Difference between revisions of "Monterey Bay Area TMDL Listings - Priorities, Progress, and Documents"

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:''See also: [[TMDLs in the Monterey Bay Region of California#Summary of listing categories | Summary of listing categories]]''
 
:''See also: [[TMDLs in the Monterey Bay Region of California#Summary of listing categories | Summary of listing categories]]''
  
====Alamo Creek====
+
====Pajaro River Watershed====
 +
Impaired water bodies listed downstream to upstream & north to south.
 +
 
 +
'''Watsonville Slough'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 17: Line 20:
 
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 
|-
 
|-
|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
+
|Low Dissolved Oxygen|| 2010 || Agriculture, Removal of Riparian vegetation, Urban runoff/storm sewers || 6.2 || Estimated: 2021 || TBD
 +
|-
 +
|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>
 +
|-
 +
|Pesticides || 1996 || Agriculture, Agriculture-irrigation tailwater, Agriculture storm runoff, Irrigated crop production, nonpoint source || 6.2 || Estimated: 2021 || TBD
 +
|-
 +
|Turbidity || 2010 || Agriculture, Removal of riparian vegetation, Urban runoff/storm sewers || Estimated: 2021 || TBD
 +
|-
 
|}
 
|}
  
====Alisal Slough====
+
'''Beach Road Ditch'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 30: Line 40:
 
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 
|-
 
|-
|Low Dissolved Oxygen, 5A||2002||  || 7.8 || Est. 2021 || TBD
+
|Low Dissolved Oxygen|| 2010 || Agriculture, Removal of Riparian vegetation || 0.78 || Estimated: 2021 || TBD
 +
|-
 +
|Nitrate ||  2010 || Agriculture, Removal of Riparian vegetation || 0.78 || Estimated: 2021 || TBD
 +
|-
 +
|Turbidity || 2010 || Agriculture, Removal of Riparian vegetation || 0.78 || Estimated: 2021 || TBD
 +
|-
 +
|pH || 2010 || Agriculture || 0.78 || Estimated: 2021 || TBD
 +
|-
 
|}
 
|}
** Low Dissolved Oxygen, Category 5A
 
** Nitrate, Category 5A
 
** Sediment Toxicity, Category 5A
 
** Unknown Toxicity, Category 5A
 
  
====Aptos Creek====
+
'''Pajaro River'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
|+ style="text-align:left;"|Fecal Coliform, 5A
 
 
|-
 
|-
 +
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
Line 47: Line 60:
 
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 
|-
 
|-
| 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>
+
|Boron || 2006 || Agriculture, Other urban runoff, Saltwater intrustion, Source unknown || 32 || Estimated: 2021 || TBD
 +
|-
 +
|Chlordane || 2010 || Source unknown || 32 || Estimated: 2021 || TBD
 +
|-
 +
|Chloride || 2010 || Agriculture, Natural sources, Other urban runoff, Saltwater intrusion || 32 || Estimated: 2021 || TBD
 +
|-
 +
|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>
 +
|-
 +
|DDD (Dichlorodiphenyldichloroethane) || 2010 || Source unknown || 32 || Estimated: 2013 || TBD
 +
|-
 +
| Dieldrin || 2010 || Source Unknown || 32 || Estimated 2021 || TBD
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|Low Dissolved Oxygen || 2010 || Agriculture, Grazing-related sources, Other urban runoff, Removal of riparian vegetation, Unknown nonpoint source || 32 || Estimated: 2021 || TBD
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|PCBs (Polychlorinated biphenyls) || 2010 || Source unