]] and the [[Monterey Bay National Marine Sanctuary]]. Pollutants addressed by the proposed 2012 TMDL draft are nitrate, un-ionized ammonia, and orthophosphate. Reductions in pollutants are expected to target [[303(d)]]-listed impairments from low dissolved oxygen (DO) and chlorophyll-''a'' within the project area. These impairments relate to the [[biostimulatory]] effects of nitrate and orthophosphate on freshwater systems.<br />
<br />
According to the draft TMDL report (2012): <br />
<blockquote><br />
"Discharges of nitrogen compounds and orthophosphate are occurring at levels in surface waters which are impairing a wide spectrum of beneficial uses and, therefore, constitute a serious water quality problem. The municipal and domestic drinking water supply (MUN, GWR) beneficial uses and the range of aquatic habitat beneficial uses are currently impaired; potential or future beneficial uses of the agricultural irrigation water supply (AGR) for sensitive crops may be impaired. A total of 34 waterbody/pollutant combinations are impaired due to exceedances of water quality objectives. The pollutants addressed in this TMDL are nitrate, un-ionized ammonia, and orthophosphate. Orthophosphate is included as a pollutant due to biostimulatory impairments of surface waters. Reducing these pollutants is also anticipated to address several 303(d)-listed dissolved oxygen and chlorophyll a impairments in the TMDL project area. As a result of these conditions, beneficial uses are not being protected." <br />
''and'' <br />
<br><br />
"By developing TMDLs for the aforementioned pollutants, the water quality standards violations being addressed in this TMDL include:<br />
* Violations of drinking water standard for nitrate<br />
* Violations of the Basin Plan general toxicity objective for inland surface waters and estuaries (violations of un-ionized ammonia objective)<br />
* Violations of the Basin Plan narrative general objective for biostimulatory substances in inland surface waters and estuaries (as expressed by excessive nutrients, chlorophyll a, algal biomass, and low dissolved oxygen)"<br />
</blockquote><br />
<br><br />
According to the CCWRQCB draft TMDL nutrient report (2012): <br />
<blockquote>"''There does not appear to be a significant geologic reservoir in the project area that could contribute to elevated nitrogen loads to surface waters.''"<br />
</blockquote><br />
<br />
[[Eutrophication]] of waterways may occur when excess nutrients are present and environmental conditions promote algal growth. Biologically-accessible nitrogen and phosphorus are ''limiting nutrients'' in many ecosystems (CITE). In general, sources of nutrients in watersheds include: urban runoff, fertilizers, groundwater, livestock, wastewater treatment plants, and septic systems. Specifically for the Lower Salinas River Watershed (Anderson et al. 2003) <ref name="Anderson et al. 2003"> [http://ccows.csumb.edu/pubs/reports/CCoWS_NutrientSources_030529b_ta.pdf Anderson T, Watson F, Newman W, Hager J, Kozlowski D, Casagrande J, Larson J. 2003. Nutrients in surface waters of the southern Monterey Bay watersheds. Central Coast Watershed Studies]</ref> identified [[irrigated agriculture]] as the dominant source of nutrients in watersheds in the region.<br />
<br />
According to the [[SWRCB]]-contracted UC Davis report<ref name="Nitrate report: Senate Bill X2 1 report">UC Davis contract study report on the Tulare Valley and Lower Salinas Watershed addressing nitrates in the California's drinking water [http://groundwaternitrate.ucdavis.edu/files/138956.pdf]</ref> (Harter and Lund 2012) on nitrate in California's Drinking Water for the [[State Water Resources Control Board]] (SWRCB), nitrates are reducing quality of drinking water from shallow wells. The report concludes that: "Most nitrate in drinking water wells today was applied to the surface decades ago." <br />
<br />
The report is part of a contracted study for the SWRCB as part of the Senate-mandated ''Groundwater Nitrate Project'' as part of biannual reporting on initial studies into nitrate effects on drinking water in the Tulare Basin and Salinas Valley. The report also cites agriculture as the estimated source of 96% of nitrate loading to groundwater--200 Gg/yr (1 Gg = 1100 tons) within these regions, with the next largest (estimated) source (wastewater treatment and food processing wastes) loading 3.2 Gg nitrate/yr to groundwater.<br />
<br />
[[Image:Majordrain TMDL projarea.png|325px|thumb|right|Map of major drainages in the nutrient TMDL draft (2012) for the [[Lower Salinas River Watershed]]<ref name="TMDLs nutrients LSRW 2012"/>.]]<br />
<br />
[[Image:TMDL Impairment Map.png|275px|thumb|right|Latest map of impaired ([[303(d) list]]ed) waterways of the Lower Salinas River Watershed) (2010)]]<br />
<br />
== Nutrient Pollutants in the Lower Salinas Watershed == <br />
<br />
Nutrient pollutants are of concern because of direct and indirect effects on freshwater aquatic habitats and groundwater stores.<br />
<br />
Information on the implementation and monitoring can be found here: [[Lower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress]]. <br />
<br />
The [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nut_dataanalyrpt_061410.pdf June 2010 California Regional Water Board Nutrient TMDL Progress Report] acknowledges that the presence of excess nutrients does not directly impair waterways, rather, indirect impacts ''associated'' with the presence of excess nutrients diminish beneficial uses of waterways. <br />
<br />
Secondary indicators of eutrophication ("biostimulation") such as nuisance algal blooms, drastic diel swings in dissolved oxygen concentrations, and loss of habitat must also be monitored and documented as they are more directly linked to the beneficial uses of waterways than nutrient concentrations alone.<br />
<br />
=== Numeric Targets ===<br />
The [[CCRWQCB]] issued a [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf TMDL concise tabular summary] in 2013. The summary clearly identifies numeric targets for Nitrate as N, orthophosphate as P, and un-ionized ammonia as N during the Dry season, Wet season and Year round. The numeric targets are as follows:<br />
<br />
'''Dry Season (May 1 - Oct 31):'''<br />
Nitrate as N: must not exceed 1.4 to 6.4 mg/L in impaired receiving waters, depending on specific stream reach.<br />
Orthophosphate as P: must not exceed 0.7 to 0.13 mg/L in impaired recieving waters, depending on specific stream reach.<br />
<br />
'''Wet Season (Nov 1 - Apr 30):'''<br />
Nitrate as N: must not exceed 8 mg/L in impaired receiving waters, depending on specific stream reach.<br />
Orthophosphate as P: must not exceed 0.3 mg/L in impaired recieving waters, depending on specific stream reach.<br />
<br />
'''Year Round:'''<br />
Nitrate as N: must not exceed 10 mg/L in all recieving water designated MUN<br />
Un-ionized ammonia as N: must not exceed 0.025 mg/L in all receiving waters<br />
<br />
The [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nut_dataanalyrpt_061410.pdf progress report] described that one uniform nutrient target may not be sufficient in light of the large variability of stream morphology and hydraulics in the waterbodies contributing to the Lower Salinas River. The report explored a variety of ways to define a range of numeric targets. Final nutrient targets can be developed based on either calculations or estimations. The percentile based approach calculates the numeric target by using either the 25th percentile of nutrient data from reference streams or the 75th percentile of all nutrient data for the project area streams. The [[nutrient numeric endpoints]] (NNE) approach estimates in-stream benthic algal response to ambient stream conditions. <br />
<br />
Based on these approaches, the provisional and preliminary numeric targets for total nitrogen listed in the [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nut_dataanalyrpt_061410.pdf progress report] range from 1.4-2.2 mg/L depending on waterbody type. <br />
<br />
[[Image:Biostim 2 TMDL2012.png|275px|thumb|right|Photographic documentation of waterways with high eutrophication (biostimulation) in the Lower Salinas River Watershed (from 2012 TMDL draft report)]]<br />
<br />
=== Source Analysis ===<br />
A draft [[source analysis]] for nutrients in the Lower Salinas River watershed has not been completed as of March 2016. The report uses STEPL (Spreadsheet Tool for Estimating Pollutant Load) to calculate nutrient loads (nitrogen and phosphorus--N and P) from various characteristics including watershed area, and nutrient loads (based on land use and land cover--[[LULC]]). These estimates are made at the project-area scale (405 acres), and can be recalculated for individual subwatersheds. The report cites a 1999 US EPA report and states, "''both nitrogen and phosphorus reach surface waters at an elevated rate as a result of human activities''."<br />
<br />
This analysis reports estimates for urban annual N Load (lb/yr) and P Load (lb/yr) at 138,391 and 21,796 respectively. <br />
<br />
Cropland estimates of N and P loading at 2,211,230 and 629,492 lbs/year by far made up the greatest proportion of source loads identified in the project area. Total N and P loading (lbs/year) were 2,911,676 and 793,236 respectively. This means that agriculture represents 76% of N and 79% of P loading in the area. <br />
<br />
Grazing (209,521; 123,412) and forest (27,649; 11,327) also make contributions as well. <br />
<br />
Because shallow groundwater acts as a reservoir for elevated concentrations of nitrogen and phosphorus in the region<ref name="Nitrate report: Senate Bill X2 1 report"/>, their contribution to baseflow in streams becomes a prominent source of surface water nutrients in the dry (summer) season. These groundwater to surface water nutrient additions amount to 323,957 and 6,985 lbs/year nitrogen and phosphorus loading, respectively. Citing the Tetratech (2003) reporting (CITE), the draft TMDL report (2012) notes: <blockquote> "''...groundwater loads appear to be overwhelmingly due to human influences on groundwater in the project area.''" </blockquote><br />
<br />
Atmospheric deposition made up a less proportionate impact on N and P loading, however, it may have a disproportionate impact in terms of nutrient loading on lakes and reservoirs due to their high surface area. Atmospheric deposition annual load (lbs./year) were 899 and 211, respectively.<br />
<br />
There is a [http://ccows.csumb.edu/pubs/reports/CCoWS_NutrientSources_030529b_ta.pdf preliminary source analysis] prepared by Anderson, et al. (2003) that identified [[irrigated agriculture]] as a dominant source for high nutrient concentrations in southern Monterey Bay watersheds. The report notes that the source assignment is strongly ''qualitatively'' suggested "through "overwhelming" correlation of nutrient concentration data and land use."<br />
<br />
A study by the Lawrence Livermore National Laboratory (CITE Moran et al. 2011) demonstrated concurrent results, based of geochemical and isotopic signatures pointing to irrigated agriculture as the largest source of nitrate to surface and groundwater in areas sampled of the Salinas Valley. Specifically, isotopic signatures of oxygen matched inorganic fertilizers, and ''not'' those ranges expected from animal waste. The 2012 TMDL draft report acknowledges limitations in the geographic scope of the 2011 LLNL study in not being extrapolated to areas of the LSRW, while pointing out the utility of the study in backing, " ...the mass balance-based source analysis developed in this TMDL project report." Importantly, this study contrasts with Harter-Lund contract report for the SWRCB (2012) which states that the nitrate found in shallow groundwater comes from nutrient applications from decades ago (dairy waste or animal manure application).<br />
<br />
<br />
=== Monitoring ===<br />
<br />
The [[Environmental Protection Agency]] Nutrient TMDL development protocol document (2000) <ref name= "EPA doc" >[http://www.epa.gov/owow/tmdl/nutrient/pdf/nutrient.pdf]</ref> suggested steps include: <br />
<br />
*identifying key questions <br />
*evaluating monitoring options ''and'' <br />
*implementing the monitoring program. <br />
<br><br />
<br />
Irrigated agriculture has been identified as the dominant nutrient source contribution to the Lower Salinas River Watershed. As such, the monitoring plan for the LSRW necessarily focuses on quantifying agricultural nutrient [[source analysis]]. Monitoring may be informed by requirements outlined in the [[Conditional waiver of waste discharge requirements for irrigated lands | Ag Waiver]] evaluating results to ensure that agricultural [[best management practices]] (BMPs) are adequate to reduce nutrient levels.<br />
<br />
Urban stormwater runoff is another important source of nutrients in the LSRW. As the City of Salinas has already implemented a [http://www.ci.salinas.ca.us/services/maintenance/pdf/SalinasSMP_QAPP.pdf Storm Water Monitoring Program] water board staff should evaluate their results to ensure the Storm Water Management Program is effective at reducing nutrient effluent and has implemented [[Best Management Practices]].<br />
<br />
The [[MOS]] for the Lower Salinas River Watershed is dependent on the assumptions put into the INN benthic biomass modeler. <br />
<br />
In establishing TMDL allocations in the Lower Salinas River Watershed for nutrients, the Regional Water Quality Control Board could approach the allocations in a similar fashion as that taken in the Pajaro River Nitrate TMDL. By setting the [[load allocation]]s as a concentration at or below the [[numeric target]] for all sources, future growth and changes in land use will not lead to an exceedance of the TMDL. This will also eliminate the need for setting critical conditions based on changes in flow rate, which would absolutely be required if allocations were set as loads given in mass.<br />
<br />
The following table details impaired water bodies within the Salinas Watershed, and the justification for nutrient-related listing in the 2006, 2010, and 2012 impairment list. The list comprises 20 listed waterbodies with a combined six sources of impairment. <br />
<br>(No data reported past March 2010)<br />
<br />
{|border="2"<br />
!style="background: #efefef;" | Water Body<br />
!style="background: #efefef;" | 2006 Listed Impairment<br />
!style="background: #efefef;" | 2010 Listed Impairment<br />
!style="background: #efefef;" | 2012 Listed Impairment<br />
<br />
|-<br />
| Alisal Creek<br />
| Nutrient<br />
| Chlorophyll-a, Nitrate<br />
| Ammonia (Un-ionized), Chlorophyll-a<br />
|-<br />
| Alisal Slough <br />
| Not Listed<br />
| Low Dissolved Oxygen, Nitrate<br />
| Low Dissolved Oxygen, Nitrate (biostimulatory*) <br />
|-<br />
| Blanco Drain<br />
| Not Listed<br />
| Low Dissolved Oxygen, Nitrate<br />
| Low Dissolved Oxygen, Nitrate (biostimulatory) <br />
|-<br />
| Chualar Creek<br />
| Not Listed<br />
| Ammonia (Un-ionized), Nitrate<br />
| Nitrate (drinking water)<br />
|-<br />
| Esperanza Creek<br />
| Not Listed<br />
| Nitrate<br />
| Nitrate (drinking water), (NO DATA on un-ionized ammonia)<br />
|-<br />
| Espinosa Slough<br />
| Not Listed<br />
| Ammonia (Un-ionized), Nitrate<br />
| Ammonia (Un-ionized), Nitrate (drinking water)<br />
|-<br />
| Gabilan Creek<br />
| Nitrate<br />
| Ammonia (Un-ionized), Nitrate<br />
| Nitrate (drinking water)<br />
|-<br />
| Lower Reclamation Canal<br />
| N/A<br />
| N/A<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate (biostimulatory)<br />
|-<br />
| Lower Salinas River <br />
| N/A<br />
| N/A<br />
| Nitrate (biostimulatory)<br />
|-<br />
| Merrit Ditch<br />
| Not Listed<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate (biostimulatory)<br />
|-<br />
| Moro Cojo Slough<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen<br />
|-<br />
| Natividad Creek<br />
| Nitrate<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate (biostimulatory)<br />
|-<br />
| Old Salinas River<br />
| Not Listed<br />
| Chlorophyll-a, Low Dissolved Oxygen, Nitrate<br />
| Chlorophyll-a, Low Dissolved Oxygen, Nitrate (biostimulatory)<br />
|-<br />
| Old Salinas River Estuary<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nutrients<br />
| Nutrients<br />
| N/A (not in 2012 report?)<br />
|-<br />
| Quail Creek<br />
| Nutrients<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate<br />
| Ammonia (Un-ionized), Nitrate (drinking water)<br />
|-<br />
| Salinas Reclamation Canal<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate (biostimulatory)<br />
|-<br />
| Salinas River (lower, estuary near Gonzales Rd. Crossing)<br />
| Nitrate, Nutrients<br />
| Nitrate<br />
| Nitrate (biostimulatory)<br />
|-<br />
| Salinas River Lagoon (North)<br />
| Nutrients<br />
| Nutrients<br />
| N/A (not in 2012 report?)<br />
|-<br />
| Santa Rita Creek <br />
| Nitrate <br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate<br />
| Ammonia (Un-ionized), Low Dissolved Oxygen, Nitrate (drinking water)<br />
|-<br />
| Tembladero Slough<br />
| Ammonia (Un-ionized), Nutrients**<br />
| Chlorophyll-a, Nitrate, Nutrients**<br />
| Chlorophyll-a, Nitrate (biostimulatory), Nutrients<br />
|-<br />
|}<br />
*Nitrate is divided into [[biostimulatory]] impairment concentrations and drinking water impairment concentrations of 1.7-6.4 and 10 mg/L respectively.<br />
**Nutrient impairment refers to the biostimulatory effects of orthophosphate on [[algal bloom]] impairment.<br />
<br />
== Nitrate example ==<br />
[[Image:Nitrate Map 2012TMDLDraftReport.png|350px|right|thumb|Surface nitrate concentrations and estimated source contributions in the [[LSRW]].]]<br />
<br />
The project report completed in March 2013 by the California Regional Water Quality Control Board, (CRWQCB) Central Coast Region ([[CCRWQCB]]) on TMDLs for nutrients in the Lower Salinas River Watershed<ref name="TMDLreport"> [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf LSRW Nutrient TMDL Staff Report]</ref> Link to Waterboard TMDLs for Nutrients in the Lower Salinas Watershed [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/nutrients/index.shtml]</ref>.<br />
<br />
In this document, the work group identifies multiple [[Beneficial uses (Clean Water Act)|beneficial uses]] (BUs) as impaired, including those for drinking water supply, livestock watering, and aquatic habitat BUs.<br />
<br />
From the 2013 project report<ref name="TMDLreport"/>: <br />
<blockquote><br />
"''Problem Statement'':<br />
''"Discharges of nitrogen compounds and orthophosphate are occurring at levels in surface waters<br />
which are impairing a wide spectrum of beneficial uses and, therefore, constitute a serious <br />
water quality problem. The municipal and domestic drinking water supply (MUN, GWR) <br />
beneficial uses and the range of aquatic habitat beneficial uses are currently impaired; potential <br />
or future beneficial uses of the agricultural irrigation water supply (AGR) for sensitive crops may <br />
be impaired..." <br /><br />"A total of 34 <br />
waterbody/pollutant combinations are impaired due to exceedances of water quality objectives. <br />
The pollutants addressed in this TMDL are nitrate, un-ionized ammonia, and orthophosphate –<br />
orthophosphate is included as a pollutant due to biostimulatory impairments of surface waters. <br />
Reducing these pollutants is also anticipated to address several 303(d)-listed dissolved oxygen <br />
and chlorophyll a impairments in the TMDL project area."''<br />
</blockquote><br />
<br />
== Beneficial Uses (BUs) Associated with Waterways Listed for Nutrient Impairments ==<br />
<br />
[[Beneficial uses]] of waterways and water quality objectives are vital to determining water quality standards and goals. Below is a list of BUs, and a table showing identified BUs for water bodies within the Salinas watershed.<br />
<br />
* Municipal and Domestic supply (MUN)<br />
* Agriculture (AGR)<br />
* Industrial Process (PRO)<br />
* Industrial Service (IND)<br />
* Ground Water Recharge (GWR)<br />
* Water Contact Recreation (REC1)<br />
* Non-Contact Water Recreation (REC2)<br />
* Cold Freshwater Habitat (COLD)<br />
* Warm Freshwater Habitat (WARM)<br />
* Estuarine Habitat (EST)<br />
* Wildlife Habitat (WILD)<br />
* Rare, Threatened, or Endangered Species (RARE)<br />
* Migration of Aquatic Organisms (MIGR)<br />
* Spawning, Reproduction, and/or Early Development (SPWN)<br />
* Biological Habitats of Special Significance (BIOL)<br />
* Shellfish Harvesting (SHELL)<br />
* Commercial and Sport Fishing (COMM)<br />
* Freshwater replenishment (FRESH)<br />
<br />
{| border="3"<br />
!style="background: #efefef;" | Waterbody<br />
!style="background: #efefef;" | MUN<br />
!style="background: #efefef;" | AGR<br />
!style="background: #efefef;" | PRO<br />
!style="background: #efefef;" | IND<br />
!style="background: #efefef;" | GWR<br />
!style="background: #efefef;" | REC1<br />
!style="background: #efefef;" | REC2<br />
!style="background: #efefef;" | WILD<br />
!style="background: #efefef;" | COLD<br />
!style="background: #efefef;" | WARM<br />
!style="background: #efefef;" | MIGR<br />
!style="background: #efefef;" | SPWN<br />
!style="background: #efefef;" | BIOL<br />
!style="background: #efefef;" | RARE<br />
!style="background: #efefef;" | EST<br />
!style="background: #efefef;" | FRESH<br />
!style="background: #efefef;" | COMM<br />
!style="background: #efefef;" | SHELL<br />
|-<br />
|'''Old Salinas River Estuary'''<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|-<br />
|'''Salinas River Lagoon (North)'''<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|-<br />
|'''Tembladero Slough'''<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|-<br />
|'''Espinosa Slough'''<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|-<br />
|'''Salinas Reclamation Canal'''<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|-<br />
|'''Alisal Creek'''<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|-<br />
|'''Blanco Drain'''<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|-<br />
|'''Salinas River, down stream of Spreckels Gage'''<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|-<br />
|'''Salinas River,Chualar to Spreckles'''<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|-<br />
|'''Quail Creek'''<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|style="text-align: center;"|X<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|<br />
|}<br />
<br />
== Public Participation ==<br />
Due to the large number of stakeholders that are affected by the implementation of Lower Salinas River Watershed Nutrient TMDL, the Central Coast Water board had scheduled various public hearings and collaborative stakeholder meetings during different stages of the process. <br />
<br />
During the development of the Fecal Coliform TMDL report for the Lower Salinas River Watershed ([http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/lower_fecal/sal_fc_tmdl_att2_projrpt.pdf 2010 Report]), Water Board staff conducted stakeholder outreach efforts throughout the process. Water Board staff made several presentations to engage stakeholders and results were presented in newspapers and television media. In addition, a CEQA stakeholder scoping meeting was held in June of 2007 and another stakeholder meeting was held in August of 2009. A formal Central Coast Water Board public hearing was also held and public comments were solicited prior to the hearing. <br />
<br />
Stakeholders included: <br />
*The City of Salinas<br />
*[[CCRWQCB]] [http://www.swrcb.ca.gov/centralcoast/]<br />
*[[California Coastkeeper Alliance]] [http://www.cacoastkeeper.org/]<br />
*Central Coast Agricultural Task Force<br />
*[[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
*Commercial Ranches<br />
*Commercial Farms<br />
*[[Grower-Shipper Association|Grower-Shipper Association of Central California]] [http://www.growershipper.com/]<br />
*Monterey Bay National Marine Sanctuary<br />
*Monterey County Agricultural Commissioner’s Office<br />
*Monterey County Farm Bureau<br />
*Monterey County Cattlemen’s Association<br />
*Monterey County Department of Environmental Health<br />
*Monterey County Water Resources Agency<br />
*[[National Marine Fisheries Service|NMFS]] [http://www.nmfs.noaa.gov/]<br />
*Resource Conservation District of Monterey County<br />
*State of California Department of Health Services<br />
*United Fresh Fruit and Vegetable Association<br />
*United States Department of Agriculture<br />
*United States Food and Drug Administration<br />
<br />
== References ==<br />
<references/><br />
<br />
==See also==<br />
* [[Beneficial uses]]<br />
* [[Lower Salinas River Watershed]]<br />
* [[Monterey Bay Region]]<br />
<br />
* [[TMDL]]<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Lower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress]] <br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[TMDL for Chlorpyrifos and Diazinon in Lower Salinas River Watershed, Monterey County, California]]<br />
<br />
==External Links==<br />
* [http://www.ccamp.org/ Central Coast Ambient Monitoring Program] <br />
* [http://ccows.csumb.edu/home/ Central Coast Watershed Studies Team]<br />
* [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/303d_and_tmdl_projects.shtml Central Coast Regional Water Quality Control Board 303(d) Investigations and TMDL Projects]<br />
* [http://www.epa.gov/waterscience/criteria/nutrient/guidance/rivers/rivers-streams-full.pdf July 2000 EPA Nutrient Criteria Technical Guidance Manual for Rivers and Streams]<br />
* [http://rd.tetratech.com/epa/Documents/CA_NNE_July_Final.pdf Tetratech Final California Nutrient Numeric Endpoints (NNE) Report 2006 ]<br />
<br />
== Disclaimer ==<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-14T18:48:11Z<p>Kaitlync: /* Action Taken since TMDL Approval */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards, the [[EPA]] implemented a list of 303(d) listed waterbodies under [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] of the [[Clean Water Act]] (CWA). This list is assessed through [[Total Maximum Daily Load (TMDL)]] standards.<br />
<br />
The [[Lower Salinas River Watershed]](LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-13T20:16:24Z<p>Kaitlync: /* Action Taken since TMDL Approval */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards, the [[EPA]] implemented a list of 303(d) listed waterbodies under [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] of the [[Clean Water Act]] (CWA). This list is assessed through [[Total Maximum Daily Load (TMDL)]] standards.<br />
<br />
The [[Lower Salinas River Watershed]](LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
The Old Salinas River, at Monterey Dunes Way, is the only monitoring site in the Lower Salinas River Watershed that have shown decreasing levels of Nitrate. <br />
Salinas River at Davis Rd & Tembladero Slough at Monterey Dunes Way have shown an increasing trend of Nitrate. <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-ionized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
Ammonia levels have decreased in the Salinas River at Chualar Bridge, the Gonzales River Road Bridge, and Chualar Creek at Chualar River Road.<br />
<br />
Ammonia levels have increased in the Old Salinas River at Monterey Dunes Way.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
Over the past year, Orthophosphate levels have decreased in the Salinas River at Chualar Bridge and Chualar Creek at Chualar River Road.<br />
<br />
Orthophosphate levels have increased in the past year in the Old Salinas River at Monterey Dunes Way. <br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-13T20:14:19Z<p>Kaitlync: /* Summary */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards, the [[EPA]] implemented a list of 303(d) listed waterbodies under [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] of the [[Clean Water Act]] (CWA). This list is assessed through [[Total Maximum Daily Load (TMDL)]] standards.<br />
<br />
The [[Lower Salinas River Watershed]](LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
The Old Salinas River, at Monterey Dunes Way, is the only monitoring site in the Lower Salinas River Watershed that have shown decreasing levels of Nitrate. <br />
Salinas River at Davis Rd & Tembladero Slough at Monterey Dunes Way have shown an increasing trend of Nitrate. <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-iodized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
Ammonia levels have decreased in the Salinas River at Chualar Bridge, the Gonzales River Road Bridge, and Chualar Creek at Chualar River Road.<br />
<br />
Ammonia levels have increased in the Old Salinas River at Monterey Dunes Way.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
Over the past year, Orthophosphate levels have decreased in the Salinas River at Chualar Bridge and Chualar Creek at Chualar River Road.<br />
<br />
Orthophosphate levels have increased in the past year in the Old Salinas River at Monterey Dunes Way. <br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-13T20:13:37Z<p>Kaitlync: /* Summary */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards, the [[EPA]] implemented a list of 303(d) listed waterbodies under [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] of the [[Clean Water Act]] (CWA). This list is assessed through [[Total Maximum Daily Load (TMDL)]] standards.<br />
<br />
The Lower Salinas River Watershed (LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
The Old Salinas River, at Monterey Dunes Way, is the only monitoring site in the Lower Salinas River Watershed that have shown decreasing levels of Nitrate. <br />
Salinas River at Davis Rd & Tembladero Slough at Monterey Dunes Way have shown an increasing trend of Nitrate. <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-iodized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
Ammonia levels have decreased in the Salinas River at Chualar Bridge, the Gonzales River Road Bridge, and Chualar Creek at Chualar River Road.<br />
<br />
Ammonia levels have increased in the Old Salinas River at Monterey Dunes Way.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
Over the past year, Orthophosphate levels have decreased in the Salinas River at Chualar Bridge and Chualar Creek at Chualar River Road.<br />
<br />
Orthophosphate levels have increased in the past year in the Old Salinas River at Monterey Dunes Way. <br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-13T20:12:44Z<p>Kaitlync: /* Summary */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards for multi-use water bodies, the [[EPA]] implemented a list of 303(d) listed rivers under [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] of the [[Clean Water Act]] (CWA). This list is assessed through [[Total Maximum Daily Load (TMDL)]] standards.<br />
<br />
The Lower Salinas River Watershed (LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
The Old Salinas River, at Monterey Dunes Way, is the only monitoring site in the Lower Salinas River Watershed that have shown decreasing levels of Nitrate. <br />
Salinas River at Davis Rd & Tembladero Slough at Monterey Dunes Way have shown an increasing trend of Nitrate. <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-iodized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
Ammonia levels have decreased in the Salinas River at Chualar Bridge, the Gonzales River Road Bridge, and Chualar Creek at Chualar River Road.<br />
<br />
Ammonia levels have increased in the Old Salinas River at Monterey Dunes Way.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
Over the past year, Orthophosphate levels have decreased in the Salinas River at Chualar Bridge and Chualar Creek at Chualar River Road.<br />
<br />
Orthophosphate levels have increased in the past year in the Old Salinas River at Monterey Dunes Way. <br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-13T20:08:13Z<p>Kaitlync: /* Summary */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards for multi-use water bodies, the [[EPA]] implemented a list of 303(d) listed rivers under [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] of the [[Clean Water Act]] (CWA). [[Total Maximum Daily Load (TMDL)]] is the criteria for this list.0<br />
<br />
The Lower Salinas River Watershed (LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
The Old Salinas River, at Monterey Dunes Way, is the only monitoring site in the Lower Salinas River Watershed that have shown decreasing levels of Nitrate. <br />
Salinas River at Davis Rd & Tembladero Slough at Monterey Dunes Way have shown an increasing trend of Nitrate. <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-iodized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
Ammonia levels have decreased in the Salinas River at Chualar Bridge, the Gonzales River Road Bridge, and Chualar Creek at Chualar River Road.<br />
<br />
Ammonia levels have increased in the Old Salinas River at Monterey Dunes Way.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
Over the past year, Orthophosphate levels have decreased in the Salinas River at Chualar Bridge and Chualar Creek at Chualar River Road.<br />
<br />
Orthophosphate levels have increased in the past year in the Old Salinas River at Monterey Dunes Way. <br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-13T20:06:22Z<p>Kaitlync: </p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards for multi-use water bodies, the [[EPA]] implemented a list of 303(d) listed rivers under [[Section 303(d)]] of the [[Clean Water Act]] (CWA). [[Total Maximum Daily Load (TMDL)]] is the criteria for this list.0<br />
<br />
The Lower Salinas River Watershed (LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coast Region]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
The Old Salinas River, at Monterey Dunes Way, is the only monitoring site in the Lower Salinas River Watershed that have shown decreasing levels of Nitrate. <br />
Salinas River at Davis Rd & Tembladero Slough at Monterey Dunes Way have shown an increasing trend of Nitrate. <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-iodized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
Ammonia levels have decreased in the Salinas River at Chualar Bridge, the Gonzales River Road Bridge, and Chualar Creek at Chualar River Road.<br />
<br />
Ammonia levels have increased in the Old Salinas River at Monterey Dunes Way.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
Over the past year, Orthophosphate levels have decreased in the Salinas River at Chualar Bridge and Chualar Creek at Chualar River Road.<br />
<br />
Orthophosphate levels have increased in the past year in the Old Salinas River at Monterey Dunes Way. <br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-11T17:52:31Z<p>Kaitlync: /* Status of Orthophosphate */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards for multi-use water bodies, the [[EPA]] implemented a list of 303(d) listed rivers under [[Section 303(d)]] of the [[Clean Water Act]] (CWA). [[Total Maximum Daily Load (TMDL)]] is the criteria for this list.0<br />
<br />
The Lower Salinas River Watershed (LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coastal Basin]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
The Old Salinas River, at Monterey Dunes Way, is the only monitoring site in the Lower Salinas River Watershed that have shown decreasing levels of Nitrate. <br />
Salinas River at Davis Rd & Tembladero Slough at Monterey Dunes Way have shown an increasing trend of Nitrate. <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-iodized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
Ammonia levels have decreased in the Salinas River at Chualar Bridge, the Gonzales River Road Bridge, and Chualar Creek at Chualar River Road.<br />
<br />
Ammonia levels have increased in the Old Salinas River at Monterey Dunes Way.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L during the wet season (November 1st - April 30th). The dry season target (May 1st - October 31st) depends on the specific waterbody, but target threshold ranges from 0.7 mg/L to 0.13 mg/L. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
Over the past year, Orthophosphate levels have decreased in the Salinas River at Chualar Bridge and Chualar Creek at Chualar River Road.<br />
<br />
Orthophosphate levels have increased in the past year in the Old Salinas River at Monterey Dunes Way. <br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-11T17:50:16Z<p>Kaitlync: /* Status of Un-ionized Ammonia */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards for multi-use water bodies, the [[EPA]] implemented a list of 303(d) listed rivers under [[Section 303(d)]] of the [[Clean Water Act]] (CWA). [[Total Maximum Daily Load (TMDL)]] is the criteria for this list.0<br />
<br />
The Lower Salinas River Watershed (LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coastal Basin]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
The Old Salinas River, at Monterey Dunes Way, is the only monitoring site in the Lower Salinas River Watershed that have shown decreasing levels of Nitrate. <br />
Salinas River at Davis Rd & Tembladero Slough at Monterey Dunes Way have shown an increasing trend of Nitrate. <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L.<ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> The majority of the water bodies in the Lower Salinas Valley have an un-iodized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
Ammonia levels have decreased in the Salinas River at Chualar Bridge, the Gonzales River Road Bridge, and Chualar Creek at Chualar River Road.<br />
<br />
Ammonia levels have increased in the Old Salinas River at Monterey Dunes Way.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L. CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
Over the past year, Orthophosphate levels have decreased in the Salinas River at Chualar Bridge and Chualar Creek at Chualar River Road.<br />
<br />
Orthophosphate levels have increased in the past year in the Old Salinas River at Monterey Dunes Way. <br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-11T17:49:58Z<p>Kaitlync: /* Status of Nitrate */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards for multi-use water bodies, the [[EPA]] implemented a list of 303(d) listed rivers under [[Section 303(d)]] of the [[Clean Water Act]] (CWA). [[Total Maximum Daily Load (TMDL)]] is the criteria for this list.0<br />
<br />
The Lower Salinas River Watershed (LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coastal Basin]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref name="TMDL Summary">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
The Old Salinas River, at Monterey Dunes Way, is the only monitoring site in the Lower Salinas River Watershed that have shown decreasing levels of Nitrate. <br />
Salinas River at Davis Rd & Tembladero Slough at Monterey Dunes Way have shown an increasing trend of Nitrate. <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L. The majority of the water bodies in the Lower Salinas Valley have an un-iodized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
Ammonia levels have decreased in the Salinas River at Chualar Bridge, the Gonzales River Road Bridge, and Chualar Creek at Chualar River Road.<br />
<br />
Ammonia levels have increased in the Old Salinas River at Monterey Dunes Way.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L. CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
Over the past year, Orthophosphate levels have decreased in the Salinas River at Chualar Bridge and Chualar Creek at Chualar River Road.<br />
<br />
Orthophosphate levels have increased in the past year in the Old Salinas River at Monterey Dunes Way. <br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-11T17:49:13Z<p>Kaitlync: /* Status of Nitrate */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards for multi-use water bodies, the [[EPA]] implemented a list of 303(d) listed rivers under [[Section 303(d)]] of the [[Clean Water Act]] (CWA). [[Total Maximum Daily Load (TMDL)]] is the criteria for this list.0<br />
<br />
The Lower Salinas River Watershed (LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coastal Basin]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L for all receiving waterbodies. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref>[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
The Old Salinas River, at Monterey Dunes Way, is the only monitoring site in the Lower Salinas River Watershed that have shown decreasing levels of Nitrate. <br />
Salinas River at Davis Rd & Tembladero Slough at Monterey Dunes Way have shown an increasing trend of Nitrate. <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L. The majority of the water bodies in the Lower Salinas Valley have an un-iodized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
Ammonia levels have decreased in the Salinas River at Chualar Bridge, the Gonzales River Road Bridge, and Chualar Creek at Chualar River Road.<br />
<br />
Ammonia levels have increased in the Old Salinas River at Monterey Dunes Way.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L. CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
Over the past year, Orthophosphate levels have decreased in the Salinas River at Chualar Bridge and Chualar Creek at Chualar River Road.<br />
<br />
Orthophosphate levels have increased in the past year in the Old Salinas River at Monterey Dunes Way. <br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-11T17:48:21Z<p>Kaitlync: /* Status of Nitrate */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards for multi-use water bodies, the [[EPA]] implemented a list of 303(d) listed rivers under [[Section 303(d)]] of the [[Clean Water Act]] (CWA). [[Total Maximum Daily Load (TMDL)]] is the criteria for this list.0<br />
<br />
The Lower Salinas River Watershed (LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coastal Basin]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The overall target TMDL for Nitrate is 10 mg/L. During the dry season (May 1st - October 31st) Nitrate should not be over 1.4 - 6.4 mg/L in impaired receiving waters for specific streams. During the wet season nitrate should not exceed 8 mg/L for impaired, receiving streams. <ref>[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL Summary]</ref> <br />
<br />
The Old Salinas River, at Monterey Dunes Way, is the only monitoring site in the Lower Salinas River Watershed that have shown decreasing levels of Nitrate. <br />
Salinas River at Davis Rd & Tembladero Slough at Monterey Dunes Way have shown an increasing trend of Nitrate. <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L. The majority of the water bodies in the Lower Salinas Valley have an un-iodized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
Ammonia levels have decreased in the Salinas River at Chualar Bridge, the Gonzales River Road Bridge, and Chualar Creek at Chualar River Road.<br />
<br />
Ammonia levels have increased in the Old Salinas River at Monterey Dunes Way.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L. CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
Over the past year, Orthophosphate levels have decreased in the Salinas River at Chualar Bridge and Chualar Creek at Chualar River Road.<br />
<br />
Orthophosphate levels have increased in the past year in the Old Salinas River at Monterey Dunes Way. <br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-11T17:43:26Z<p>Kaitlync: /* Water Quality Monitoring */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards for multi-use water bodies, the [[EPA]] implemented a list of 303(d) listed rivers under [[Section 303(d)]] of the [[Clean Water Act]] (CWA). [[Total Maximum Daily Load (TMDL)]] is the criteria for this list.0<br />
<br />
The Lower Salinas River Watershed (LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coastal Basin]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems. <br />
<br />
The Central Coast Water Board's goal is to have all water bodies meet, or under, target TMDL levels by 2025 [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/pesticide/sal_op_tmdl_att2_projrpt.pdf Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California 2011]. <br />
<br />
===Status of Nitrate===<br />
The target TMDL for Nitrate is 10 mg/L. The Old Salinas River, at Monterey Dunes Way, is the only monitoring site in the Lower Salinas River Watershed that have shown decreasing levels of Nitrate. <br />
<br />
Salinas River at Davis Rd & Tembladero Slough at Monterey Dunes Way have shown an increasing trend of Nitrate. <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L. The majority of the water bodies in the Lower Salinas Valley have an un-iodized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
Ammonia levels have decreased in the Salinas River at Chualar Bridge, the Gonzales River Road Bridge, and Chualar Creek at Chualar River Road.<br />
<br />
Ammonia levels have increased in the Old Salinas River at Monterey Dunes Way.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L. CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
Over the past year, Orthophosphate levels have decreased in the Salinas River at Chualar Bridge and Chualar Creek at Chualar River Road.<br />
<br />
Orthophosphate levels have increased in the past year in the Old Salinas River at Monterey Dunes Way. <br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-11T17:38:43Z<p>Kaitlync: /* Action Taken since TMDL Approval */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards for multi-use water bodies, the [[EPA]] implemented a list of 303(d) listed rivers under [[Section 303(d)]] of the [[Clean Water Act]] (CWA). [[Total Maximum Daily Load (TMDL)]] is the criteria for this list.0<br />
<br />
The Lower Salinas River Watershed (LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coastal Basin]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems.<br />
<br />
===Status of Nitrate===<br />
The target TMDL for Nitrate is 10 mg/L. The Old Salinas River, at Monterey Dunes Way, is the only monitoring site in the Lower Salinas River Watershed that have shown decreasing levels of Nitrate. <br />
<br />
Salinas River at Davis Rd & Tembladero Slough at Monterey Dunes Way have shown an increasing trend of Nitrate. <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L. The majority of the water bodies in the Lower Salinas Valley have an un-iodized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
Ammonia levels have decreased in the Salinas River at Chualar Bridge, the Gonzales River Road Bridge, and Chualar Creek at Chualar River Road.<br />
<br />
Ammonia levels have increased in the Old Salinas River at Monterey Dunes Way.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L. CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
Over the past year, Orthophosphate levels have decreased in the Salinas River at Chualar Bridge and Chualar Creek at Chualar River Road.<br />
<br />
Orthophosphate levels have increased in the past year in the Old Salinas River at Monterey Dunes Way. <br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/File:LowersalinasRiver_NitrateGraph.JPGFile:LowersalinasRiver NitrateGraph.JPG2016-04-11T17:37:09Z<p>Kaitlync: Kaitlync uploaded a new version of &quot;File:LowersalinasRiver NitrateGraph.JPG&quot;</p>
<hr />
<div></div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-11T17:33:48Z<p>Kaitlync: </p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|550px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards for multi-use water bodies, the [[EPA]] implemented a list of 303(d) listed rivers under [[Section 303(d)]] of the [[Clean Water Act]] (CWA). [[Total Maximum Daily Load (TMDL)]] is the criteria for this list.0<br />
<br />
The Lower Salinas River Watershed (LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coastal Basin]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems.<br />
<br />
===Status of Nitrate===<br />
The target TMDL for Nitrate is 10 mg/L. The Old Salinas River, at Monterey Dunes Way, is the only monitoring site in the Lower Salinas River Watershed that have shown decreasing levels of Nitrate. <br />
<br />
Salinas River at Davis Rd & Tembladero Slough at Monterey Dunes Way have shown an increasing trend of Nitrate. <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L. The majority of the water bodies in the Lower Salinas Valley have an un-iodized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
Ammonia levels have decreased in the Salinas River at Chualar Bridge, the Gonzales River Road Bridge, and Chualar Creek at Chualar River Road.<br />
<br />
Ammonia levels have increased in the Old Salinas River at Monterey Dunes Way.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L. CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
Over the past year, Orthophosphate levels have decreased in the Salinas River at Chualar Bridge and Chualar Creek at Chualar River Road.<br />
<br />
Orthophosphate levels have increased in the past year in the Old Salinas River at Monterey Dunes Way. <br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-11T17:32:13Z<p>Kaitlync: /* Projects */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|450px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards for multi-use water bodies, the [[EPA]] implemented a list of 303(d) listed rivers under [[Section 303(d)]] of the [[Clean Water Act]] (CWA). [[Total Maximum Daily Load (TMDL)]] is the criteria for this list.0<br />
<br />
The Lower Salinas River Watershed (LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coastal Basin]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems.<br />
<br />
===Status of Nitrate===<br />
The target TMDL for Nitrate is 10 mg/L. The Old Salinas River, at Monterey Dunes Way, is the only monitoring site in the Lower Salinas River Watershed that have shown decreasing levels of Nitrate. <br />
<br />
Salinas River at Davis Rd & Tembladero Slough at Monterey Dunes Way have shown an increasing trend of Nitrate. <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L. The majority of the water bodies in the Lower Salinas Valley have an un-iodized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
Ammonia levels have decreased in the Salinas River at Chualar Bridge, the Gonzales River Road Bridge, and Chualar Creek at Chualar River Road.<br />
<br />
Ammonia levels have increased in the Old Salinas River at Monterey Dunes Way.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L. CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
Over the past year, Orthophosphate levels have decreased in the Salinas River at Chualar Bridge and Chualar Creek at Chualar River Road.<br />
<br />
Orthophosphate levels have increased in the past year in the Old Salinas River at Monterey Dunes Way. <br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-11T17:31:07Z<p>Kaitlync: /* Projects */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|450px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards for multi-use water bodies, the [[EPA]] implemented a list of 303(d) listed rivers under [[Section 303(d)]] of the [[Clean Water Act]] (CWA). [[Total Maximum Daily Load (TMDL)]] is the criteria for this list.0<br />
<br />
The Lower Salinas River Watershed (LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coastal Basin]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems.<br />
<br />
===Status of Nitrate===<br />
The target TMDL for Nitrate is 10 mg/L. The Old Salinas River, at Monterey Dunes Way, is the only monitoring site in the Lower Salinas River Watershed that have shown decreasing levels of Nitrate. <br />
<br />
Salinas River at Davis Rd & Tembladero Slough at Monterey Dunes Way have shown an increasing trend of Nitrate. <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L. The majority of the water bodies in the Lower Salinas Valley have an un-iodized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
Ammonia levels have decreased in the Salinas River at Chualar Bridge, the Gonzales River Road Bridge, and Chualar Creek at Chualar River Road.<br />
<br />
Ammonia levels have increased in the Old Salinas River at Monterey Dunes Way.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L. CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
Over the past year, Orthophosphate levels have decreased in the Salinas River at Chualar Bridge and Chualar Creek at Chualar River Road.<br />
<br />
Orthophosphate levels have increased in the past year in the Old Salinas River at Monterey Dunes Way. <br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
==Projects==<br />
<br />
For complete list, see [[TMDLs in the Monterey Bay Region of California]]. <br />
<br />
TMDL Projects Currently in Development for the Lower Salinas Valley (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/pajaro/nutrients/index.shtml Pajaro River] (nutrients)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-11T17:28:52Z<p>Kaitlync: /* Action Taken since TMDL Approval */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|450px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards for multi-use water bodies, the [[EPA]] implemented a list of 303(d) listed rivers under [[Section 303(d)]] of the [[Clean Water Act]] (CWA). [[Total Maximum Daily Load (TMDL)]] is the criteria for this list.0<br />
<br />
The Lower Salinas River Watershed (LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coastal Basin]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems.<br />
<br />
===Status of Nitrate===<br />
The target TMDL for Nitrate is 10 mg/L. The Old Salinas River, at Monterey Dunes Way, is the only monitoring site in the Lower Salinas River Watershed that have shown decreasing levels of Nitrate. <br />
<br />
Salinas River at Davis Rd & Tembladero Slough at Monterey Dunes Way have shown an increasing trend of Nitrate. <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L. The majority of the water bodies in the Lower Salinas Valley have an un-iodized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
Ammonia levels have decreased in the Salinas River at Chualar Bridge, the Gonzales River Road Bridge, and Chualar Creek at Chualar River Road.<br />
<br />
Ammonia levels have increased in the Old Salinas River at Monterey Dunes Way.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L. CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
Over the past year, Orthophosphate levels have decreased in the Salinas River at Chualar Bridge and Chualar Creek at Chualar River Road.<br />
<br />
Orthophosphate levels have increased in the past year in the Old Salinas River at Monterey Dunes Way. <br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
==Projects==<br />
<br />
TMDL Projects Currently in Development (2015-2016)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/carpinteria_marsh/index.shtml Carpinteria Salt Marsh] (nutrients)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/pajaro/nutrients/index.shtml Pajaro River] (nutrients)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/pinto_lake/index.shtml Pinto Lake catchment] (harmful algal blooms)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/santa_maria/salts/index.shtml Santa Maria River] (salts)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/santa_ynez/nutrient/index.shtml Santa Ynez River] (nutrients)<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/TMDLs_in_the_Monterey_Bay_Region_of_CaliforniaTMDLs in the Monterey Bay Region of California2016-04-11T17:28:40Z<p>Kaitlync: /* Central Coast TMDL Projects */</p>
<hr />
<div>This page provides links to documents relating to [[303d]] listings and [[Total Maximum Daily Load]] (TMDL) plans in [[California's Central Coast Region]]. The page was created by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
==Background==<br />
:''Main article: [[TMDL]]''<br />
<br />
Under 1987 provisions (section 304 (1)) to the [[Clean Water Act]] of 1972, states must identify and report all water bodies which do not meet [[water quality]] or [[beneficial use]] standards. Those impaired (polluted) water bodies not meeting water quality standards must be placed on the [[303d list]]. <br />
<br />
States must submit updated lists every two years. Along with identification of impaired water bodies, states must also identify stressors causing the impairment (i.e. pollutants), which are also identified on the [[303d list]]. A remediation plan must then be developed and implemented for each impaired water body listed. <br />
<br />
These plans are known as total maximum daily loads (TMDLs). [[TMDL]]s are used to define and achieve a total maximum daily load for each pollutant causing impairment within a water body. The list also identifies where a TMDL has been approved by the [[Environmental Protection Agency]] (EPA) and implementation is available, but water quality standards have not yet been met, or an action other than a TMDL is being used to address the issue.<br />
<br />
===Summary of listing categories===<br />
The CCRWQCB has assigned grouped 303(d) listings into the following categories. Only categories 4A, 4B, and 5 are included in the 303(d) list.<ref>[[CCRWQCB|Central Coast Regional Water Quality Control Board]]. 2009. Clean water act sections 305(b) and 303(d) integrated report for the Central Coast region. Public review draft April. http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/2008_0409_draft_integrated_report.pdf</ref><br />
<br />
* Category 1. All core uses are supported;<br />
* Category 2. At least one core use is supported;<br />
* Category 3. Insufficient information exists to make a determination;<br />
* Category 4A. At least one core use is not supported, however "a TMDL has been developed and approved by USEPA and is reasonably expected to result in the attainment of the water quality standard within a reasonable, specified time frame (p.10, CCRWQCB)." <br />
* Category 4B. At least one core use is not supported, however "an existing regulatory program is reasonably expected to result in the attainment of the water quality standard within a reasonable, specified timeframe (p.10, CCRWQCB)."<br />
* Category 5. At least one core use is not supported. A TMDL needs to be developed.<br />
<br />
==Central Coast 303d list documents==<br />
The [[303d list]] for the Central Coast region of California (Region 3) is maintained by the [[Central Coast Regional Water Quality Control Board]]. The 2006 303(d) list for the Central Coast region is available as a .pdf or .xls file<ref>CCRWQCB. 2006. 2006 CWA Section 303(d) List of Water Quality Limited Segments Requiring TMDLs (Central Coast Region). http://www.waterboards.ca.gov/water_issues/programs/tmdl/docs/303dlists2006/epa/r3_06_303d_reqtmdls.pdf </ref><ref>CCRWQCB. 2006. List of Water Quality Limited Segments Requiring TMDLs (Central Coast Region) http://www.waterboards.ca.gov/water_issues/programs/tmdl/docs/303dlists2006/epa/state_06_303dlist.xls></ref>. The 2010 303(d) statewide list is available as an .xls file<ref>CCRWQCB. 2010. Combined California 2010 303(d) list with potential sources. http://maps.waterboards.ca.gov/webmap/303d/files/2010_USEPA_approv_303d_List_Final_122311wsrcs.xls</ref> but is not available as a Central Coast-specific document as of March 2014. The 2012 303(d) statewide list was approved by the EPA on July 30, 2015 and is available via an [http://www.waterboards.ca.gov/water_issues/programs/tmdl/integrated2012.shtml integrated report] on the [[State Water Resources Control Board]] website. Although there was some Central Coast data not included in the 2012 Integrated Report, and in those cases, decisions were carried over from the 2010 list.<br />
<br />
<br />
====Monterey Bay area reports and listings, 2015====<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/ag_waivers/docs/no_co_characterization%20rpt_06012015_final.pdf Northern Counties Groundwater Characterization, Salinas Valley, Pajaro Valley and Gilroy‐Hollister Valley]<br />
<br />
====Monterey Bay area reports and listings, 2010-2012====<br />
<br />
* [http://www.waterboards.ca.gov/centralcoast/board_info/agendas/2011/march/Item_14/14_att7.pdf Water Quality Conditions in the Central Coast Region Related to Agricultural Discharges]<br />
Please see the following pages for information on 303(d) listed waterbodies and their impairments in the Monterey Bay region.<br />
*[[Monterey Bay Area TMDL Listings]] (table)<br />
*[[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]] (list)<br />
*[[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
<br />
====Central Coast reports and listings, 2006-2008====<br />
<br />
* From the [http://www.swrcb.ca.gov/rwqcb3 CCRWQCB web site], [http://www.swrcb.ca.gov/rwqcb3/water_issues/programs/tmdl/index.shtml TMDL program], [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d_list.shtml 303d-list page]:<br />
** [http://www.waterboards.ca.gov/water_issues/programs/tmdl/docs/303dlists2006/epa/r3_06_303d_reqtmdls.pdf Impaired waterbody (303d) list (.pdf)].<br />
** [http://www.waterboards.ca.gov/water_issues/programs/tmdl/docs/303dlists2006/epa/state_06_303dlist.xls Impaired waterbody (303d) list (.xls)]<br />
** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/2008_0409_draft_integrated_report.pdf Clean Water Act Sections 305(b) and 303(d) Integrated Report for the Central Coast Region] (approved 2009)<br />
** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_a.pdf Recommended changes since the 2006 list]<br />
** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_f.shtml 2008 New or Revised Fact Sheets for the Central Coast region]<br />
** 2008 listings by category (see [[#Summary of listing categories | Summary of listing categories]]):<br />
*** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_b.shtml Category 2]<br />
*** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_c.shtml Category 3]<br />
*** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_d.shtml Category 4A]<br />
*** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_e.shtml Category 5]<br />
<br />
<br />
====Statewide listings including the Central Coast, 2010====<br />
<br />
*From the [http://www.waterboards.ca.gov/water_issues/programs/tmdl/integrated2010.shtml State Water Resources Control Board 2010 Integrated Report] website:<br />
**[http://maps.waterboards.ca.gov/webmap/303d/files/2010_USEPA_approv_303d_List_Final_122311.xls Impaired waterbody (303(d)) list, without potential sources (.xls)]<br />
**[http://maps.waterboards.ca.gov/webmap/303d/files/2010_USEPA_approv_303d_List_Final_122311wsrcs.xls Impaired waterbody (303(d)) list, with potential sources (.xls)]<br />
**[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/table_of_contents.shtml#r3 New or revised fact sheets for Region 3 (Central Coast region)]<br />
**[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/miscellaneous_changes_report.shtml#r3 Miscellaneous changes for the Central Coast region]<br />
**[http://www.waterboards.ca.gov/water_issues/programs/tmdl/integrated2010.shtml Maps, data download, and other materials (2010)]<br />
**2010 listings by category (see [[#Summary of listing categories | Summary of listing categories]]):<br />
***[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/category2_report.shtml Category 2]<br />
***[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/category3_report.shtml Category 3]<br />
***[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/category4a_report.shtml Category 4A]<br />
***[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/category4b_report.shtml Category 4B]<br />
***[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/category5_report.shtml Category 5]<br />
<br />
==Central Coast TMDL Projects==<br />
<br />
====TMDL Projects Currently in Development (2015-2016)====<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/carpinteria_marsh/index.shtml Carpinteria Salt Marsh] (nutrients)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/pajaro/nutrients/index.shtml Pajaro River] (nutrients)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/pinto_lake/index.shtml Pinto Lake catchment] (harmful algal blooms)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/santa_maria/salts/index.shtml Santa Maria River] (salts)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/santa_ynez/nutrient/index.shtml Santa Ynez River] (nutrients)<br />
<br />
==References==<br />
<br />
<references/><br />
<br />
==See also==<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[TMDL]]<br />
*[[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
* [[Monterey Bay Area TMDL Listings | Table of 303d Listed Waters in Monterey Bay Region]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[TMDL for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[TMDL for Chlorpyrifos and Diazinon in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Monterey Bay Area TMDL Listings| Table of 303d Listed Waters in Monterey Bay Region]]<br />
* [[ENVS 560/L Watershed Systems]] class<br />
* [[Lower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress]]<br />
<br />
==Disclaimer==<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/TMDLs_in_the_Monterey_Bay_Region_of_CaliforniaTMDLs in the Monterey Bay Region of California2016-04-11T17:24:17Z<p>Kaitlync: /* Monterey Bay area reports and listings, 2010-2012 */</p>
<hr />
<div>This page provides links to documents relating to [[303d]] listings and [[Total Maximum Daily Load]] (TMDL) plans in [[California's Central Coast Region]]. The page was created by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
==Background==<br />
:''Main article: [[TMDL]]''<br />
<br />
Under 1987 provisions (section 304 (1)) to the [[Clean Water Act]] of 1972, states must identify and report all water bodies which do not meet [[water quality]] or [[beneficial use]] standards. Those impaired (polluted) water bodies not meeting water quality standards must be placed on the [[303d list]]. <br />
<br />
States must submit updated lists every two years. Along with identification of impaired water bodies, states must also identify stressors causing the impairment (i.e. pollutants), which are also identified on the [[303d list]]. A remediation plan must then be developed and implemented for each impaired water body listed. <br />
<br />
These plans are known as total maximum daily loads (TMDLs). [[TMDL]]s are used to define and achieve a total maximum daily load for each pollutant causing impairment within a water body. The list also identifies where a TMDL has been approved by the [[Environmental Protection Agency]] (EPA) and implementation is available, but water quality standards have not yet been met, or an action other than a TMDL is being used to address the issue.<br />
<br />
===Summary of listing categories===<br />
The CCRWQCB has assigned grouped 303(d) listings into the following categories. Only categories 4A, 4B, and 5 are included in the 303(d) list.<ref>[[CCRWQCB|Central Coast Regional Water Quality Control Board]]. 2009. Clean water act sections 305(b) and 303(d) integrated report for the Central Coast region. Public review draft April. http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/2008_0409_draft_integrated_report.pdf</ref><br />
<br />
* Category 1. All core uses are supported;<br />
* Category 2. At least one core use is supported;<br />
* Category 3. Insufficient information exists to make a determination;<br />
* Category 4A. At least one core use is not supported, however "a TMDL has been developed and approved by USEPA and is reasonably expected to result in the attainment of the water quality standard within a reasonable, specified time frame (p.10, CCRWQCB)." <br />
* Category 4B. At least one core use is not supported, however "an existing regulatory program is reasonably expected to result in the attainment of the water quality standard within a reasonable, specified timeframe (p.10, CCRWQCB)."<br />
* Category 5. At least one core use is not supported. A TMDL needs to be developed.<br />
<br />
==Central Coast 303d list documents==<br />
The [[303d list]] for the Central Coast region of California (Region 3) is maintained by the [[Central Coast Regional Water Quality Control Board]]. The 2006 303(d) list for the Central Coast region is available as a .pdf or .xls file<ref>CCRWQCB. 2006. 2006 CWA Section 303(d) List of Water Quality Limited Segments Requiring TMDLs (Central Coast Region). http://www.waterboards.ca.gov/water_issues/programs/tmdl/docs/303dlists2006/epa/r3_06_303d_reqtmdls.pdf </ref><ref>CCRWQCB. 2006. List of Water Quality Limited Segments Requiring TMDLs (Central Coast Region) http://www.waterboards.ca.gov/water_issues/programs/tmdl/docs/303dlists2006/epa/state_06_303dlist.xls></ref>. The 2010 303(d) statewide list is available as an .xls file<ref>CCRWQCB. 2010. Combined California 2010 303(d) list with potential sources. http://maps.waterboards.ca.gov/webmap/303d/files/2010_USEPA_approv_303d_List_Final_122311wsrcs.xls</ref> but is not available as a Central Coast-specific document as of March 2014. The 2012 303(d) statewide list was approved by the EPA on July 30, 2015 and is available via an [http://www.waterboards.ca.gov/water_issues/programs/tmdl/integrated2012.shtml integrated report] on the [[State Water Resources Control Board]] website. Although there was some Central Coast data not included in the 2012 Integrated Report, and in those cases, decisions were carried over from the 2010 list.<br />
<br />
<br />
====Monterey Bay area reports and listings, 2015====<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/ag_waivers/docs/no_co_characterization%20rpt_06012015_final.pdf Northern Counties Groundwater Characterization, Salinas Valley, Pajaro Valley and Gilroy‐Hollister Valley]<br />
<br />
====Monterey Bay area reports and listings, 2010-2012====<br />
<br />
* [http://www.waterboards.ca.gov/centralcoast/board_info/agendas/2011/march/Item_14/14_att7.pdf Water Quality Conditions in the Central Coast Region Related to Agricultural Discharges]<br />
Please see the following pages for information on 303(d) listed waterbodies and their impairments in the Monterey Bay region.<br />
*[[Monterey Bay Area TMDL Listings]] (table)<br />
*[[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]] (list)<br />
*[[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
<br />
====Central Coast reports and listings, 2006-2008====<br />
<br />
* From the [http://www.swrcb.ca.gov/rwqcb3 CCRWQCB web site], [http://www.swrcb.ca.gov/rwqcb3/water_issues/programs/tmdl/index.shtml TMDL program], [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d_list.shtml 303d-list page]:<br />
** [http://www.waterboards.ca.gov/water_issues/programs/tmdl/docs/303dlists2006/epa/r3_06_303d_reqtmdls.pdf Impaired waterbody (303d) list (.pdf)].<br />
** [http://www.waterboards.ca.gov/water_issues/programs/tmdl/docs/303dlists2006/epa/state_06_303dlist.xls Impaired waterbody (303d) list (.xls)]<br />
** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/2008_0409_draft_integrated_report.pdf Clean Water Act Sections 305(b) and 303(d) Integrated Report for the Central Coast Region] (approved 2009)<br />
** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_a.pdf Recommended changes since the 2006 list]<br />
** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_f.shtml 2008 New or Revised Fact Sheets for the Central Coast region]<br />
** 2008 listings by category (see [[#Summary of listing categories | Summary of listing categories]]):<br />
*** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_b.shtml Category 2]<br />
*** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_c.shtml Category 3]<br />
*** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_d.shtml Category 4A]<br />
*** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_e.shtml Category 5]<br />
<br />
<br />
====Statewide listings including the Central Coast, 2010====<br />
<br />
*From the [http://www.waterboards.ca.gov/water_issues/programs/tmdl/integrated2010.shtml State Water Resources Control Board 2010 Integrated Report] website:<br />
**[http://maps.waterboards.ca.gov/webmap/303d/files/2010_USEPA_approv_303d_List_Final_122311.xls Impaired waterbody (303(d)) list, without potential sources (.xls)]<br />
**[http://maps.waterboards.ca.gov/webmap/303d/files/2010_USEPA_approv_303d_List_Final_122311wsrcs.xls Impaired waterbody (303(d)) list, with potential sources (.xls)]<br />
**[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/table_of_contents.shtml#r3 New or revised fact sheets for Region 3 (Central Coast region)]<br />
**[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/miscellaneous_changes_report.shtml#r3 Miscellaneous changes for the Central Coast region]<br />
**[http://www.waterboards.ca.gov/water_issues/programs/tmdl/integrated2010.shtml Maps, data download, and other materials (2010)]<br />
**2010 listings by category (see [[#Summary of listing categories | Summary of listing categories]]):<br />
***[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/category2_report.shtml Category 2]<br />
***[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/category3_report.shtml Category 3]<br />
***[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/category4a_report.shtml Category 4A]<br />
***[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/category4b_report.shtml Category 4B]<br />
***[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/category5_report.shtml Category 5]<br />
<br />
==Central Coast TMDL Projects==<br />
<br />
====TMDL Projects Currently in Development (2015-2016)====<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/carpinteria_marsh/index.shtml Carpinteria Salt Marsh] (nutrients)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/pajaro/nutrients/index.shtml Pajaro River] (nutrients)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/pinto_lake/index.shtml Pinto Lake catchment] (harmful algal blooms)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/santa_maria/salts/index.shtml Santa Maria River] (salts)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/santa_ynez/nutrient/index.shtml Santa Ynez River] (nutrients)<br />
<br />
<br />
==References==<br />
<br />
<references/><br />
<br />
==See also==<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[TMDL]]<br />
*[[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
* [[Monterey Bay Area TMDL Listings | Table of 303d Listed Waters in Monterey Bay Region]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[TMDL for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[TMDL for Chlorpyrifos and Diazinon in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Monterey Bay Area TMDL Listings| Table of 303d Listed Waters in Monterey Bay Region]]<br />
* [[ENVS 560/L Watershed Systems]] class<br />
* [[Lower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress]]<br />
<br />
==Disclaimer==<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/TMDLs_in_the_Monterey_Bay_Region_of_CaliforniaTMDLs in the Monterey Bay Region of California2016-04-11T17:21:25Z<p>Kaitlync: /* Central Coast 303d list documents */</p>
<hr />
<div>This page provides links to documents relating to [[303d]] listings and [[Total Maximum Daily Load]] (TMDL) plans in [[California's Central Coast Region]]. The page was created by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
==Background==<br />
:''Main article: [[TMDL]]''<br />
<br />
Under 1987 provisions (section 304 (1)) to the [[Clean Water Act]] of 1972, states must identify and report all water bodies which do not meet [[water quality]] or [[beneficial use]] standards. Those impaired (polluted) water bodies not meeting water quality standards must be placed on the [[303d list]]. <br />
<br />
States must submit updated lists every two years. Along with identification of impaired water bodies, states must also identify stressors causing the impairment (i.e. pollutants), which are also identified on the [[303d list]]. A remediation plan must then be developed and implemented for each impaired water body listed. <br />
<br />
These plans are known as total maximum daily loads (TMDLs). [[TMDL]]s are used to define and achieve a total maximum daily load for each pollutant causing impairment within a water body. The list also identifies where a TMDL has been approved by the [[Environmental Protection Agency]] (EPA) and implementation is available, but water quality standards have not yet been met, or an action other than a TMDL is being used to address the issue.<br />
<br />
===Summary of listing categories===<br />
The CCRWQCB has assigned grouped 303(d) listings into the following categories. Only categories 4A, 4B, and 5 are included in the 303(d) list.<ref>[[CCRWQCB|Central Coast Regional Water Quality Control Board]]. 2009. Clean water act sections 305(b) and 303(d) integrated report for the Central Coast region. Public review draft April. http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/2008_0409_draft_integrated_report.pdf</ref><br />
<br />
* Category 1. All core uses are supported;<br />
* Category 2. At least one core use is supported;<br />
* Category 3. Insufficient information exists to make a determination;<br />
* Category 4A. At least one core use is not supported, however "a TMDL has been developed and approved by USEPA and is reasonably expected to result in the attainment of the water quality standard within a reasonable, specified time frame (p.10, CCRWQCB)." <br />
* Category 4B. At least one core use is not supported, however "an existing regulatory program is reasonably expected to result in the attainment of the water quality standard within a reasonable, specified timeframe (p.10, CCRWQCB)."<br />
* Category 5. At least one core use is not supported. A TMDL needs to be developed.<br />
<br />
==Central Coast 303d list documents==<br />
The [[303d list]] for the Central Coast region of California (Region 3) is maintained by the [[Central Coast Regional Water Quality Control Board]]. The 2006 303(d) list for the Central Coast region is available as a .pdf or .xls file<ref>CCRWQCB. 2006. 2006 CWA Section 303(d) List of Water Quality Limited Segments Requiring TMDLs (Central Coast Region). http://www.waterboards.ca.gov/water_issues/programs/tmdl/docs/303dlists2006/epa/r3_06_303d_reqtmdls.pdf </ref><ref>CCRWQCB. 2006. List of Water Quality Limited Segments Requiring TMDLs (Central Coast Region) http://www.waterboards.ca.gov/water_issues/programs/tmdl/docs/303dlists2006/epa/state_06_303dlist.xls></ref>. The 2010 303(d) statewide list is available as an .xls file<ref>CCRWQCB. 2010. Combined California 2010 303(d) list with potential sources. http://maps.waterboards.ca.gov/webmap/303d/files/2010_USEPA_approv_303d_List_Final_122311wsrcs.xls</ref> but is not available as a Central Coast-specific document as of March 2014. The 2012 303(d) statewide list was approved by the EPA on July 30, 2015 and is available via an [http://www.waterboards.ca.gov/water_issues/programs/tmdl/integrated2012.shtml integrated report] on the [[State Water Resources Control Board]] website. Although there was some Central Coast data not included in the 2012 Integrated Report, and in those cases, decisions were carried over from the 2010 list.<br />
<br />
<br />
====Monterey Bay area reports and listings, 2015====<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/ag_waivers/docs/no_co_characterization%20rpt_06012015_final.pdf Northern Counties Groundwater Characterization, Salinas Valley, Pajaro Valley and Gilroy‐Hollister Valley]<br />
<br />
====Monterey Bay area reports and listings, 2010-2012====<br />
<br />
Please see the following pages for information on 303(d) listed waterbodies and their impairments in the Monterey Bay region.<br />
*[[Monterey Bay Area TMDL Listings]] (table)<br />
*[[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]] (list)<br />
*[[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
<br />
<br />
====Central Coast reports and listings, 2006-2008====<br />
<br />
* From the [http://www.swrcb.ca.gov/rwqcb3 CCRWQCB web site], [http://www.swrcb.ca.gov/rwqcb3/water_issues/programs/tmdl/index.shtml TMDL program], [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d_list.shtml 303d-list page]:<br />
** [http://www.waterboards.ca.gov/water_issues/programs/tmdl/docs/303dlists2006/epa/r3_06_303d_reqtmdls.pdf Impaired waterbody (303d) list (.pdf)].<br />
** [http://www.waterboards.ca.gov/water_issues/programs/tmdl/docs/303dlists2006/epa/state_06_303dlist.xls Impaired waterbody (303d) list (.xls)]<br />
** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/2008_0409_draft_integrated_report.pdf Clean Water Act Sections 305(b) and 303(d) Integrated Report for the Central Coast Region] (approved 2009)<br />
** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_a.pdf Recommended changes since the 2006 list]<br />
** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_f.shtml 2008 New or Revised Fact Sheets for the Central Coast region]<br />
** 2008 listings by category (see [[#Summary of listing categories | Summary of listing categories]]):<br />
*** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_b.shtml Category 2]<br />
*** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_c.shtml Category 3]<br />
*** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_d.shtml Category 4A]<br />
*** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_e.shtml Category 5]<br />
<br />
<br />
====Statewide listings including the Central Coast, 2010====<br />
<br />
*From the [http://www.waterboards.ca.gov/water_issues/programs/tmdl/integrated2010.shtml State Water Resources Control Board 2010 Integrated Report] website:<br />
**[http://maps.waterboards.ca.gov/webmap/303d/files/2010_USEPA_approv_303d_List_Final_122311.xls Impaired waterbody (303(d)) list, without potential sources (.xls)]<br />
**[http://maps.waterboards.ca.gov/webmap/303d/files/2010_USEPA_approv_303d_List_Final_122311wsrcs.xls Impaired waterbody (303(d)) list, with potential sources (.xls)]<br />
**[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/table_of_contents.shtml#r3 New or revised fact sheets for Region 3 (Central Coast region)]<br />
**[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/miscellaneous_changes_report.shtml#r3 Miscellaneous changes for the Central Coast region]<br />
**[http://www.waterboards.ca.gov/water_issues/programs/tmdl/integrated2010.shtml Maps, data download, and other materials (2010)]<br />
**2010 listings by category (see [[#Summary of listing categories | Summary of listing categories]]):<br />
***[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/category2_report.shtml Category 2]<br />
***[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/category3_report.shtml Category 3]<br />
***[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/category4a_report.shtml Category 4A]<br />
***[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/category4b_report.shtml Category 4B]<br />
***[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/category5_report.shtml Category 5]<br />
<br />
==Central Coast TMDL Projects==<br />
<br />
====TMDL Projects Currently in Development (2015-2016)====<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/carpinteria_marsh/index.shtml Carpinteria Salt Marsh] (nutrients)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/pajaro/nutrients/index.shtml Pajaro River] (nutrients)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/pinto_lake/index.shtml Pinto Lake catchment] (harmful algal blooms)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/santa_maria/salts/index.shtml Santa Maria River] (salts)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/santa_ynez/nutrient/index.shtml Santa Ynez River] (nutrients)<br />
<br />
<br />
==References==<br />
<br />
<references/><br />
<br />
==See also==<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[TMDL]]<br />
*[[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
* [[Monterey Bay Area TMDL Listings | Table of 303d Listed Waters in Monterey Bay Region]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[TMDL for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[TMDL for Chlorpyrifos and Diazinon in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Monterey Bay Area TMDL Listings| Table of 303d Listed Waters in Monterey Bay Region]]<br />
* [[ENVS 560/L Watershed Systems]] class<br />
* [[Lower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress]]<br />
<br />
==Disclaimer==<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Lower_Salinas_River_Watershed_Nutrient_TMDL_-_Implementation_and_Monitoring_ProgressLower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress2016-04-11T17:15:05Z<p>Kaitlync: /* Links */</p>
<hr />
<div>A [[Watershed Issues|watershed-related topic]] examined by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
[[Image:Lowsal nut TMDL.JPG|450px|thumb|Image 1. Lower Salinas River Watershed: Nutrient TMDL Project Area]]<br />
<br />
= Summary =<br />
<br />
In order to achieve water quality standards for multi-use water bodies, the [[EPA]] implemented a list of 303(d) listed rivers under [[Section 303(d)]] of the [[Clean Water Act]] (CWA). [[Total Maximum Daily Load (TMDL)]] is the criteria for this list.0<br />
<br />
The Lower Salinas River Watershed (LSRW) is listed for Nitrogen Compounds and Orthophosphate. This was first approved March 14, 2013 via a vote by the [[Central Coast Water Board]] to amend the [[Water Quality Control Plan for the Central Coastal Basin]]. At this point, 72 monitoring sites were established. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page. Lower Salinas River Watershed water quality is monitored through the [[Central Coast Ambient Monitoring Program]] (CCAMP).<br />
<br />
=Background=<br />
Pollution of surface and groundwaters from nitrate and unionized ammonia has been a long standing problem for the lower Salinas Valley. Monitoring data in the Lower Salinas River Watershed indicate excessive levels of nitrate, unionized ammonia, and associated nutrient-related problems including, excessive orthophosphate, low dissolved oxygen, toxicity and excess algal biomass.<ref name'"RWQCB Lower Salinas TMDL Staff report"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_staffrpt.pdf RWQCB Lower Salinas River Watershed Nutrient TMDL Staff Report]</ref> Nitrate loading from the Salinas River has been identified as a potential driver of algal blooms occurring immediately after "first flush" events, the first rain after a period of drought <ref name="Ag order"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/ag_waivers/docs/ag_order/final_agorder_atta_032612.pdf Conditional waiver of Waste Discharge Requirements for Discharges from Irrigated Lands]</ref>. The California [[Central Coast Water Board]] is required under the Federal and State [[Clean Water Act]] to protect and regulate beneficial uses of these waters. The Lower Salinas Valley Watershed has a wide range of beneficial uses which are not being supported including aquatic habitat, drinking water supply, groundwater recharge, agricultural supply, and water contact recreation. Water Supply and aquatic habitat constitute the most sensitive applicable beneficial uses requiring the most stringent water quality standards.<ref name'"Lower Salinas Nutrient TMDL Factsheet1"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/sal_nuts_tmdl_factsheet1_final.pdf TMDL for Nitrogen Compounds and Orthophosphate in the Lower Salinas River Watershed Factsheed #1]</ref> Development of the Lower Salinas Valley Watershed Nutrient TMDL was intended to reduce and eventually eradicate nitrate pollution for the purpose of human health, the Central Coast Water Board's top priority. The numeric targets, report summaries and further information regarding the LSRW can be found at the [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]] page.<br />
<br />
= Location =<br />
<br />
Comprehensive list for the Monterey Bay region: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]] and [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]. <br />
<br />
The geographic scope of the TMDL encompasses approximately 405 square miles in the Lower Salinas Valley. Agriculture is the dominant land use in the watershed although urbanized areas are increasing.<br />
<br />
The Lower Salinas River Watershed Nutrient TMDL applies to the following [[303d]] listed water bodies:<br />
*Lower Salinas River & Tributaries:<br />
**[[Blanco Drain]]<br />
**Esperanza Creek<br />
**Chualar Creek<br />
**Quail Creek<br />
*[[Tembladero Slough]] & Tributaries:<br />
**Merrit Ditch<br />
**Reclamation Canal<br />
**Alisal Creek<br />
**Alisal Slough<br />
**Espinosa Slough<br />
**Santa Rita Creek<br />
**Gabilan Creek<br />
**Natividad Creek<br />
*Old Salinas River<br />
*[[Moro Cojo Slough]]<br />
<br />
=Action Taken since TMDL Approval=<br />
<br />
==Initial Implementation==<br />
The TMDL is implemented through the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] which clearly requires dischargers implement, and where appropriate update or improve, management practices, which may include local or regional control, treatment practices and changes in farming practices to control discharges, meet water quality standards and achieve compliance. If the discharer fails to address water quality they may be subject to progressive enforcement and possible monetary liability. <ref name="Ag order"/> More information regarding dischagers requirements and expectations can be found on the [[Conditional Waiver of Waste Discharge Requirements for Discharges from Irrigated Lands (Ag Order)]] page.<br />
<br />
==Water Quality Monitoring==<br />
The [[Central Coast Regional Water Quality Control Board (CCRWQCB)]] has designated [[Central Coast Water Quality Preservation, Inc (Preservation, Inc.)]] as the main non-profit entity to conduct the Cooperative Monitoring Program in compliance with the Ag Order (Order no. R3-2012-0011). Under this order every enrolled grower may conduct their own surface water quality monitoring, or participate in the Cooperative Monitoring Program (CMP). Over 99% of growers have opted to participate in the Central Coast Ambient Monitoring Program (CCAMP). <br />
<br />
The Central Coast Ambient Monitoring Program (CCAMP) conducts monthly monitoring in the [[Lower Salinas Watershed]] in order to conduct trend analysis and detect emerging water quality problems.<br />
<br />
===Status of Nitrate===<br />
The target TMDL for Nitrate is 10 mg/L. The Old Salinas River, at Monterey Dunes Way, is the only monitoring site in the Lower Salinas River Watershed that have shown decreasing levels of Nitrate. <br />
<br />
Salinas River at Davis Rd & Tembladero Slough at Monterey Dunes Way have shown an increasing trend of Nitrate. <br />
<br />
[[File:LowersalinasRiver NitrateGraph.JPG|700px|thumb|center|Image 2. Levels of Nitrate at all [[CCAMP]] monitoring sites regulated by the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of Nitrate levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough Nitrate.png|700px|thumb|center|Image 3. Time series data for Nitrate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Nitrate.png|700px|thumb|center|Image 4. Time series data for Nitrate at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas Nitrate.png|700px|thumb|center|Image 5. Time series data for Nitrate at the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Un-ionized Ammonia===<br />
The target TMDL for un-ionized ammonia is 0.025 mg/L. The majority of the water bodies in the Lower Salinas Valley have an un-iodized concentration mean bellow 0.025 mg/L. CCAMP has identified a monotonic decreasing trend of Ammonia levels at Tembladero Slough at Haro Road.<br />
<br />
Ammonia levels have decreased in the Salinas River at Chualar Bridge, the Gonzales River Road Bridge, and Chualar Creek at Chualar River Road.<br />
<br />
Ammonia levels have increased in the Old Salinas River at Monterey Dunes Way.<br />
<br />
[[File:Lowersalinasriver ammoniaGraph.JPG|700px|thumb|center|Image 6. Un-ionized Ammonia levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
[[File:Tembladero Slough Ammonia.png|700px|thumb|center|Image 7. Time series data for Un-ionoized ammonia at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Blanco Drain Ammonia.png|700px|thumb|center|Image 8. Time series data for Un-ionoized ammonia at Blanco Drain. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough Ammonia.png|700px|thumb|center|Image 9. Time series data for Un-ionoized ammonia at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
===Status of Orthophosphate===<br />
The target TMDL concentration for orthophosphate is 0.3 mg/L. CCAMP has identified a monotonic decreasing trend of Orthophosphate levels at Tembladero Slough at Haro Road.<br />
<br />
Over the past year, Orthophosphate levels have decreased in the Salinas River at Chualar Bridge and Chualar Creek at Chualar River Road.<br />
<br />
Orthophosphate levels have increased in the past year in the Old Salinas River at Monterey Dunes Way. <br />
<br />
[[File:Lowersalinasriver PGraph.JPG|700px|thumb|center|Image 10. Orthophosphate levels at all [[CCAMP]] monitoring sites regulated under the Lower Salinas River Watershed Nutrient TMDL. Geometric mean of un-ionized ammonia levels in water bodies regulated by the Lower Salinas River Watershed Nutrient TMDL, data retrieved from [http://www.ccamp.us/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator].]]<br />
<br />
Examples of time series data for CCAMP monitoring sites furthest downstream in the Lower Salinas River Watershed.<br />
[[File:Tembladero Slough P.png|700px|thumb|center|Image 11. Time series data for Orthophosphate at Tembladero Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:Espinosa Slough P.png|700px|thumb|center|Image 12. Time series data for Orthophosphate at Espinosa Slough. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
[[File:LowerSalinas P.png|700px|thumb|center|Image 13. Time series data for Orthophosphate in the Lower Salinas River. Data retrieved from: [http://www.ccamp.info/ca/view_data.php?org_id=rb3#pagetop CCAMP Central Coast Data Navigator]: Basic Water Quality.]]<br />
<br />
=Links=<br />
<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[Total Maximum Daily Load for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Load for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Total Maximum Daily Loads for Chlorpyrifos and Diazinon in Lower Salinas River Watershed in Monterey County, California]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[Regional regulatory approaches to agricultural runoff in California]]<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Clean Water Act]]<br />
* [[NPDES|National Pollution Discharge Elimination System]]<br />
* [[Porter-Cologne Act]]<br />
* [[Central Coast Water Quality Preservation, Inc. (CCWQPI)]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
* [[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
<br />
= References =<br />
<br />
<references/><br />
<br />
= Disclaimer =<br />
<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Monterey_Bay_Area_TMDL_Listings_-_Priorities,_Progress,_and_DocumentsMonterey Bay Area TMDL Listings - Priorities, Progress, and Documents2016-04-11T17:14:29Z<p>Kaitlync: /* Links */</p>
<hr />
<div>This page on the Monterey Bay Area [[TMDL listings]] is intended to provide an overview of agency determinations for the various listed waterbodies in the [[Monterey Bay]]. This page was created by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
:''See also: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]]''<br />
<br />
==Monterey Bay Area Listings==<br />
<br />
:''See also: [[TMDLs in the Monterey Bay Region of California#Summary of listing categories | Summary of listing categories]]''<br />
<br />
====Pajaro River Watershed====<br />
Impaired water bodies listed downstream to upstream & north to south.<br />
<br />
'''Watsonville Slough'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Low Dissolved Oxygen|| 2010 || Agriculture, Removal of Riparian vegetation, Urban runoff/storm sewers || 6.2 || Estimated: 2021 || TBD<br />
|-<br />
|Pathogens || 1996 || Agriculture, Collection system failure, Grazing, Landfills, Natural sources, Pasture grazing-riparian and/or upland, Urban runoff/storm sewers ||6.2 || July 19, 2007 || Based on a minimum of no less than 5 samples: Fecal coliform shall not exceed a log mean of 200MPN/100mL, and 10% of total samples must not exceed 400MPN/100mL <Ref name="Watsonville Slough Pathogen TMDL"> [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=32760&p_report_type= Watsonville Slough Pathogen TMDL]</ref><br />
|-<br />
|Pesticides || 1996 || Agriculture, Agriculture-irrigation tailwater, Agriculture storm runoff, Irrigated crop production, nonpoint source || 6.2 || Estimated: 2021 || TBD<br />
|-<br />
|Turbidity || 2010 || Agriculture, Removal of riparian vegetation, Urban runoff/storm sewers || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
'''Beach Road Ditch'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Low Dissolved Oxygen|| 2010 || Agriculture, Removal of Riparian vegetation || 0.78 || Estimated: 2021 || TBD<br />
|-<br />
|Nitrate || 2010 || Agriculture, Removal of Riparian vegetation || 0.78 || Estimated: 2021 || TBD<br />
|-<br />
|Turbidity || 2010 || Agriculture, Removal of Riparian vegetation || 0.78 || Estimated: 2021 || TBD<br />
|-<br />
|pH || 2010 || Agriculture || 0.78 || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
'''Pajaro River'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Boron || 2006 || Agriculture, Other urban runoff, Saltwater intrustion, Source unknown || 32 || Estimated: 2021 || TBD<br />
|-<br />
|Chlordane || 2010 || Source unknown || 32 || Estimated: 2021 || TBD<br />
|-<br />
|Chloride || 2010 || Agriculture, Natural sources, Other urban runoff, Saltwater intrusion || 32 || Estimated: 2021 || TBD<br />
|-<br />
|Chlorpyrifos || 2010 || Agriculture, other urban runoff || 32 || November 12, 2013 || 1-hour average of Chlorpyrifos must not exceed 0.025ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.015ppb <ref name= "Pajaro River C&D TMDL"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/pajaro/pesticides/paj_op_tmdl_staff_report.pdf Pajaro River watershed Chlorpyrifos and Diazinon TMDL]</ref><br />
|-<br />
|DDD (Dichlorodiphenyldichloroethane) || 2010 || Source unknown || 32 || Estimated: 2013 || TBD<br />
|-<br />
| Dieldrin || 2010 || Source Unknown || 32 || Estimated 2021 || TBD<br />
|-<br />
|Escherichia coli (E. Coli) || 2010 || Collection system failure, natural sources, onsite wastewater systems, pasture grazing-riparian and/or upland, transient encampments, urban runoff/storm sewers || 32 || August 3, 2010 || Must not exceed 235 MPN/100mL <ref name="Pajaro River Fecal Coliform TMDL"> [https://ofmpub.epa.gov/waters10/attains_impaired_waters.show_tmdl_document?p_tmdl_doc_blobs_id=73380 Pajaro River Fecal Coliform TMDL]</ref><br />
|-<br />
|Fecal Coliform || 2002 || Collection system failure, natural sources, onsite wastewater systems, pasture grazing-riparian and/or upland, transient encampments, urban runoff/storm sewers || 32 || August 3, 2010 || Must not exceed 400 MPN/100mL <ref name="Pajaro River Fecal Coliform TMDL"> [https://ofmpub.epa.gov/waters10/attains_impaired_waters.show_tmdl_document?p_tmdl_doc_blobs_id=73380 Pajaro River Fecal Coliform TMDL]</ref><br />
|-<br />
|Low Dissolved Oxygen || 2010 || Agriculture, Grazing-related sources, Other urban runoff, Removal of riparian vegetation, Unknown nonpoint source || 32 || Estimated: 2021 || TBD<br />
|-<br />
|Nitrate || 2006 || Agriculture, Urban runoff/Storm sewers || 32 || October 13, 2006 || Nitrate must not exceed 10 mg/L and 30-day mean must not exceed 5mg/L <ref name="Pajaro River Nitrate TMDL"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/pajaro/nitrate/11112_r3_pajaroriver_nitrate.pdf Pajaro River Nitrate TMDL] </ref><br />
|-<br />
|Nutrients || 1996 || Agriculture Return flows, agriculture, agriculture-irrigation tailwater, agriculture storm runoff, agriculture subsurface drainage, channelization, irrigated crop production, nonpoint source, removal of riparina vegetation, urban runoff/storm sewers, wastewater - land disposal || 32 || July 30, 2015 || '''Dry Season:''' Nitrate < 1.8 to 3.9 mg/L, Total N < 1.1 mg/L to 2.1 mg/L, Orthophosphate < 0.4 to 0.14 mg/L '''Wet Season:''' Nitrate < 8 mg/L, Orthophosphate < 0.3 mg/L '''Year Round:''' Nitrate < 10 mg/L <ref name="Pajaro River Nutrient TMDL> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/pajaro/nutrients/tmdl_report_approved.pdf Pajaro River Nutrient TMDL]</ref><br />
|-<br />
|PCBs (Polychlorinated biphenyls) || 2010 || Source unknown || 32 || Estimated: 2021 || TBD<br />
|-<br />
|Sediment/Siltation || 1996 || Agriculture, Grazing related sources, Highway/road/bridge runoff, Silviculture, Streambank modification/destabilization, Surface mining, Urban runoff/storm sewers || 32 || May 3, 2007 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/pajaro/sediment/paj_sed_tmdl_project_report.pdf Pajaro River Sediment Project report] Figure 4.4, Page 20<br />
|-<br />
|Sodium || 2010 || Agriculture, Natural sources, Other urban runoff, Saltwater intrusion, Unknown nonpoint source || 32 || Estimated: 2021 || TBD<br />
|-<br />
|Turbidity || 2010 || Agriculture, Grazing, Other urban runoff, Removal of riparian vegetation || 32 || Estimated: 2021 || TBD<br />
|-<br />
|pH || 2010 || Unknown || 32 || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
====Bolsa Neuva Watershed====<br />
Impaired water bodies listed downstream to upstream, North to south<br />
<br />
'''Moss Landing Harbor'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Chlorpyrifos || 2010 || Agriculture, Grazing Related Sources, Other urban runoff || 79 ||October 7, 2011 || 1-hour average of Chlorpyrifos must not exceed 0.025ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.015ppb<ref name="Lower Salinas C&D TMDL"> [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41433&p_report_type= LOWER SALINAS RIVER WATERSHED CHLORPYRIFOS AND DIAZINON TMDLS]</ref><br />
|-<br />
|Diazinon || 2010 || Agriculture || 79 || October 7, 2011 || 1-hour average of Diazinon must not exceed 0.16 ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.10ppb <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Low Dissolved Oxygen || 2010 || Source unknown || 79 || October 13, 2015 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrient TMDL]<br />
|-<br />
|Nickel || 2010 || Agriculture, Dredging, Marinas and Recreational boating, Natural sources, Other urban runoff, Unknown sources || 79 || Estimated: 2021 || TBD<br />
|-<br />
|Pathogens || 1992 || Agriculture, Boat discharges/vessel wastes, nonpoint source || 79 || Estimated: 2021 || TBD<br />
|-<br />
|Pesticides || 1992 || Agriculture, Irrigated and specialty crop production || 79 || Estimated: 2021 || TBD<br />
|-<br />
|Sediment Toxicity || 2010 || Agriculture, Boatyards, Dredging, Grazing related sources, marinas and recreational boating, Other urban runoff || 79 || Estimated: 2021 || TBD<br />
|-<br />
|Sedimentation/Silatation || 1996 || Agriculture, agriculture-storm runoff, channel erosion, dredging, erosion/siltation, hydromodification, irrigated crop production, nonpoint source || 79 || Estimated: 2021 || TBD<br />
|-<br />
|pH || 2010 || Source Unknown || 79 || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
'''Bennett Slough'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Chlorophyll-a || 2010 || Source Unknown || 1.9 || Estimated: 2021 || TBD, Also See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL] <br />
|-<br />
|Low Dissolved Oxygen || 2010 || Source Unknown || 1.9 || Estimated: 2021 || TBD<br />
|-<br />
|pH || 2010 || Source Unknown || 1.9 || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
'''Elkhorn Slough'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Low Dissolved Oxygen || 2010 || Agriculture, Grazing related sources, Natural sources, Urban runoff/storm sewers || 2034 || Estimated: 2021 || TBD<br />
|-<br />
|Pesticides || 1990 || Agriculture return flows, agriculture, agriculture-storm runoff, contaminated sediments, erosion/siltation, irrigated crop production, nonpoint source || 2034 || Estimated: 2021 || TBD<br />
|-<br />
|Sedimentation/Siltation || 1996 || Agriculture, agriculture-storm runoff, channel erosion, irrigated crop production, nonpoint source || 2034 || Estimated: 2021 || TBD<br />
|-<br />
|Total Coliform || 2010 || Source unknown || 2034 || Estimated: 2021 || TBD<br />
|-<br />
|pH || 2010 || Agriculture, grazing related sources, natural sources, urban runoff/storm sewers || 2034 || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
'''Watsonville Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|E. Coli || 2010 || Agriculture, Grazing related sources, Natural Sources || 5.1 || Estimated: 2021 || TBD<br />
|-<br />
|Fecal Coliform || 2010 || Agriculture, Grazing related sources, Natural Sources || 5.1 || Estimated: 2021 || TBD<br />
|-<br />
|Low Dissolved Oxygen || 2010 || Agriculture, Grazing related sources, Groundwater loadings, Removal of riparian vegetation || 5.1 || Estimated: 2021 || TBD<br />
|-<br />
|Nitrate || 2010 || Agriculture, Grazing related sources, Groundwater loadings, Removal of riparian vegetation || 5.1 || Estimated: 2021 || TBD<br />
|-<br />
|pH || 2010 || Agriculture, Grazing related sources, Groundwater loadings, Removal of riparian vegetation || 5.1 || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
'''Carneros Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Ammonia, Unionized || 2006 || Source Unknown || 12 || Estimated: 2021 || TBD<br />
|-<br />
|Chlorophyll-a || 2010 || Agriculture || 12 || Estimated: 2021 || TBD<br />
|-<br />
|Fecal Coliform || 2010 || Agriculture, natural sources || 12 || Estimated: 2021 || TBD<br />
|-<br />
|Low Dissolved Oxygen ||2010 || Agriculture || 12 || Estimated: 2021 || TBD<br />
|-<br />
|Turbidity || 2010 || Agriculture, Source unknown || 12 || Estimated: 2021 || TBD<br />
|-<br />
|pH || 2010 || Agriculture, Source unknown || 12 || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
'''Alamo Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Fecal Coliform, 5A||2002|| '''2010:''' Agriculture, Grazing, Natural Sources <ref name="Alamo Creek 2010 TMDL"> [http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/00947.shtml#22636 2010 Integrated Report Alamo Creek Impairments]</ref> '''2012:''' Source Unknown || 7.8 || Est. 2021 || TBD<br />
|}<br />
<br />
====Salinas Valley Watershed====<br />
Impaired water bodies in the Salinas Watershed listed downstream to upstream & north to south.<br />
<br />
<br />
'''Moro Cojo Slough'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Ammonia (Unionized), 5A|| 2006 ||Agriculture, Boat Discharges, Grazing, Unknown|| 62 || October 13, 2015|| Year Round un-ionized ammonia as N must not exceed 0.025mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|E. Coli|| 2010 || Agriculture, Boat Discharges, Grazing, Natural Sources, Unknown || 62 || TBD || Estimated 2021<br />
|-<br />
|Low Dissolved Oxygen|| 2002 || Source Unknown || 62 || TBD || Estimated 2021<br />
|-<br />
|Pesticides|| 2002 || Agriculture, Grazing, Riparian Vegetation Removal, Unknown || 62 || Estimated 2021 || No data since 2006<br />
|-<br />
|Sedimentation/Siltation|| 2002 || Agriculture, Construction/Land Development, Nonpoint source || 62 || Estimated 2021 || No data since 2006<br />
|-<br />
|Total Coliform|| 2010 || Source Unknown || 62 || Estimated 2021 || TBD<br />
|-<br />
| pH || 2010 || Agriculture, Boat Discharges, Grazing, Natural Sources, Removal of Riparian Vegetation, Unknown || 62 || Estimated 2021 || TBD<br />
|}<br />
<br />
'''Old Salinas River Estuary'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Nutriensts || 1992 || Agriculture, Agriculture-irrigation tailwater, irrigated crop production, nonpoint source || 16 || October 13, 2015 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrient TMDL]<br />
|-<br />
|Pesticides || 1990 || Agriculture return flows, agriculture, agriculture-irrigation tailwater, agriculture-storm runoff, irrigated crop production, nonpoint source || 16 || October 7, 2011 || Will be heard at the May 12-13, 2016 Central Coast Water Board hearing in Watsonville, also see Chlorpyrifos & Diazinon<ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|}<br />
<br />
'''Old Salinas River'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Chlorophyll-a || 2010 || Agriculture, Dredging, Other urban runoff, Removal of Riparian Vegetation || 3.8 || TBD || TMDL needed, Also See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL] <br />
|-<br />
|Chlorpyrifos || 2010 || Agriculture, Other urban runoff || 3.8 || October 7, 2011 || 1-hour average of Chlorpyrifos must not exceed 0.025ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.015ppb<br />
|-<br />
|Diazinon || 2010 || Agriculture, Other urban runoff || 3.8 || October 7, 2011 || 1-hour average of Diazinon must not exceed 0.16 ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.10ppb<br />
|-E. Coli || 2010 || Agriculture, Marinas and Recreational boating, natural sources, other urban runoff || 3.8 || Estimated: 2013 || TBD, See also [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]<br />
|-<br />
|Fecal Coliform || 2010 || Agriculture, Marinas and Recreational boating, natural sources, other urban runoff || 3.8 || January 31, 2012 || Shall not exceed an average of 200 MPN per 100mL, and 10% of samples collected may not exceed 400 MPN per 100mL based on a min of 5 samples in any 30-day period.<ref name="Lower Salinas Fecal Coliform TMDL">[https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]</ref><br />
|-<br />
|Low Dissolved Oxygen || 2010 || Agriculture, Marinas and Recreational Boating, Other Urban Runoff, Removal of Riparian Vegetation || 3.8 || October 13, 2015 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrient TMDL]<br />
|-<br />
|Nitrate || 2010 || Agriculture, Other urban runoff || 3.8 || October 13, 2015 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrient TMDL]<br />
|-<br />
|Sediment Toxicity || 2010 || Agriculture, Other urban runoff || 3.8 || Estimated: 2013 || Will be heard @ Central Coast Water Board hearing May 12-13 2016 <ref name="Salinas Sediment Toxicity TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River Watershed Sediment Toxicity TMDL]</ref><br />
|-<br />
|Turbidity || 2010 || Agriculture, Other urban runoff || 3.8 || Estimated: 2013 || TBD<br />
|-<br />
|Unknown Toxicity || 2010 || Agriculture, Other urban runoff || 3.8 || Estimated: 2013 || TBD<br />
|-<br />
|pH || 2010 || Agriculture, Other urban runoff || 3.8 || Estimated: 2013 || TBD<br />
|}<br />
<br />
'''Salinas River Lagoon (North)'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Pesticides|| 1992 || Agriculture || 197 || TBD || TBD<br />
|-<br />
|Nutrients|| 1992 || Nonpoint Source || 197 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L, Orthophosphate < 0.7 to 0.13 mg/L '''Wet Season:''' Nitrate < 8 mg/L, Orthophosphate < 0.3 mg/L '''Year Round:''' Nitrate < 10 mg/L<br />
|-<br />
|}<br />
<br />
'''Majors Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Copper || 2010 || Source unknown, Urban runoff/Storm sewers || Estimated: 2021 || TBD<br />
|-<br />
|E. Coli || 2010 || Natural Sources, Source unknown, Urban runoff/storm sewers || Estimated: 2021 || TBD<br />
|-<br />
|Lead || 2010 || Source unknown, Urban runoff/storm sewers || Estimated: 2021 || TBD<br />
|-<br />
|Zinc || 2010 || Source unknown, Urban runoff/storm sewers || Estimated: 2021 || TBD <br />
|-<br />
|}<br />
<br />
'''Blanco Drain'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Chlorpyrifos || 2010 || Agriculture, Other urban runoff || 15 || October 7, 2011 || 1-hour average of Chlorpyrifos must not exceed 0.025ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.015ppb<ref name="Lower Salinas C&D TMDL"> [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41433&p_report_type= LOWER SALINAS RIVER WATERSHED CHLORPYRIFOS AND DIAZINON TMDLS]</ref><br />
|-<br />
|Diazinon || 2010 || Agriculture || 15 || October 7, 2011 || 1-hour average of Diazinon must not exceed 0.16 ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.10ppb <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Low Dissolved Oxygen || 2010 || Agriculture, groundwater loadings || 15 || October 13, 2015 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrient TMDL]<br />
|-<br />
|Nitrate || 2010 || Agriculture, groundwater loadings || 15 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrient TMDL]</ref><br />
|-<br />
|Pesticides || 1998 || Agriculture return flows, Agriculture, Agriculture-irrigation tailwater, Agriculture storm runoff, Irrigated crop production, nonpoint source || 15 || October 7, 2011 || See Chlorpyrifos & Diazinon<ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Turbidity || 2010 || Agriculture, Removal of riparian vegetation || 15 || Estimated: 2013 || TBD<br />
|-<br />
|}<br />
<br />
'''Tembladero Slough'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Chlorophyll-a || 2010 || Agriculture, Grazing, Removal of riparian vegetation, Urban runoff/storm sewers || 5.5 || Estimated: 2013 || TBD<br />
|-<br />
|Chlorpyrifos || 2010 || Agriculture, Grazing related sources, Urban runoff/storm sewers || 5.5 || October 7, 2011 || 1-hour average of Chlorpyrifos must not exceed 0.025ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.015ppb<ref name="Lower Salinas C&D TMDL"> [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41433&p_report_type= LOWER SALINAS RIVER WATERSHED CHLORPYRIFOS AND DIAZINON TMDLS]</ref><br />
|-<br />
|Diazinon || 2010 || Agriculture, Grazing related sources, Urban runoff/storm sewers || 5.5 || October 7, 2011 || 1-hour average of Diazinon must not exceed 0.16 ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.10ppb <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Enterococcus || 2010 || Agriculture, Grazing related sources, Urban runoff/storm sewers || 5.5 || Estimated: 2013 || TBD, See Fecal Coliform<br />
|-<br />
|E. Coli || 2010 || Agriculture, Grazing related sources, Urban runoff/storm sewers, Natural sources || 5.5 || Estimated: 2013 || TBD, See Fecal Coliform<br />
|-<br />
|Fecal Coliform || 2002 || Agriculture, Natural sources, Pasture grazing-riparian and/or upland, urban runoff/storm sewers || 5.5 || January 31, 2012 || Shall not exceed an average of 200 MPN per 100mL, and 10% of samples collected may not exceed 400 MPN per 100mL based on a min of 5 samples in any 30-day period.<ref name="Lower Salinas Fecal Coliform TMDL">[https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]</ref> <br />
|-<br />
|Nitrate || 2010 || Agriculture, urban runoff/storm sewers ||5.5 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Nutrients || 1996 || Agriculture Return flows, agriculture, agriculture-irrigation tailwater, agriculture-storm runoff, irrigated crop production, nonpoint source || 5.5 || October 13, 2015 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrient TMDL]<br />
|-<br />
|Pesticides || 1996 || Agriculture Return flows, agriculture, agriculture-irrigation tailwater, agriculture-storm runoff, irrigated crop production, nonpoint source || 5.5 || October 7, 2011 || See Chlorpyrifos & Diazinon<ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Sediment Toxicity || 2010 || Agriculture, grazing related sources, urban runoff/storm sewers || 5.5 || Estimated: 2013 || Will be heard at the May 12-13 2016 Central Coast Water Board hearing in Watsonville<ref name="Salinas Sediment Toxicity TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River Watershed Sediment Toxicity TMDL]</ref><br />
|-<br />
|Total Coliform || 2010 || Agriculture, grazing related sources, natural sources, urban runoff/storm sewers || 5.5 || Estimated: 2013 || TBD, see also Fecal Coliform<br />
|-<br />
|Turbidity || 2010 || Agriculture, grazing related sources, natural sources, urban runoff/storm sewers || 5.5 || Estimated: 2013 || TBD<br />
|-<br />
|Unknown Toxicity || 2010 || Agriculture, grazing related sources, natural sources, urban runoff/storm sewers || 5.5 || Estimated: 2013 || TBD<br />
|-<br />
|pH || 2010 || Agriculture, grazing related sources, natural sources, urban runoff/storm sewers || 5.5 || Estimated: 2013 || TBD<br />
|-<br />
|}<br />
<br />
'''Salinas Reclamation Canal'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Ammonia, Unionized || 2006 || Agriculture, Grazing, Urban runoff--Industrial Permitted & Non industrial permitted, urban runoff/storm sewers || 7.7 || October 13, 2015 || Year Round un-ionized ammonia as N must not exceed 0.025mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Chlorpyrifos || 2010 || Agriculture, Grazing, Urban runoff--Industrial Permitted & Non industrial permitted, urban runoff/storm sewers || 7.7 || October 7, 2011 || 1-hour average of Chlorpyrifos must not exceed 0.025ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.015ppb<ref name="Lower Salinas C&D TMDL"> [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41433&p_report_type= LOWER SALINAS RIVER WATERSHED CHLORPYRIFOS AND DIAZINON TMDLS]</ref><br />
|-<br />
|Copper || 2010 || Agriculture, Grazing, Urban runoff--Industrial Permitted & Non industrial permitted, urban runoff/storm sewers || 7.7 || Estimated: 2018 || TBD<br />
|-<br />
|Diazinon || 2010 || Agriculture, Grazing, Urban runoff--Industrial Permitted & Non industrial permitted, urban runoff/storm sewers || 7.7 || October 7, 2011 || 1-hour average of Diazinon must not exceed 0.16 ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.10ppb <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|E. Coli || 2010 || Agriculture, Grazing, Natural sources, Urban runoff--Industrial Permitted & Non industrial permitted, urban runoff/storm sewers || 7.7 || Estimated: 2013 || TBD, See also [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]<br />
|-<br />
|Fecal Coliform || 2002 || Agriculture, Grazing, Removal of riparian vegetation, Urban runoff--Industrial Permitted & Non industrial permitted, urban runoff/storm sewers || 7.7 || January 31, 2012 || Shall not exceed an average of 200 MPN per 100mL, and 10% of samples collected may not exceed 400 MPN per 100mL based on a min of 5 samples in any 30-day period.<ref name="Lower Salinas Fecal Coliform TMDL">[https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]</ref> <br />
|-<br />
|Low Dissolved Oxygen || 2002 || Agriculture, Grazing, Removal of riparian vegetation, Urban runoff--Industrial Permitted & Non industrial permitted, urban runoff/storm sewers|| 7.7 || October 13, 2015 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrients TMDL]<br />
|-<br />
|Nitrate || 2010 || Agriculture, Urban runoff, Storm sewers || 7.7 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Pesticides || 1992 || Agriculture, Agriculture return flows, agriculture irrigation tailwater, agriculture storm runoff, irrigated crop production, minor industrial point source, nonpoint source || 7.7 || October 7, 2011 || Will be heard at the May 12-13, 2016 Central Coast Water Board hearing in Watsonville, also see Chlorpyrifos & Diazinon<ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Priority Organics || 1996 || Agriculture, Agriculture return flows, agriculture irrigation tailwater, agriculture storm runoff, irrigated crop production, minor industrial point source, nonpoint source, unknown source || 7.7 || Estimated: 2013 || TBD<br />
|-<br />
|Sediment Toxicity || 2010 || Agriculture, Grazing, Removal of riparian vegetation, urban runoff-- Industrial and Non industrial permitted, urban runoff/storm sewers|| 7.7 || Estimated: 2013 || Will be heard at the May 12-13 2016 Central Coast Water Board hearing in Watsonville<ref name="Salinas Sediment Toxicity TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River Watershed Sediment Toxicity TMDL]</ref><br />
|-<br />
|Turbidity || 2010 || Agriculture, Grazing, Removal of riparian vegetation, urban runoff-- Industrial and Non industrial permitted, urban runoff/storm sewers || 7.7 || Estimated: 2013 || TBD<br />
|-<br />
|Unknown Toxicity || 2010 || Agriculture, Grazing, Removal of riparian vegetation, urban runoff-- Industrial and Non industrial permitted, urban runoff/storm sewers || 7.7 || Estimated: 2013 || TBD<br />
|-<br />
|pH || 2010 || Agriculture, Grazing, Removal of riparian vegetation, urban runoff-- Industrial and Non industrial permitted, urban runoff/storm sewers || 7.7 || Estimated: 2013 || TBD<br />
|-<br />
|}<br />
<br />
'''Gabilan Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Ammonia, Unionized || 2010 || Agriculture, Grazing, Other urban runoff || 6.4 || October 13, 2015 || Year Round un-ionized ammonia as N must not exceed 0.025mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Fecal Coliform || 2002 || Agriculture, Grazing, Other urban runoff || 6.4 || January 31, 2012 || Shall not exceed an average of 200 MPN per 100mL, and 10% of samples collected may not exceed 400 MPN per 100mL based on a min of 5 samples in any 30-day period.<ref name="Lower Salinas Fecal Coliform TMDL">[https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]</ref> <br />
|-<br />
|Nitrate || 2006 || Agriculture, Grazing, Other urban runoff || 6.4 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Sediment Toxicity || 2010 || Agriculture, Grazing, Other urban runoff || 6.4 || Estimated: 2013 || Will be heard at the May 12-13 2016 Central Coast Water Board hearing in Watsonville<ref name="Salinas Sediment Toxicity TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River Watershed Sediment Toxicity TMDL]</ref><br />
|-<br />
|Turbidity || 2010 || Agriculture, Grazing, Other urban runoff || 6.4 || Estimated: 2013 || TBD<br />
|-<br />
|pH || 2010 || Agriculture, Grazing, Other urban runoff || 6.4 || Estimated: 2013 || TBD<br />
|-<br />
|}<br />
<br />
'''Natividad Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Ammonia, Unionized || 2010 || Agriculture, Grazing, Other urban runoff || 7 || October 13, 2015 || Year Round un-ionized ammonia as N must not exceed 0.025mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|E. Coli || 2010 || Agriculture, Grazing, Other urban runoff || 7 || Estimated: 2013 || TBD, See also [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]<br />
|-<br />
|Low Dissolved Oxygen || 2010 || Agriculture, Grazing, Removal of riparian vegetation, Other urban runoff || 7 || October 13, 2015 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrients TMDL]<br />
|-<br />
|Nitrate || 2006 || Agriculture, Grazing, Other urban runoff, removal of riparian vegetation || 7 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Sediment Toxicity || 2010 || Agriculture, Grazing, Other urban runoff, removal of riparian vegetation || 7 || Estimated: 2013 || Will be heard at the May 12-13 2016 Central Coast Water Board hearing in Watsonville<ref name="Salinas Sediment Toxicity TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River Watershed Sediment Toxicity TMDL]</ref><br />
|-<br />
|Temperature, water || 2010 || Agriculture, Grazing, Other urban runoff, removal of riparian vegetation || 7 || Estimated: 2013 || TBD<br />
|-<br />
|Turbidity || 2010 || Agriculture, Grazing, Other urban runoff, removal of riparian vegetation || 7 || Estimated: 2013 || TBD<br />
|-<br />
|Unknown Toxicity || 2010 || Agriculture, Grazing, Other urban runoff, removal of riparian vegetation || 7 || Estimated: 2013 || TBD<br />
|-<br />
|pH || 2010 || Agriculture, Grazing, Other urban runoff || 7 || Estimated: 2013 || TBD<br />
|-<br />
|}<br />
<br />
'''Alisal Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Chlorophyll-a || 2010 || Agriculture || 16 || Estimated: 2013 || TBD, Also See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL]<br />
|-<br />
|Fecal Coliform || 2002 || Agriculture, Natural sources, Nonpoint source, urban runoff/storm sewers || 16 || January 31, 2012 || Shall not exceed an average of 200 MPN per 100mL, and 10% of samples collected may not exceed 400 MPN per 100mL based on a min of 5 samples in any 30-day period.<ref name="Lower Salinas Fecal Coliform TMDL">[https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]</ref> <br />
|-<br />
|Nitrate || 2002 || Agriculture, nonpoint source, urban runoff/storm sewers || 16 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Sodium || 2010 || Agriculture, nonpoint source, urban runoff/storm sewers || 16 || Estimated: 2018 || TBD<br />
|-<br />
|}<br />
<br />
'''Alisal Slough<Ref>[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2012state_ir_reports/00873.shtml#22625 Supporting Info for Alisal Creek]</ref>'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Low Dissolved Oxygen ||2010|| '''2010:'''Agriculture '''2012:''' Source Unknown <ref name="2012 Integrated Report 303(d) List">[http://gispublic.waterboards.ca.gov/webmap/303d_2012/files/2012_USEPA_approv_303d_List_Final_20150807wsrcs.xls 2012 Integrated Report 303(d) list]</ref> || 7.3 || October 13, 2015 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrients TMDL]<br />
|-<br />
|Nitrate ||2010||'''2010:'''Agriculture '''2012:''' Source Unknown|| 7.3 || October 13, 2015 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrient TMDL]<br />
|-<br />
|Sediment Toxicity || 2010||'''2012:''' Source Unknown|| 7.3 || TBD || Estimated 2013<br />
|-<br />
|Unknown Toxicity (Chlorpyrifos), 5A || 2010 || '''2012:''' Source Unknown|| 7.3 || See Lower Salinas River || Estimated 2025<br />
|}<br />
<br />
'''Quail Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Ammonia (Unionized) || 2010 || Agriculture, Grazing, Nurseries || 4.2 || October 13, 2015 || Year Round un-ionized ammonia as N must not exceed 0.025mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Chlorpyrifos|| 2010 || Agriculture, Grazing, Nurseries || 4.2 || October 7, 2011 || 1-hour average of Chlorpyrifos must not exceed 0.025ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.015ppb<ref name="Lower Salinas C&D TMDL"> [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41433&p_report_type= LOWER SALINAS RIVER WATERSHED CHLORPYRIFOS AND DIAZINON TMDLS]</ref><br />
|-<br />
|Diazinon || 2010 || Agriculture, Grazing, Nurseries || 4.2 || October 7, 2011 || 1-hour average of Diazinon must not exceed 0.16 ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.10ppb <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|E. Coli || 2010 || Agriculture, Grazing, Nurseries || 402 || Estimated: 2013 || TBD, See also Fecal Coliform<br />
|-<br />
|Fecal Coliform || 2010 || Agriculture, Grazing, Nurseries || 4.2 || January 31, 2012 || Shall not exceed an average of 200 MPN per 100mL, and 10% of samples collected may not exceed 400 MPN per 100mL based on a min of 5 samples in any 30-day period.<ref name="Lower Salinas Fecal Coliform TMDL">[https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]</ref> <br />
|-<br />
|Low Dissolved Oxygen || 2010 || Agriculture, Grazing, Nurseries, Removal of Riparian Vegetation || 4.2 || October 13, 2015 || TBD, See also [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrient TMDL]<br />
|-<br />
|Nitrate || 2006 || Agriculture, Grazing, Nurseries, Removal of Riparian Vegetation || 4.2 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Sediment Toxicity || 2010 || Agriculture, Grazing, Nurseries || 4.2 || Estimated: 2013 || Will be heard at the May 12-13 2016 Central Coast Water Board hearing in Watsonville<ref name="Salinas Sediment Toxicity TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River Watershed Sediment Toxicity TMDL]</ref><br />
|-<br />
|Temperature, water || 2010 || Agriculture, Removal of Riparian Vegetation || 4.2 || Estimated: 2013 || TBD<br />
|-<br />
|Turbidity || 2010 || Agriculture, Grazing, Removal of Riparian Vegetation || 4.2 || Estimated: 2013 || In Development<br />
|-<br />
|Unknown Toxicity || 2010 || Agriculture, Grazing, Nurseries || 4.2 || Estimated: 2013 || TBD <br />
|-<br />
|}<br />
<br />
'''Chualar Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Ammonia (Unionized) || 2010 || Agriculture, Other Urban Runoff, Removal of Riparian Vegetation || 14 || October 13, 2015 || Year Round un-ionized ammonia as N must not exceed 0.025mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Chlorpyrifos || 2010 || Agriculture, Other urban runoff || 14 || October 7, 2011 || 1-hour average of Chlorpyrifos must not exceed 0.025ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.015ppb<ref name="Lower Salinas C&D TMDL"> [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41433&p_report_type= LOWER SALINAS RIVER WATERSHED CHLORPYRIFOS AND DIAZINON TMDLS]</ref><br />
|-<br />
|Diazinon || 2010 || Agriculture, Other urban runoff || 14 || October 7, 2011 || 1-hour average of Diazinon must not exceed 0.16 ppb more than once in a three year period, and 4-day average of Diazinon must not exceed 0.10ppb <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|E. Coli || 2010 || Agriculture, Natural Sources, Other urban runoff || 14 || TBD, See also Fecal Coliform<br />
|-<br />
|Fecal Coliform || 2010 || Agriculture, Natural Sources, Other urban runoff || 14 || January 31, 2012 || Shall not exceed an average of 200 MPN per 100mL, and 10% of samples collected may not exceed 400 MPN per 100mL based on a min of 5 samples in any 30-day period.<ref name="Lower Salinas Fecal Coliform TMDL">[https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]</ref> <br />
|-<br />
|Nitrate || 2010 || Agriculture, Natural Sources, Other urban runoff || 14 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Temperature, water|| 2010 || Agriculture, other urban runoff, removal of riparian vegetation || 14 || Estimated: 2013 || TBD<br />
|-<br />
|Turbidity|| 2010 || Agriculture, other urban runoff, removal of riparian vegetation || 14 || Estimated: 2013 || TBD<br />
|-<br />
|Unknown Toxicity|| 2010 || Agriculture, Urban Runoff/Storm Sewers|| 14 || Estimated: 2013 || TBD<br />
|-<br />
|pH|| 2010 || Agriculture, Urban Runoff/Storm Sewers|| 14 || Estimated: 2013 || TBD<br />
|-<br />
|}<br />
<br />
'''Salinas River (Lower, estuary to near Gonzales Rd crossing)'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Chlordane || 2010 || Unknown || 31 || Estimated: 2013 || TBD<br />
|-<br />
|Chloride || 2010 || Agriculture, Grazing, Natural Sources, other urban runoff || 31 || Estimated: 2018 || TBD<br />
|-<br />
|Chlorpyrifos || 2010 || Agriculture, Grazing, Other urban runoff || 31 || October 7, 2011 || 1-hour average of Chlorpyrifos must not exceed 0.025ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.015ppb<ref name="Lower Salinas C&D TMDL"> [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41433&p_report_type= LOWER SALINAS RIVER WATERSHED CHLORPYRIFOS AND DIAZINON TMDLS]</ref><br />
|-<br />
|DDD (Dichlorodiphenyldichloroethane)|| 2010 || Source Unknown|| 31 || October 7, 2011 || See Diazinon & Chlorpyrifos <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Diazinon || 2010 || Agriculture, Grazing || 31 || October 7, 2011 || 1-hour average of Diazinon must not exceed 0.16 ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.10ppb <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Dieldrin || 2010 || Source Unknown || 31 || October 7, 2011 || See Diazinon & Chlorpyrifos <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Electrical Conductivity || 2010 || Source Unknown || 31 || Estimated: 2013 || TBD<br />
|-<br />
|Enterococcus Bacteria || 2010 || Agriculture, Grazing, Illigal dumping, Natural sources, Pasture Grazing-Riparian and/or Upland, Transient encampments, Urban Runoff/storm sewers || 31 || Estimated: 2013 || TBD<br />
|-<br />
|E. Coli || 2010 || Agriculture, Grazing, Illigal dumping, Natural sources, Pasture Grazing-Riparian and/or Upland, Transient encampments, Urban Runoff/storm sewers || 31 || Estimated: 2013 || TBD, See also [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]<br />
|-<br />
|Fecal Coliform || 2002 || Agriculture, Grazing, Illigal dumping, Natural sources, Pasture Grazing-Riparian and/or Upland, Transient encampments, Urban Runoff/storm sewers || 31 || January 31, 2012 || Shall not exceed an average of 200 MPN per 100mL, and 10% of samples collected may not exceed 400 MPN per 100mL based on a min of 5 samples in any 30-day period.<ref name="Lower Salinas Fecal Coliform TMDL">[https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]</ref> <br />
|-<br />
|Nitrate || 2006 || Agriculture, Grazing, Urban runoff, Storm sewers || 31 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|PCBs (Polychlorinated biphenyls) || 2010 || Source Unknown || 31 || Estimated: 2013 || TBD<br />
|-<br />
|Pesticides || 1998 || Agriculture, Construction/Land Development, Point source, Urban runoff/Storm Sewers|| 31 || October 7, 2011 || Will be heard at the May 12-13, 2016 Central Coast Water Board hearing in Watsonville, also see Chlorpyrifos & Diazinon<ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Sodium || 2010 || Source Unknown || 31 || Estimated: 2018 || TBD<br />
|-<br />
|Total Dissolved Solids || 2010 || Source Unknown || 31 || Estimated: 2018 || TBD<br />
|-<br />
|Toxaphene || 1994 || Source unknown || 31 || Estimated: 2013 || TBD<br />
|-<br />
|Turbidity || 2010 || Agriculture, Grazing, Other urban runoff || 31 || Estimated: 2013 || TBD<br />
|-<br />
|Unknown Toxicity || 2010 || Agriculture, Grazing, Other urban runoff || 31 || Estimated: 2013 || TBD <br />
|-<br />
|pH || 2010 || Source Unknown || 31 || Estimated: 2013 || TBD<br />
|-<br />
|}<br />
<br />
'''Salinas River (middle, near Gonzales Rd crossing to confluence with Nacimiento River)'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|E. Coli || 2010 || Agriculture, Grazing, Land Development, Natural Sources, Other Urban Runoff || 72 || Estimated: 2021 || See also [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Watershed Fecal Coliform TMDL]<br />
|-<br />
|Fecal Coliform || 2010 || Agriculture, Grazing, Natural Sources, Other Urban Runoff || 72 || Estimated: 2021 || TBD, See also Lower Salinas River<br />
|-<br />
|Pesticides || 2002 || Agriculture Return Flows, Agriculture, Agriculture-irrigation tailwater, Agriculture-storm runoff, Irrigated Crop production, Nonpoint source || 72 || Estimated: 2021 || TBD<br />
|-<br />
|Temperature, Water || 2010 || Agriculture, Grazing, Other Urban runoff || 72 || Estimated: 2021 || TBD<br />
|-<br />
|Turbidity || 2010 || Agriculture, Grazing, Other Urban runoff || 72 || Estimated: 2021 || TBD<br />
|-<br />
|Unknown Toxicity || 2010 || Agriculture, Grazing, Other Urban runoff || 72 || Estimated: 2021 || TBD<br />
|-<br />
|pH || 2010 || Agriculture, Grazing, Natural sources, Other Urban runoff || 72 || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
'''Salinas River (upper,confluence of Nacimiento River to Santa Margarita Reservoir)'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Chloride|| 2002 || Agriculture, Pasture grazing- Riparian and/or Upland, Urban Runoff/Storm Sewers || 49 || Estimated: 2021 || TBD<br />
|-<br />
|Sodium || 2002 || Agriculture, Pasture grazing- Riparian and/or Upland, Urban Runoff/Storm Sewers || 49 || Estimated: 2021 || TBD<br />
|-<br />
|pH|| 2010 || Agriculture, Pasture grazing- Riparian and/or Upland, Natural Sources, Urban Runoff/Storm Sewers || 49 || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
'''Espinosa Lake'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Chlorpyrifos || 2010 || Unknown || 163 || October 7, 2011 || 1-hour average of Chlorpyrifos must not exceed 0.025ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.015ppb<ref name="Lower Salinas C&D TMDL"> [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41433&p_report_type= LOWER SALINAS RIVER WATERSHED CHLORPYRIFOS AND DIAZINON TMDLS]</ref><br />
|-<br />
|Diazinon || 2010 || Agriculture || 163 || October 7, 2011 || 1-hour average of Diazinon must not exceed 0.16 ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.10ppb <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|}<br />
<br />
'''Espinosa Slough'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Ammonia, Unionized || 2010 || Agriculture || 1.4 || October 13, 2015|| Year Round un-ionized ammonia as N must not exceed 0.025mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Diazinon || 2010 || Agriculture || 1.4 || October 7, 2011 || 1-hour average of Diazinon must not exceed 0.16 ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.10ppb <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Nitrate || 2010 || Agriculture ||1.4 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Pesticides || 1996 || Agriculture, Urban runoff/storm sewers || 1.4 || October 7, 2011 || Will be heard at the May 12-13, 2016 Central Coast Water Board hearing in Watsonville, also see Chlorpyrifos & Diazinon<ref name="Lower Salinas C&D TMDL"></ref><br />
|- <br />
|Priority Organics || 1996 || Nonpoint source || 1.4 || Estimated: 2013 || TBD<br />
|-<br />
|Sediment Toxicity || 2010 || Agriculture || 1.4 || Estimated: 2013 || Will be heard at the May 12-13 2016 Central Coast Water Board hearing in Watsonville<ref name="Salinas Sediment Toxicity TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River Watershed Sediment Toxicity TMDL]</ref><br />
|-<br />
|Turbidity || 2010 || Agriculture || 1.4 || Estimated: 2013 || TBD<br />
|-<br />
|Unknown Toxicity || 2010 || Agriculture || 1.4 || Estimated: 2013 || TBD<br />
|-<br />
|pH || 2010 || Agriculture || 1.4 || Estimated: 2013 || TBD <br />
|-<br />
|}<br />
<br />
<br />
'''Esperanza Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Nitrate || 2010 || Unknown || 3.7 ||October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|}<br />
<br />
'''Arroyo Seco River'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Fecal Coliform || 2010 || Unknown || 43 || Estimated: 2021 || TBD<br />
|-<br />
|Temperature, water || 2010 || Unknown || 43 || Estimated 2021 || TBD<br />
|-<br />
|}<br />
<br />
'''San Lorenzo Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Boron || 2002 || Unknown || 49 || Estimated: 2021 || TBD<br />
|-<br />
|Chloride || 2010 || Grazing-Related sources, Natural source, Unknown sources || 49 || Estimated 2021 || TBD<br />
|-<br />
|Electrical Conductivity || 2010 || Natural Sources || 49 || Estimated 2021 || TBD<br />
|-<br />
|E. Coli || 2010 || Grazing Related Sources, Natural Sources || 49 || Estimated: 2021 || TBD, see also Fecal Coliform<br />
|-<br />
|Fecal Coliform || 2002 || Grazing Related sources, Natural Sources || November 30, 2011 || Geometric mean should not exceed 126/100mL, no sample shoudl exceed the 90% confidence level of 409/100mL <ref name="San Lorenzo Fecal Coliform TMDL"> [https://ofmpub.epa.gov/waters10/attains_impaired_waters.show_tmdl_document?p_tmdl_doc_blobs_id=73620 San Lorenzo Creek Fecal Coliform TMDL]</ref><br />
|- <br />
|Sodium || 2010 || Grazing Related sources, Natural Sources || 49 || Estimated: 2120 || TBD<br />
|-<br />
|pH || 2010 ||Grazing Related sources, Natural Sources || 49 || Estimated: 2120 || TBD<br />
|-<br />
|}<br />
<br />
'''San Antonio River'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|E. Coli || 2010 || Natural Sources, Source Unknown || 11 || November 30, 2011 || Must not exceed log mean of 200\100mL, nor shall more than 10% of samples exceed 400/100mL <ref name="SanAntonioRiverFecalTMDL"> [https://ofmpub.epa.gov/waters10/attains_impaired_waters.show_tmdl_document?p_tmdl_doc_blobs_id=73619 San Antonio River Fecal Coliform TMDL]</ref><br />
|-<br />
|Fecal Coliform || 2010 || Natural Sources, Source Unknown || 11 || November 30, 2011 || Must not exceed log mean of 200\100mL, nor shall more than 10% of samples exceed 400/100mL <ref name="SanAntonioRiverFecalTMDL"> [https://ofmpub.epa.gov/waters10/attains_impaired_waters.show_tmdl_document?p_tmdl_doc_blobs_id=73619 San Antonio River Fecal Coliform TMDL]</ref><br />
|-<br />
|}<br />
<br />
'''San Antonio Resevoir'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Mercury || 2010 || Source Unknown || 5417 || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
<br />
<br />
'''Aptos Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Fecal Coliform, 5A|| 1990 ||Collection System Failure, Natural Sources, Onsite Wastewater Systems (Septic Tanks), Pasture Grazing-Riparian and/or Upland, Urban Runoff/Storm Sewers<ref name= "CCRWQCB Aptos Creek Impairments and Evidence"> [CCRWQCB Aptos Creek Impairments and Evidence CCRWQCB Aptos Creek Impairments and Evidence]</ref>|| 8.4 || January 20, 2011||Fecal Coliform concentration shall not exceed - 200 MPN/100mL (w/ no less than 5 samples for any 30-day period) or 400 MPN/100mL (for no more than 10% of single samples collected during any 30-day period)<ref name="US EPA Aptos TMDL approval"> [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/aptos/pathogens/aptos_path_epa_approval_ltr.pdf US EPA Aptos TMDL Approval Letter]</ref><br />
|-<br />
|Sedimentation/Siltation, 5A||1990||Channel erosion, land development||8.4||Estimated 2021|| TBD<br />
|-<br />
|}<br />
<br />
* Harkins Slough<br />
** Chlorophyll-a, Category 5A<br />
** Low Dissolved Oxygen, Category 5A<br />
** Pathogens, Category 5B<br />
<br />
<br />
==Links==<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]]<br />
* [[Lower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress]]<br />
* [[TMDL]]<br />
* [[Monterey Bay Region]]<br />
* [[Clean Water Act]]<br />
* [[Watershed Issues on the Central Coast of California]]<br />
* [[Central Coast Water Quality Coalition]]<br />
<br />
==References==<br />
<references/><br />
<br />
== Disclaimer ==<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/Monterey_Bay_Area_TMDL_Listings_-_Priorities,_Progress,_and_DocumentsMonterey Bay Area TMDL Listings - Priorities, Progress, and Documents2016-04-11T17:13:44Z<p>Kaitlync: /* Links */</p>
<hr />
<div>This page on the Monterey Bay Area [[TMDL listings]] is intended to provide an overview of agency determinations for the various listed waterbodies in the [[Monterey Bay]]. This page was created by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
:''See also: [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]]''<br />
<br />
==Monterey Bay Area Listings==<br />
<br />
:''See also: [[TMDLs in the Monterey Bay Region of California#Summary of listing categories | Summary of listing categories]]''<br />
<br />
====Pajaro River Watershed====<br />
Impaired water bodies listed downstream to upstream & north to south.<br />
<br />
'''Watsonville Slough'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Low Dissolved Oxygen|| 2010 || Agriculture, Removal of Riparian vegetation, Urban runoff/storm sewers || 6.2 || Estimated: 2021 || TBD<br />
|-<br />
|Pathogens || 1996 || Agriculture, Collection system failure, Grazing, Landfills, Natural sources, Pasture grazing-riparian and/or upland, Urban runoff/storm sewers ||6.2 || July 19, 2007 || Based on a minimum of no less than 5 samples: Fecal coliform shall not exceed a log mean of 200MPN/100mL, and 10% of total samples must not exceed 400MPN/100mL <Ref name="Watsonville Slough Pathogen TMDL"> [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=32760&p_report_type= Watsonville Slough Pathogen TMDL]</ref><br />
|-<br />
|Pesticides || 1996 || Agriculture, Agriculture-irrigation tailwater, Agriculture storm runoff, Irrigated crop production, nonpoint source || 6.2 || Estimated: 2021 || TBD<br />
|-<br />
|Turbidity || 2010 || Agriculture, Removal of riparian vegetation, Urban runoff/storm sewers || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
'''Beach Road Ditch'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Low Dissolved Oxygen|| 2010 || Agriculture, Removal of Riparian vegetation || 0.78 || Estimated: 2021 || TBD<br />
|-<br />
|Nitrate || 2010 || Agriculture, Removal of Riparian vegetation || 0.78 || Estimated: 2021 || TBD<br />
|-<br />
|Turbidity || 2010 || Agriculture, Removal of Riparian vegetation || 0.78 || Estimated: 2021 || TBD<br />
|-<br />
|pH || 2010 || Agriculture || 0.78 || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
'''Pajaro River'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Boron || 2006 || Agriculture, Other urban runoff, Saltwater intrustion, Source unknown || 32 || Estimated: 2021 || TBD<br />
|-<br />
|Chlordane || 2010 || Source unknown || 32 || Estimated: 2021 || TBD<br />
|-<br />
|Chloride || 2010 || Agriculture, Natural sources, Other urban runoff, Saltwater intrusion || 32 || Estimated: 2021 || TBD<br />
|-<br />
|Chlorpyrifos || 2010 || Agriculture, other urban runoff || 32 || November 12, 2013 || 1-hour average of Chlorpyrifos must not exceed 0.025ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.015ppb <ref name= "Pajaro River C&D TMDL"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/pajaro/pesticides/paj_op_tmdl_staff_report.pdf Pajaro River watershed Chlorpyrifos and Diazinon TMDL]</ref><br />
|-<br />
|DDD (Dichlorodiphenyldichloroethane) || 2010 || Source unknown || 32 || Estimated: 2013 || TBD<br />
|-<br />
| Dieldrin || 2010 || Source Unknown || 32 || Estimated 2021 || TBD<br />
|-<br />
|Escherichia coli (E. Coli) || 2010 || Collection system failure, natural sources, onsite wastewater systems, pasture grazing-riparian and/or upland, transient encampments, urban runoff/storm sewers || 32 || August 3, 2010 || Must not exceed 235 MPN/100mL <ref name="Pajaro River Fecal Coliform TMDL"> [https://ofmpub.epa.gov/waters10/attains_impaired_waters.show_tmdl_document?p_tmdl_doc_blobs_id=73380 Pajaro River Fecal Coliform TMDL]</ref><br />
|-<br />
|Fecal Coliform || 2002 || Collection system failure, natural sources, onsite wastewater systems, pasture grazing-riparian and/or upland, transient encampments, urban runoff/storm sewers || 32 || August 3, 2010 || Must not exceed 400 MPN/100mL <ref name="Pajaro River Fecal Coliform TMDL"> [https://ofmpub.epa.gov/waters10/attains_impaired_waters.show_tmdl_document?p_tmdl_doc_blobs_id=73380 Pajaro River Fecal Coliform TMDL]</ref><br />
|-<br />
|Low Dissolved Oxygen || 2010 || Agriculture, Grazing-related sources, Other urban runoff, Removal of riparian vegetation, Unknown nonpoint source || 32 || Estimated: 2021 || TBD<br />
|-<br />
|Nitrate || 2006 || Agriculture, Urban runoff/Storm sewers || 32 || October 13, 2006 || Nitrate must not exceed 10 mg/L and 30-day mean must not exceed 5mg/L <ref name="Pajaro River Nitrate TMDL"> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/pajaro/nitrate/11112_r3_pajaroriver_nitrate.pdf Pajaro River Nitrate TMDL] </ref><br />
|-<br />
|Nutrients || 1996 || Agriculture Return flows, agriculture, agriculture-irrigation tailwater, agriculture storm runoff, agriculture subsurface drainage, channelization, irrigated crop production, nonpoint source, removal of riparina vegetation, urban runoff/storm sewers, wastewater - land disposal || 32 || July 30, 2015 || '''Dry Season:''' Nitrate < 1.8 to 3.9 mg/L, Total N < 1.1 mg/L to 2.1 mg/L, Orthophosphate < 0.4 to 0.14 mg/L '''Wet Season:''' Nitrate < 8 mg/L, Orthophosphate < 0.3 mg/L '''Year Round:''' Nitrate < 10 mg/L <ref name="Pajaro River Nutrient TMDL> [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/pajaro/nutrients/tmdl_report_approved.pdf Pajaro River Nutrient TMDL]</ref><br />
|-<br />
|PCBs (Polychlorinated biphenyls) || 2010 || Source unknown || 32 || Estimated: 2021 || TBD<br />
|-<br />
|Sediment/Siltation || 1996 || Agriculture, Grazing related sources, Highway/road/bridge runoff, Silviculture, Streambank modification/destabilization, Surface mining, Urban runoff/storm sewers || 32 || May 3, 2007 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/pajaro/sediment/paj_sed_tmdl_project_report.pdf Pajaro River Sediment Project report] Figure 4.4, Page 20<br />
|-<br />
|Sodium || 2010 || Agriculture, Natural sources, Other urban runoff, Saltwater intrusion, Unknown nonpoint source || 32 || Estimated: 2021 || TBD<br />
|-<br />
|Turbidity || 2010 || Agriculture, Grazing, Other urban runoff, Removal of riparian vegetation || 32 || Estimated: 2021 || TBD<br />
|-<br />
|pH || 2010 || Unknown || 32 || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
====Bolsa Neuva Watershed====<br />
Impaired water bodies listed downstream to upstream, North to south<br />
<br />
'''Moss Landing Harbor'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Chlorpyrifos || 2010 || Agriculture, Grazing Related Sources, Other urban runoff || 79 ||October 7, 2011 || 1-hour average of Chlorpyrifos must not exceed 0.025ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.015ppb<ref name="Lower Salinas C&D TMDL"> [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41433&p_report_type= LOWER SALINAS RIVER WATERSHED CHLORPYRIFOS AND DIAZINON TMDLS]</ref><br />
|-<br />
|Diazinon || 2010 || Agriculture || 79 || October 7, 2011 || 1-hour average of Diazinon must not exceed 0.16 ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.10ppb <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Low Dissolved Oxygen || 2010 || Source unknown || 79 || October 13, 2015 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrient TMDL]<br />
|-<br />
|Nickel || 2010 || Agriculture, Dredging, Marinas and Recreational boating, Natural sources, Other urban runoff, Unknown sources || 79 || Estimated: 2021 || TBD<br />
|-<br />
|Pathogens || 1992 || Agriculture, Boat discharges/vessel wastes, nonpoint source || 79 || Estimated: 2021 || TBD<br />
|-<br />
|Pesticides || 1992 || Agriculture, Irrigated and specialty crop production || 79 || Estimated: 2021 || TBD<br />
|-<br />
|Sediment Toxicity || 2010 || Agriculture, Boatyards, Dredging, Grazing related sources, marinas and recreational boating, Other urban runoff || 79 || Estimated: 2021 || TBD<br />
|-<br />
|Sedimentation/Silatation || 1996 || Agriculture, agriculture-storm runoff, channel erosion, dredging, erosion/siltation, hydromodification, irrigated crop production, nonpoint source || 79 || Estimated: 2021 || TBD<br />
|-<br />
|pH || 2010 || Source Unknown || 79 || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
'''Bennett Slough'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Chlorophyll-a || 2010 || Source Unknown || 1.9 || Estimated: 2021 || TBD, Also See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL] <br />
|-<br />
|Low Dissolved Oxygen || 2010 || Source Unknown || 1.9 || Estimated: 2021 || TBD<br />
|-<br />
|pH || 2010 || Source Unknown || 1.9 || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
'''Elkhorn Slough'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Low Dissolved Oxygen || 2010 || Agriculture, Grazing related sources, Natural sources, Urban runoff/storm sewers || 2034 || Estimated: 2021 || TBD<br />
|-<br />
|Pesticides || 1990 || Agriculture return flows, agriculture, agriculture-storm runoff, contaminated sediments, erosion/siltation, irrigated crop production, nonpoint source || 2034 || Estimated: 2021 || TBD<br />
|-<br />
|Sedimentation/Siltation || 1996 || Agriculture, agriculture-storm runoff, channel erosion, irrigated crop production, nonpoint source || 2034 || Estimated: 2021 || TBD<br />
|-<br />
|Total Coliform || 2010 || Source unknown || 2034 || Estimated: 2021 || TBD<br />
|-<br />
|pH || 2010 || Agriculture, grazing related sources, natural sources, urban runoff/storm sewers || 2034 || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
'''Watsonville Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|E. Coli || 2010 || Agriculture, Grazing related sources, Natural Sources || 5.1 || Estimated: 2021 || TBD<br />
|-<br />
|Fecal Coliform || 2010 || Agriculture, Grazing related sources, Natural Sources || 5.1 || Estimated: 2021 || TBD<br />
|-<br />
|Low Dissolved Oxygen || 2010 || Agriculture, Grazing related sources, Groundwater loadings, Removal of riparian vegetation || 5.1 || Estimated: 2021 || TBD<br />
|-<br />
|Nitrate || 2010 || Agriculture, Grazing related sources, Groundwater loadings, Removal of riparian vegetation || 5.1 || Estimated: 2021 || TBD<br />
|-<br />
|pH || 2010 || Agriculture, Grazing related sources, Groundwater loadings, Removal of riparian vegetation || 5.1 || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
'''Carneros Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Ammonia, Unionized || 2006 || Source Unknown || 12 || Estimated: 2021 || TBD<br />
|-<br />
|Chlorophyll-a || 2010 || Agriculture || 12 || Estimated: 2021 || TBD<br />
|-<br />
|Fecal Coliform || 2010 || Agriculture, natural sources || 12 || Estimated: 2021 || TBD<br />
|-<br />
|Low Dissolved Oxygen ||2010 || Agriculture || 12 || Estimated: 2021 || TBD<br />
|-<br />
|Turbidity || 2010 || Agriculture, Source unknown || 12 || Estimated: 2021 || TBD<br />
|-<br />
|pH || 2010 || Agriculture, Source unknown || 12 || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
'''Alamo Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Fecal Coliform, 5A||2002|| '''2010:''' Agriculture, Grazing, Natural Sources <ref name="Alamo Creek 2010 TMDL"> [http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/00947.shtml#22636 2010 Integrated Report Alamo Creek Impairments]</ref> '''2012:''' Source Unknown || 7.8 || Est. 2021 || TBD<br />
|}<br />
<br />
====Salinas Valley Watershed====<br />
Impaired water bodies in the Salinas Watershed listed downstream to upstream & north to south.<br />
<br />
<br />
'''Moro Cojo Slough'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Ammonia (Unionized), 5A|| 2006 ||Agriculture, Boat Discharges, Grazing, Unknown|| 62 || October 13, 2015|| Year Round un-ionized ammonia as N must not exceed 0.025mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|E. Coli|| 2010 || Agriculture, Boat Discharges, Grazing, Natural Sources, Unknown || 62 || TBD || Estimated 2021<br />
|-<br />
|Low Dissolved Oxygen|| 2002 || Source Unknown || 62 || TBD || Estimated 2021<br />
|-<br />
|Pesticides|| 2002 || Agriculture, Grazing, Riparian Vegetation Removal, Unknown || 62 || Estimated 2021 || No data since 2006<br />
|-<br />
|Sedimentation/Siltation|| 2002 || Agriculture, Construction/Land Development, Nonpoint source || 62 || Estimated 2021 || No data since 2006<br />
|-<br />
|Total Coliform|| 2010 || Source Unknown || 62 || Estimated 2021 || TBD<br />
|-<br />
| pH || 2010 || Agriculture, Boat Discharges, Grazing, Natural Sources, Removal of Riparian Vegetation, Unknown || 62 || Estimated 2021 || TBD<br />
|}<br />
<br />
'''Old Salinas River Estuary'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Nutriensts || 1992 || Agriculture, Agriculture-irrigation tailwater, irrigated crop production, nonpoint source || 16 || October 13, 2015 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrient TMDL]<br />
|-<br />
|Pesticides || 1990 || Agriculture return flows, agriculture, agriculture-irrigation tailwater, agriculture-storm runoff, irrigated crop production, nonpoint source || 16 || October 7, 2011 || Will be heard at the May 12-13, 2016 Central Coast Water Board hearing in Watsonville, also see Chlorpyrifos & Diazinon<ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|}<br />
<br />
'''Old Salinas River'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Chlorophyll-a || 2010 || Agriculture, Dredging, Other urban runoff, Removal of Riparian Vegetation || 3.8 || TBD || TMDL needed, Also See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL] <br />
|-<br />
|Chlorpyrifos || 2010 || Agriculture, Other urban runoff || 3.8 || October 7, 2011 || 1-hour average of Chlorpyrifos must not exceed 0.025ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.015ppb<br />
|-<br />
|Diazinon || 2010 || Agriculture, Other urban runoff || 3.8 || October 7, 2011 || 1-hour average of Diazinon must not exceed 0.16 ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.10ppb<br />
|-E. Coli || 2010 || Agriculture, Marinas and Recreational boating, natural sources, other urban runoff || 3.8 || Estimated: 2013 || TBD, See also [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]<br />
|-<br />
|Fecal Coliform || 2010 || Agriculture, Marinas and Recreational boating, natural sources, other urban runoff || 3.8 || January 31, 2012 || Shall not exceed an average of 200 MPN per 100mL, and 10% of samples collected may not exceed 400 MPN per 100mL based on a min of 5 samples in any 30-day period.<ref name="Lower Salinas Fecal Coliform TMDL">[https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]</ref><br />
|-<br />
|Low Dissolved Oxygen || 2010 || Agriculture, Marinas and Recreational Boating, Other Urban Runoff, Removal of Riparian Vegetation || 3.8 || October 13, 2015 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrient TMDL]<br />
|-<br />
|Nitrate || 2010 || Agriculture, Other urban runoff || 3.8 || October 13, 2015 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrient TMDL]<br />
|-<br />
|Sediment Toxicity || 2010 || Agriculture, Other urban runoff || 3.8 || Estimated: 2013 || Will be heard @ Central Coast Water Board hearing May 12-13 2016 <ref name="Salinas Sediment Toxicity TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River Watershed Sediment Toxicity TMDL]</ref><br />
|-<br />
|Turbidity || 2010 || Agriculture, Other urban runoff || 3.8 || Estimated: 2013 || TBD<br />
|-<br />
|Unknown Toxicity || 2010 || Agriculture, Other urban runoff || 3.8 || Estimated: 2013 || TBD<br />
|-<br />
|pH || 2010 || Agriculture, Other urban runoff || 3.8 || Estimated: 2013 || TBD<br />
|}<br />
<br />
'''Salinas River Lagoon (North)'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Pesticides|| 1992 || Agriculture || 197 || TBD || TBD<br />
|-<br />
|Nutrients|| 1992 || Nonpoint Source || 197 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L, Orthophosphate < 0.7 to 0.13 mg/L '''Wet Season:''' Nitrate < 8 mg/L, Orthophosphate < 0.3 mg/L '''Year Round:''' Nitrate < 10 mg/L<br />
|-<br />
|}<br />
<br />
'''Majors Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Copper || 2010 || Source unknown, Urban runoff/Storm sewers || Estimated: 2021 || TBD<br />
|-<br />
|E. Coli || 2010 || Natural Sources, Source unknown, Urban runoff/storm sewers || Estimated: 2021 || TBD<br />
|-<br />
|Lead || 2010 || Source unknown, Urban runoff/storm sewers || Estimated: 2021 || TBD<br />
|-<br />
|Zinc || 2010 || Source unknown, Urban runoff/storm sewers || Estimated: 2021 || TBD <br />
|-<br />
|}<br />
<br />
'''Blanco Drain'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Chlorpyrifos || 2010 || Agriculture, Other urban runoff || 15 || October 7, 2011 || 1-hour average of Chlorpyrifos must not exceed 0.025ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.015ppb<ref name="Lower Salinas C&D TMDL"> [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41433&p_report_type= LOWER SALINAS RIVER WATERSHED CHLORPYRIFOS AND DIAZINON TMDLS]</ref><br />
|-<br />
|Diazinon || 2010 || Agriculture || 15 || October 7, 2011 || 1-hour average of Diazinon must not exceed 0.16 ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.10ppb <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Low Dissolved Oxygen || 2010 || Agriculture, groundwater loadings || 15 || October 13, 2015 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrient TMDL]<br />
|-<br />
|Nitrate || 2010 || Agriculture, groundwater loadings || 15 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrient TMDL]</ref><br />
|-<br />
|Pesticides || 1998 || Agriculture return flows, Agriculture, Agriculture-irrigation tailwater, Agriculture storm runoff, Irrigated crop production, nonpoint source || 15 || October 7, 2011 || See Chlorpyrifos & Diazinon<ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Turbidity || 2010 || Agriculture, Removal of riparian vegetation || 15 || Estimated: 2013 || TBD<br />
|-<br />
|}<br />
<br />
'''Tembladero Slough'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Chlorophyll-a || 2010 || Agriculture, Grazing, Removal of riparian vegetation, Urban runoff/storm sewers || 5.5 || Estimated: 2013 || TBD<br />
|-<br />
|Chlorpyrifos || 2010 || Agriculture, Grazing related sources, Urban runoff/storm sewers || 5.5 || October 7, 2011 || 1-hour average of Chlorpyrifos must not exceed 0.025ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.015ppb<ref name="Lower Salinas C&D TMDL"> [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41433&p_report_type= LOWER SALINAS RIVER WATERSHED CHLORPYRIFOS AND DIAZINON TMDLS]</ref><br />
|-<br />
|Diazinon || 2010 || Agriculture, Grazing related sources, Urban runoff/storm sewers || 5.5 || October 7, 2011 || 1-hour average of Diazinon must not exceed 0.16 ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.10ppb <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Enterococcus || 2010 || Agriculture, Grazing related sources, Urban runoff/storm sewers || 5.5 || Estimated: 2013 || TBD, See Fecal Coliform<br />
|-<br />
|E. Coli || 2010 || Agriculture, Grazing related sources, Urban runoff/storm sewers, Natural sources || 5.5 || Estimated: 2013 || TBD, See Fecal Coliform<br />
|-<br />
|Fecal Coliform || 2002 || Agriculture, Natural sources, Pasture grazing-riparian and/or upland, urban runoff/storm sewers || 5.5 || January 31, 2012 || Shall not exceed an average of 200 MPN per 100mL, and 10% of samples collected may not exceed 400 MPN per 100mL based on a min of 5 samples in any 30-day period.<ref name="Lower Salinas Fecal Coliform TMDL">[https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]</ref> <br />
|-<br />
|Nitrate || 2010 || Agriculture, urban runoff/storm sewers ||5.5 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Nutrients || 1996 || Agriculture Return flows, agriculture, agriculture-irrigation tailwater, agriculture-storm runoff, irrigated crop production, nonpoint source || 5.5 || October 13, 2015 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrient TMDL]<br />
|-<br />
|Pesticides || 1996 || Agriculture Return flows, agriculture, agriculture-irrigation tailwater, agriculture-storm runoff, irrigated crop production, nonpoint source || 5.5 || October 7, 2011 || See Chlorpyrifos & Diazinon<ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Sediment Toxicity || 2010 || Agriculture, grazing related sources, urban runoff/storm sewers || 5.5 || Estimated: 2013 || Will be heard at the May 12-13 2016 Central Coast Water Board hearing in Watsonville<ref name="Salinas Sediment Toxicity TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River Watershed Sediment Toxicity TMDL]</ref><br />
|-<br />
|Total Coliform || 2010 || Agriculture, grazing related sources, natural sources, urban runoff/storm sewers || 5.5 || Estimated: 2013 || TBD, see also Fecal Coliform<br />
|-<br />
|Turbidity || 2010 || Agriculture, grazing related sources, natural sources, urban runoff/storm sewers || 5.5 || Estimated: 2013 || TBD<br />
|-<br />
|Unknown Toxicity || 2010 || Agriculture, grazing related sources, natural sources, urban runoff/storm sewers || 5.5 || Estimated: 2013 || TBD<br />
|-<br />
|pH || 2010 || Agriculture, grazing related sources, natural sources, urban runoff/storm sewers || 5.5 || Estimated: 2013 || TBD<br />
|-<br />
|}<br />
<br />
'''Salinas Reclamation Canal'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Ammonia, Unionized || 2006 || Agriculture, Grazing, Urban runoff--Industrial Permitted & Non industrial permitted, urban runoff/storm sewers || 7.7 || October 13, 2015 || Year Round un-ionized ammonia as N must not exceed 0.025mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Chlorpyrifos || 2010 || Agriculture, Grazing, Urban runoff--Industrial Permitted & Non industrial permitted, urban runoff/storm sewers || 7.7 || October 7, 2011 || 1-hour average of Chlorpyrifos must not exceed 0.025ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.015ppb<ref name="Lower Salinas C&D TMDL"> [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41433&p_report_type= LOWER SALINAS RIVER WATERSHED CHLORPYRIFOS AND DIAZINON TMDLS]</ref><br />
|-<br />
|Copper || 2010 || Agriculture, Grazing, Urban runoff--Industrial Permitted & Non industrial permitted, urban runoff/storm sewers || 7.7 || Estimated: 2018 || TBD<br />
|-<br />
|Diazinon || 2010 || Agriculture, Grazing, Urban runoff--Industrial Permitted & Non industrial permitted, urban runoff/storm sewers || 7.7 || October 7, 2011 || 1-hour average of Diazinon must not exceed 0.16 ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.10ppb <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|E. Coli || 2010 || Agriculture, Grazing, Natural sources, Urban runoff--Industrial Permitted & Non industrial permitted, urban runoff/storm sewers || 7.7 || Estimated: 2013 || TBD, See also [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]<br />
|-<br />
|Fecal Coliform || 2002 || Agriculture, Grazing, Removal of riparian vegetation, Urban runoff--Industrial Permitted & Non industrial permitted, urban runoff/storm sewers || 7.7 || January 31, 2012 || Shall not exceed an average of 200 MPN per 100mL, and 10% of samples collected may not exceed 400 MPN per 100mL based on a min of 5 samples in any 30-day period.<ref name="Lower Salinas Fecal Coliform TMDL">[https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]</ref> <br />
|-<br />
|Low Dissolved Oxygen || 2002 || Agriculture, Grazing, Removal of riparian vegetation, Urban runoff--Industrial Permitted & Non industrial permitted, urban runoff/storm sewers|| 7.7 || October 13, 2015 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrients TMDL]<br />
|-<br />
|Nitrate || 2010 || Agriculture, Urban runoff, Storm sewers || 7.7 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Pesticides || 1992 || Agriculture, Agriculture return flows, agriculture irrigation tailwater, agriculture storm runoff, irrigated crop production, minor industrial point source, nonpoint source || 7.7 || October 7, 2011 || Will be heard at the May 12-13, 2016 Central Coast Water Board hearing in Watsonville, also see Chlorpyrifos & Diazinon<ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Priority Organics || 1996 || Agriculture, Agriculture return flows, agriculture irrigation tailwater, agriculture storm runoff, irrigated crop production, minor industrial point source, nonpoint source, unknown source || 7.7 || Estimated: 2013 || TBD<br />
|-<br />
|Sediment Toxicity || 2010 || Agriculture, Grazing, Removal of riparian vegetation, urban runoff-- Industrial and Non industrial permitted, urban runoff/storm sewers|| 7.7 || Estimated: 2013 || Will be heard at the May 12-13 2016 Central Coast Water Board hearing in Watsonville<ref name="Salinas Sediment Toxicity TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River Watershed Sediment Toxicity TMDL]</ref><br />
|-<br />
|Turbidity || 2010 || Agriculture, Grazing, Removal of riparian vegetation, urban runoff-- Industrial and Non industrial permitted, urban runoff/storm sewers || 7.7 || Estimated: 2013 || TBD<br />
|-<br />
|Unknown Toxicity || 2010 || Agriculture, Grazing, Removal of riparian vegetation, urban runoff-- Industrial and Non industrial permitted, urban runoff/storm sewers || 7.7 || Estimated: 2013 || TBD<br />
|-<br />
|pH || 2010 || Agriculture, Grazing, Removal of riparian vegetation, urban runoff-- Industrial and Non industrial permitted, urban runoff/storm sewers || 7.7 || Estimated: 2013 || TBD<br />
|-<br />
|}<br />
<br />
'''Gabilan Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Ammonia, Unionized || 2010 || Agriculture, Grazing, Other urban runoff || 6.4 || October 13, 2015 || Year Round un-ionized ammonia as N must not exceed 0.025mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Fecal Coliform || 2002 || Agriculture, Grazing, Other urban runoff || 6.4 || January 31, 2012 || Shall not exceed an average of 200 MPN per 100mL, and 10% of samples collected may not exceed 400 MPN per 100mL based on a min of 5 samples in any 30-day period.<ref name="Lower Salinas Fecal Coliform TMDL">[https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]</ref> <br />
|-<br />
|Nitrate || 2006 || Agriculture, Grazing, Other urban runoff || 6.4 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Sediment Toxicity || 2010 || Agriculture, Grazing, Other urban runoff || 6.4 || Estimated: 2013 || Will be heard at the May 12-13 2016 Central Coast Water Board hearing in Watsonville<ref name="Salinas Sediment Toxicity TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River Watershed Sediment Toxicity TMDL]</ref><br />
|-<br />
|Turbidity || 2010 || Agriculture, Grazing, Other urban runoff || 6.4 || Estimated: 2013 || TBD<br />
|-<br />
|pH || 2010 || Agriculture, Grazing, Other urban runoff || 6.4 || Estimated: 2013 || TBD<br />
|-<br />
|}<br />
<br />
'''Natividad Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Ammonia, Unionized || 2010 || Agriculture, Grazing, Other urban runoff || 7 || October 13, 2015 || Year Round un-ionized ammonia as N must not exceed 0.025mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|E. Coli || 2010 || Agriculture, Grazing, Other urban runoff || 7 || Estimated: 2013 || TBD, See also [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]<br />
|-<br />
|Low Dissolved Oxygen || 2010 || Agriculture, Grazing, Removal of riparian vegetation, Other urban runoff || 7 || October 13, 2015 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrients TMDL]<br />
|-<br />
|Nitrate || 2006 || Agriculture, Grazing, Other urban runoff, removal of riparian vegetation || 7 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Sediment Toxicity || 2010 || Agriculture, Grazing, Other urban runoff, removal of riparian vegetation || 7 || Estimated: 2013 || Will be heard at the May 12-13 2016 Central Coast Water Board hearing in Watsonville<ref name="Salinas Sediment Toxicity TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River Watershed Sediment Toxicity TMDL]</ref><br />
|-<br />
|Temperature, water || 2010 || Agriculture, Grazing, Other urban runoff, removal of riparian vegetation || 7 || Estimated: 2013 || TBD<br />
|-<br />
|Turbidity || 2010 || Agriculture, Grazing, Other urban runoff, removal of riparian vegetation || 7 || Estimated: 2013 || TBD<br />
|-<br />
|Unknown Toxicity || 2010 || Agriculture, Grazing, Other urban runoff, removal of riparian vegetation || 7 || Estimated: 2013 || TBD<br />
|-<br />
|pH || 2010 || Agriculture, Grazing, Other urban runoff || 7 || Estimated: 2013 || TBD<br />
|-<br />
|}<br />
<br />
'''Alisal Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Chlorophyll-a || 2010 || Agriculture || 16 || Estimated: 2013 || TBD, Also See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas TMDL]<br />
|-<br />
|Fecal Coliform || 2002 || Agriculture, Natural sources, Nonpoint source, urban runoff/storm sewers || 16 || January 31, 2012 || Shall not exceed an average of 200 MPN per 100mL, and 10% of samples collected may not exceed 400 MPN per 100mL based on a min of 5 samples in any 30-day period.<ref name="Lower Salinas Fecal Coliform TMDL">[https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]</ref> <br />
|-<br />
|Nitrate || 2002 || Agriculture, nonpoint source, urban runoff/storm sewers || 16 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Sodium || 2010 || Agriculture, nonpoint source, urban runoff/storm sewers || 16 || Estimated: 2018 || TBD<br />
|-<br />
|}<br />
<br />
'''Alisal Slough<Ref>[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2012state_ir_reports/00873.shtml#22625 Supporting Info for Alisal Creek]</ref>'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Low Dissolved Oxygen ||2010|| '''2010:'''Agriculture '''2012:''' Source Unknown <ref name="2012 Integrated Report 303(d) List">[http://gispublic.waterboards.ca.gov/webmap/303d_2012/files/2012_USEPA_approv_303d_List_Final_20150807wsrcs.xls 2012 Integrated Report 303(d) list]</ref> || 7.3 || October 13, 2015 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrients TMDL]<br />
|-<br />
|Nitrate ||2010||'''2010:'''Agriculture '''2012:''' Source Unknown|| 7.3 || October 13, 2015 || See [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrient TMDL]<br />
|-<br />
|Sediment Toxicity || 2010||'''2012:''' Source Unknown|| 7.3 || TBD || Estimated 2013<br />
|-<br />
|Unknown Toxicity (Chlorpyrifos), 5A || 2010 || '''2012:''' Source Unknown|| 7.3 || See Lower Salinas River || Estimated 2025<br />
|}<br />
<br />
'''Quail Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Ammonia (Unionized) || 2010 || Agriculture, Grazing, Nurseries || 4.2 || October 13, 2015 || Year Round un-ionized ammonia as N must not exceed 0.025mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Chlorpyrifos|| 2010 || Agriculture, Grazing, Nurseries || 4.2 || October 7, 2011 || 1-hour average of Chlorpyrifos must not exceed 0.025ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.015ppb<ref name="Lower Salinas C&D TMDL"> [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41433&p_report_type= LOWER SALINAS RIVER WATERSHED CHLORPYRIFOS AND DIAZINON TMDLS]</ref><br />
|-<br />
|Diazinon || 2010 || Agriculture, Grazing, Nurseries || 4.2 || October 7, 2011 || 1-hour average of Diazinon must not exceed 0.16 ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.10ppb <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|E. Coli || 2010 || Agriculture, Grazing, Nurseries || 402 || Estimated: 2013 || TBD, See also Fecal Coliform<br />
|-<br />
|Fecal Coliform || 2010 || Agriculture, Grazing, Nurseries || 4.2 || January 31, 2012 || Shall not exceed an average of 200 MPN per 100mL, and 10% of samples collected may not exceed 400 MPN per 100mL based on a min of 5 samples in any 30-day period.<ref name="Lower Salinas Fecal Coliform TMDL">[https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]</ref> <br />
|-<br />
|Low Dissolved Oxygen || 2010 || Agriculture, Grazing, Nurseries, Removal of Riparian Vegetation || 4.2 || October 13, 2015 || TBD, See also [http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf Lower Salinas River Nutrient TMDL]<br />
|-<br />
|Nitrate || 2006 || Agriculture, Grazing, Nurseries, Removal of Riparian Vegetation || 4.2 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Sediment Toxicity || 2010 || Agriculture, Grazing, Nurseries || 4.2 || Estimated: 2013 || Will be heard at the May 12-13 2016 Central Coast Water Board hearing in Watsonville<ref name="Salinas Sediment Toxicity TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River Watershed Sediment Toxicity TMDL]</ref><br />
|-<br />
|Temperature, water || 2010 || Agriculture, Removal of Riparian Vegetation || 4.2 || Estimated: 2013 || TBD<br />
|-<br />
|Turbidity || 2010 || Agriculture, Grazing, Removal of Riparian Vegetation || 4.2 || Estimated: 2013 || In Development<br />
|-<br />
|Unknown Toxicity || 2010 || Agriculture, Grazing, Nurseries || 4.2 || Estimated: 2013 || TBD <br />
|-<br />
|}<br />
<br />
'''Chualar Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Ammonia (Unionized) || 2010 || Agriculture, Other Urban Runoff, Removal of Riparian Vegetation || 14 || October 13, 2015 || Year Round un-ionized ammonia as N must not exceed 0.025mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Chlorpyrifos || 2010 || Agriculture, Other urban runoff || 14 || October 7, 2011 || 1-hour average of Chlorpyrifos must not exceed 0.025ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.015ppb<ref name="Lower Salinas C&D TMDL"> [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41433&p_report_type= LOWER SALINAS RIVER WATERSHED CHLORPYRIFOS AND DIAZINON TMDLS]</ref><br />
|-<br />
|Diazinon || 2010 || Agriculture, Other urban runoff || 14 || October 7, 2011 || 1-hour average of Diazinon must not exceed 0.16 ppb more than once in a three year period, and 4-day average of Diazinon must not exceed 0.10ppb <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|E. Coli || 2010 || Agriculture, Natural Sources, Other urban runoff || 14 || TBD, See also Fecal Coliform<br />
|-<br />
|Fecal Coliform || 2010 || Agriculture, Natural Sources, Other urban runoff || 14 || January 31, 2012 || Shall not exceed an average of 200 MPN per 100mL, and 10% of samples collected may not exceed 400 MPN per 100mL based on a min of 5 samples in any 30-day period.<ref name="Lower Salinas Fecal Coliform TMDL">[https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]</ref> <br />
|-<br />
|Nitrate || 2010 || Agriculture, Natural Sources, Other urban runoff || 14 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Temperature, water|| 2010 || Agriculture, other urban runoff, removal of riparian vegetation || 14 || Estimated: 2013 || TBD<br />
|-<br />
|Turbidity|| 2010 || Agriculture, other urban runoff, removal of riparian vegetation || 14 || Estimated: 2013 || TBD<br />
|-<br />
|Unknown Toxicity|| 2010 || Agriculture, Urban Runoff/Storm Sewers|| 14 || Estimated: 2013 || TBD<br />
|-<br />
|pH|| 2010 || Agriculture, Urban Runoff/Storm Sewers|| 14 || Estimated: 2013 || TBD<br />
|-<br />
|}<br />
<br />
'''Salinas River (Lower, estuary to near Gonzales Rd crossing)'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Chlordane || 2010 || Unknown || 31 || Estimated: 2013 || TBD<br />
|-<br />
|Chloride || 2010 || Agriculture, Grazing, Natural Sources, other urban runoff || 31 || Estimated: 2018 || TBD<br />
|-<br />
|Chlorpyrifos || 2010 || Agriculture, Grazing, Other urban runoff || 31 || October 7, 2011 || 1-hour average of Chlorpyrifos must not exceed 0.025ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.015ppb<ref name="Lower Salinas C&D TMDL"> [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41433&p_report_type= LOWER SALINAS RIVER WATERSHED CHLORPYRIFOS AND DIAZINON TMDLS]</ref><br />
|-<br />
|DDD (Dichlorodiphenyldichloroethane)|| 2010 || Source Unknown|| 31 || October 7, 2011 || See Diazinon & Chlorpyrifos <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Diazinon || 2010 || Agriculture, Grazing || 31 || October 7, 2011 || 1-hour average of Diazinon must not exceed 0.16 ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.10ppb <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Dieldrin || 2010 || Source Unknown || 31 || October 7, 2011 || See Diazinon & Chlorpyrifos <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Electrical Conductivity || 2010 || Source Unknown || 31 || Estimated: 2013 || TBD<br />
|-<br />
|Enterococcus Bacteria || 2010 || Agriculture, Grazing, Illigal dumping, Natural sources, Pasture Grazing-Riparian and/or Upland, Transient encampments, Urban Runoff/storm sewers || 31 || Estimated: 2013 || TBD<br />
|-<br />
|E. Coli || 2010 || Agriculture, Grazing, Illigal dumping, Natural sources, Pasture Grazing-Riparian and/or Upland, Transient encampments, Urban Runoff/storm sewers || 31 || Estimated: 2013 || TBD, See also [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]<br />
|-<br />
|Fecal Coliform || 2002 || Agriculture, Grazing, Illigal dumping, Natural sources, Pasture Grazing-Riparian and/or Upland, Transient encampments, Urban Runoff/storm sewers || 31 || January 31, 2012 || Shall not exceed an average of 200 MPN per 100mL, and 10% of samples collected may not exceed 400 MPN per 100mL based on a min of 5 samples in any 30-day period.<ref name="Lower Salinas Fecal Coliform TMDL">[https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Fecal Coliform TMDL]</ref> <br />
|-<br />
|Nitrate || 2006 || Agriculture, Grazing, Urban runoff, Storm sewers || 31 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|PCBs (Polychlorinated biphenyls) || 2010 || Source Unknown || 31 || Estimated: 2013 || TBD<br />
|-<br />
|Pesticides || 1998 || Agriculture, Construction/Land Development, Point source, Urban runoff/Storm Sewers|| 31 || October 7, 2011 || Will be heard at the May 12-13, 2016 Central Coast Water Board hearing in Watsonville, also see Chlorpyrifos & Diazinon<ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Sodium || 2010 || Source Unknown || 31 || Estimated: 2018 || TBD<br />
|-<br />
|Total Dissolved Solids || 2010 || Source Unknown || 31 || Estimated: 2018 || TBD<br />
|-<br />
|Toxaphene || 1994 || Source unknown || 31 || Estimated: 2013 || TBD<br />
|-<br />
|Turbidity || 2010 || Agriculture, Grazing, Other urban runoff || 31 || Estimated: 2013 || TBD<br />
|-<br />
|Unknown Toxicity || 2010 || Agriculture, Grazing, Other urban runoff || 31 || Estimated: 2013 || TBD <br />
|-<br />
|pH || 2010 || Source Unknown || 31 || Estimated: 2013 || TBD<br />
|-<br />
|}<br />
<br />
'''Salinas River (middle, near Gonzales Rd crossing to confluence with Nacimiento River)'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|E. Coli || 2010 || Agriculture, Grazing, Land Development, Natural Sources, Other Urban Runoff || 72 || Estimated: 2021 || See also [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41494&p_report_type= Lower Salinas Watershed Fecal Coliform TMDL]<br />
|-<br />
|Fecal Coliform || 2010 || Agriculture, Grazing, Natural Sources, Other Urban Runoff || 72 || Estimated: 2021 || TBD, See also Lower Salinas River<br />
|-<br />
|Pesticides || 2002 || Agriculture Return Flows, Agriculture, Agriculture-irrigation tailwater, Agriculture-storm runoff, Irrigated Crop production, Nonpoint source || 72 || Estimated: 2021 || TBD<br />
|-<br />
|Temperature, Water || 2010 || Agriculture, Grazing, Other Urban runoff || 72 || Estimated: 2021 || TBD<br />
|-<br />
|Turbidity || 2010 || Agriculture, Grazing, Other Urban runoff || 72 || Estimated: 2021 || TBD<br />
|-<br />
|Unknown Toxicity || 2010 || Agriculture, Grazing, Other Urban runoff || 72 || Estimated: 2021 || TBD<br />
|-<br />
|pH || 2010 || Agriculture, Grazing, Natural sources, Other Urban runoff || 72 || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
'''Salinas River (upper,confluence of Nacimiento River to Santa Margarita Reservoir)'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Chloride|| 2002 || Agriculture, Pasture grazing- Riparian and/or Upland, Urban Runoff/Storm Sewers || 49 || Estimated: 2021 || TBD<br />
|-<br />
|Sodium || 2002 || Agriculture, Pasture grazing- Riparian and/or Upland, Urban Runoff/Storm Sewers || 49 || Estimated: 2021 || TBD<br />
|-<br />
|pH|| 2010 || Agriculture, Pasture grazing- Riparian and/or Upland, Natural Sources, Urban Runoff/Storm Sewers || 49 || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
'''Espinosa Lake'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Chlorpyrifos || 2010 || Unknown || 163 || October 7, 2011 || 1-hour average of Chlorpyrifos must not exceed 0.025ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.015ppb<ref name="Lower Salinas C&D TMDL"> [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=41433&p_report_type= LOWER SALINAS RIVER WATERSHED CHLORPYRIFOS AND DIAZINON TMDLS]</ref><br />
|-<br />
|Diazinon || 2010 || Agriculture || 163 || October 7, 2011 || 1-hour average of Diazinon must not exceed 0.16 ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.10ppb <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|}<br />
<br />
'''Espinosa Slough'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Ammonia, Unionized || 2010 || Agriculture || 1.4 || October 13, 2015|| Year Round un-ionized ammonia as N must not exceed 0.025mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Diazinon || 2010 || Agriculture || 1.4 || October 7, 2011 || 1-hour average of Diazinon must not exceed 0.16 ppb more than once in a three year period, and 4-day average of Chlorpyriffos must not exceed 0.10ppb <ref name="Lower Salinas C&D TMDL"></ref><br />
|-<br />
|Nitrate || 2010 || Agriculture ||1.4 || October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|Pesticides || 1996 || Agriculture, Urban runoff/storm sewers || 1.4 || October 7, 2011 || Will be heard at the May 12-13, 2016 Central Coast Water Board hearing in Watsonville, also see Chlorpyrifos & Diazinon<ref name="Lower Salinas C&D TMDL"></ref><br />
|- <br />
|Priority Organics || 1996 || Nonpoint source || 1.4 || Estimated: 2013 || TBD<br />
|-<br />
|Sediment Toxicity || 2010 || Agriculture || 1.4 || Estimated: 2013 || Will be heard at the May 12-13 2016 Central Coast Water Board hearing in Watsonville<ref name="Salinas Sediment Toxicity TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River Watershed Sediment Toxicity TMDL]</ref><br />
|-<br />
|Turbidity || 2010 || Agriculture || 1.4 || Estimated: 2013 || TBD<br />
|-<br />
|Unknown Toxicity || 2010 || Agriculture || 1.4 || Estimated: 2013 || TBD<br />
|-<br />
|pH || 2010 || Agriculture || 1.4 || Estimated: 2013 || TBD <br />
|-<br />
|}<br />
<br />
<br />
'''Esperanza Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Nitrate || 2010 || Unknown || 3.7 ||October 13, 2015 || '''Dry Season:''' Nitrate < 1.4 to 6.4 mg/L '''Wet Season:''' Nitrate < 8 mg/L, '''Year Round:''' Nitrate < 10 mg/L <ref name="Lower Salinas River Nutrient TMDL">[http://www.waterboards.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/nutrients/tmdl_summary.pdf]</ref><br />
|-<br />
|}<br />
<br />
'''Arroyo Seco River'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Fecal Coliform || 2010 || Unknown || 43 || Estimated: 2021 || TBD<br />
|-<br />
|Temperature, water || 2010 || Unknown || 43 || Estimated 2021 || TBD<br />
|-<br />
|}<br />
<br />
'''San Lorenzo Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Boron || 2002 || Unknown || 49 || Estimated: 2021 || TBD<br />
|-<br />
|Chloride || 2010 || Grazing-Related sources, Natural source, Unknown sources || 49 || Estimated 2021 || TBD<br />
|-<br />
|Electrical Conductivity || 2010 || Natural Sources || 49 || Estimated 2021 || TBD<br />
|-<br />
|E. Coli || 2010 || Grazing Related Sources, Natural Sources || 49 || Estimated: 2021 || TBD, see also Fecal Coliform<br />
|-<br />
|Fecal Coliform || 2002 || Grazing Related sources, Natural Sources || November 30, 2011 || Geometric mean should not exceed 126/100mL, no sample shoudl exceed the 90% confidence level of 409/100mL <ref name="San Lorenzo Fecal Coliform TMDL"> [https://ofmpub.epa.gov/waters10/attains_impaired_waters.show_tmdl_document?p_tmdl_doc_blobs_id=73620 San Lorenzo Creek Fecal Coliform TMDL]</ref><br />
|- <br />
|Sodium || 2010 || Grazing Related sources, Natural Sources || 49 || Estimated: 2120 || TBD<br />
|-<br />
|pH || 2010 ||Grazing Related sources, Natural Sources || 49 || Estimated: 2120 || TBD<br />
|-<br />
|}<br />
<br />
'''San Antonio River'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|E. Coli || 2010 || Natural Sources, Source Unknown || 11 || November 30, 2011 || Must not exceed log mean of 200\100mL, nor shall more than 10% of samples exceed 400/100mL <ref name="SanAntonioRiverFecalTMDL"> [https://ofmpub.epa.gov/waters10/attains_impaired_waters.show_tmdl_document?p_tmdl_doc_blobs_id=73619 San Antonio River Fecal Coliform TMDL]</ref><br />
|-<br />
|Fecal Coliform || 2010 || Natural Sources, Source Unknown || 11 || November 30, 2011 || Must not exceed log mean of 200\100mL, nor shall more than 10% of samples exceed 400/100mL <ref name="SanAntonioRiverFecalTMDL"> [https://ofmpub.epa.gov/waters10/attains_impaired_waters.show_tmdl_document?p_tmdl_doc_blobs_id=73619 San Antonio River Fecal Coliform TMDL]</ref><br />
|-<br />
|}<br />
<br />
'''San Antonio Resevoir'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Mercury || 2010 || Source Unknown || 5417 || Estimated: 2021 || TBD<br />
|-<br />
|}<br />
<br />
<br />
<br />
'''Aptos Creek'''<br />
{| class="wikitable" style= "width: 95%;"<br />
|-<br />
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''<br />
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''<br />
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''<br />
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''<br />
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''<br />
|-<br />
|Fecal Coliform, 5A|| 1990 ||Collection System Failure, Natural Sources, Onsite Wastewater Systems (Septic Tanks), Pasture Grazing-Riparian and/or Upland, Urban Runoff/Storm Sewers<ref name= "CCRWQCB Aptos Creek Impairments and Evidence"> [CCRWQCB Aptos Creek Impairments and Evidence CCRWQCB Aptos Creek Impairments and Evidence]</ref>|| 8.4 || January 20, 2011||Fecal Coliform concentration shall not exceed - 200 MPN/100mL (w/ no less than 5 samples for any 30-day period) or 400 MPN/100mL (for no more than 10% of single samples collected during any 30-day period)<ref name="US EPA Aptos TMDL approval"> [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/aptos/pathogens/aptos_path_epa_approval_ltr.pdf US EPA Aptos TMDL Approval Letter]</ref><br />
|-<br />
|Sedimentation/Siltation, 5A||1990||Channel erosion, land development||8.4||Estimated 2021|| TBD<br />
|-<br />
|}<br />
<br />
* Harkins Slough<br />
** Chlorophyll-a, Category 5A<br />
** Low Dissolved Oxygen, Category 5A<br />
** Pathogens, Category 5B<br />
<br />
<br />
==Links==<br />
* [[TMDLs in the Monterey Bay Region of California]]<br />
* [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]]<br />
* [[Lower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress]]<br />
* [[TMDL]]<br />
* [[Monterey Bay Region]]<br />
<br />
==References==<br />
<references/><br />
<br />
== Disclaimer ==<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlynchttp://ccows.csumb.edu/wiki/index.php/TMDLs_in_the_Monterey_Bay_Region_of_CaliforniaTMDLs in the Monterey Bay Region of California2016-04-11T17:12:53Z<p>Kaitlync: </p>
<hr />
<div>This page provides links to documents relating to [[303d]] listings and [[Total Maximum Daily Load]] (TMDL) plans in [[California's Central Coast Region]]. The page was created by the [[ENVS 560/L Watershed Systems]] class at [http://csumb.edu CSUMB].<br />
<br />
==Background==<br />
:''Main article: [[TMDL]]''<br />
<br />
Under 1987 provisions (section 304 (1)) to the [[Clean Water Act]] of 1972, states must identify and report all water bodies which do not meet [[water quality]] or [[beneficial use]] standards. Those impaired (polluted) water bodies not meeting water quality standards must be placed on the [[303d list]]. <br />
<br />
States must submit updated lists every two years. Along with identification of impaired water bodies, states must also identify stressors causing the impairment (i.e. pollutants), which are also identified on the [[303d list]]. A remediation plan must then be developed and implemented for each impaired water body listed. <br />
<br />
These plans are known as total maximum daily loads (TMDLs). [[TMDL]]s are used to define and achieve a total maximum daily load for each pollutant causing impairment within a water body. The list also identifies where a TMDL has been approved by the [[Environmental Protection Agency]] (EPA) and implementation is available, but water quality standards have not yet been met, or an action other than a TMDL is being used to address the issue.<br />
<br />
===Summary of listing categories===<br />
The CCRWQCB has assigned grouped 303(d) listings into the following categories. Only categories 4A, 4B, and 5 are included in the 303(d) list.<ref>[[CCRWQCB|Central Coast Regional Water Quality Control Board]]. 2009. Clean water act sections 305(b) and 303(d) integrated report for the Central Coast region. Public review draft April. http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/2008_0409_draft_integrated_report.pdf</ref><br />
<br />
* Category 1. All core uses are supported;<br />
* Category 2. At least one core use is supported;<br />
* Category 3. Insufficient information exists to make a determination;<br />
* Category 4A. At least one core use is not supported, however "a TMDL has been developed and approved by USEPA and is reasonably expected to result in the attainment of the water quality standard within a reasonable, specified time frame (p.10, CCRWQCB)." <br />
* Category 4B. At least one core use is not supported, however "an existing regulatory program is reasonably expected to result in the attainment of the water quality standard within a reasonable, specified timeframe (p.10, CCRWQCB)."<br />
* Category 5. At least one core use is not supported. A TMDL needs to be developed.<br />
<br />
==Central Coast 303d list documents==<br />
The [[303d list]] for the Central Coast region of California (Region 3) is maintained by the [[Central Coast Regional Water Quality Control Board]]. The 2006 303(d) list for the Central Coast region is available as a .pdf or .xls file<ref>CCRWQCB. 2006. 2006 CWA Section 303(d) List of Water Quality Limited Segments Requiring TMDLs (Central Coast Region). http://www.waterboards.ca.gov/water_issues/programs/tmdl/docs/303dlists2006/epa/r3_06_303d_reqtmdls.pdf </ref><ref>CCRWQCB. 2006. List of Water Quality Limited Segments Requiring TMDLs (Central Coast Region) http://www.waterboards.ca.gov/water_issues/programs/tmdl/docs/303dlists2006/epa/state_06_303dlist.xls></ref>. The 2010 303(d) statewide list is available as an .xls file<ref>CCRWQCB. 2010. Combined California 2010 303(d) list with potential sources. http://maps.waterboards.ca.gov/webmap/303d/files/2010_USEPA_approv_303d_List_Final_122311wsrcs.xls</ref> but is not available as a Central Coast-specific document as of March 2014. The 2012 303(d) statewide list was approved by the EPA on July 30, 2015 and is available via an [http://www.waterboards.ca.gov/water_issues/programs/tmdl/integrated2012.shtml integrated report] on the [[State Water Resources Control Board]] website. Although there was some Central Coast data not included in the 2012 Integrated Report, and in those cases, decisions were carried over from the 2010 list.<br />
<br />
<br />
<br />
====Monterey Bay area reports and listings, 2010-2012====<br />
<br />
Please see the following pages for information on 303(d) listed waterbodies and their impairments in the Monterey Bay region.<br />
*[[Monterey Bay Area TMDL Listings]] (table)<br />
*[[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]] (list)<br />
*[[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
<br />
<br />
====Central Coast reports and listings, 2006-2008====<br />
<br />
* From the [http://www.swrcb.ca.gov/rwqcb3 CCRWQCB web site], [http://www.swrcb.ca.gov/rwqcb3/water_issues/programs/tmdl/index.shtml TMDL program], [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d_list.shtml 303d-list page]:<br />
** [http://www.waterboards.ca.gov/water_issues/programs/tmdl/docs/303dlists2006/epa/r3_06_303d_reqtmdls.pdf Impaired waterbody (303d) list (.pdf)].<br />
** [http://www.waterboards.ca.gov/water_issues/programs/tmdl/docs/303dlists2006/epa/state_06_303dlist.xls Impaired waterbody (303d) list (.xls)]<br />
** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/2008_0409_draft_integrated_report.pdf Clean Water Act Sections 305(b) and 303(d) Integrated Report for the Central Coast Region] (approved 2009)<br />
** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_a.pdf Recommended changes since the 2006 list]<br />
** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_f.shtml 2008 New or Revised Fact Sheets for the Central Coast region]<br />
** 2008 listings by category (see [[#Summary of listing categories | Summary of listing categories]]):<br />
*** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_b.shtml Category 2]<br />
*** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_c.shtml Category 3]<br />
*** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_d.shtml Category 4A]<br />
*** [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_e.shtml Category 5]<br />
<br />
<br />
====Statewide listings including the Central Coast, 2010====<br />
<br />
*From the [http://www.waterboards.ca.gov/water_issues/programs/tmdl/integrated2010.shtml State Water Resources Control Board 2010 Integrated Report] website:<br />
**[http://maps.waterboards.ca.gov/webmap/303d/files/2010_USEPA_approv_303d_List_Final_122311.xls Impaired waterbody (303(d)) list, without potential sources (.xls)]<br />
**[http://maps.waterboards.ca.gov/webmap/303d/files/2010_USEPA_approv_303d_List_Final_122311wsrcs.xls Impaired waterbody (303(d)) list, with potential sources (.xls)]<br />
**[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/table_of_contents.shtml#r3 New or revised fact sheets for Region 3 (Central Coast region)]<br />
**[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/miscellaneous_changes_report.shtml#r3 Miscellaneous changes for the Central Coast region]<br />
**[http://www.waterboards.ca.gov/water_issues/programs/tmdl/integrated2010.shtml Maps, data download, and other materials (2010)]<br />
**2010 listings by category (see [[#Summary of listing categories | Summary of listing categories]]):<br />
***[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/category2_report.shtml Category 2]<br />
***[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/category3_report.shtml Category 3]<br />
***[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/category4a_report.shtml Category 4A]<br />
***[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/category4b_report.shtml Category 4B]<br />
***[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/category5_report.shtml Category 5]<br />
<br />
==Central Coast TMDL Projects==<br />
<br />
====TMDL Projects Currently in Development (2015-2016)====<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/carpinteria_marsh/index.shtml Carpinteria Salt Marsh] (nutrients)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/elkhorn_slough/do/index.shtml Elkhorn Slough Bennett Slough] (Biostimulatory substances)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/pajaro/nutrients/index.shtml Pajaro River] (nutrients)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/pinto_lake/index.shtml Pinto Lake catchment] (harmful algal blooms)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/sed_tox/index.shtml Salinas River] (sediment toxicity, pyrethroid pesticides)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/salinas/turbidity/index.shtml Salinas River] (turbidity)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/santa_maria/salts/index.shtml Santa Maria River] (salts)<br />
*[http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/santa_ynez/nutrient/index.shtml Santa Ynez River] (nutrients)<br />
<br />
<br />
==References==<br />
<br />
<references/><br />
<br />
==See also==<br />
* [[Central Coast Region Agricultural Waiver]]<br />
* [[Central Coast Regional Water Quality Control Board (CCRWQCB)]]<br />
* [[TMDL]]<br />
*[[Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents]]<br />
* [[Monterey Bay Area TMDL Listings | Table of 303d Listed Waters in Monterey Bay Region]]<br />
* [[Approaches to TMDL Development and Implementation in the Monterey Bay Area]]<br />
* [[TMDL for Fecal Coliform for the Lower Salinas River Watershed, Monterey County, California]]<br />
* [[TMDL for Nutrients in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[TMDL for Chlorpyrifos and Diazinon in Lower Salinas River Watershed, Monterey County, California]]<br />
* [[Monterey Bay Area TMDL Listings| Table of 303d Listed Waters in Monterey Bay Region]]<br />
* [[ENVS 560/L Watershed Systems]] class<br />
* [[Lower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress]]<br />
<br />
==Disclaimer==<br />
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students.</div>Kaitlync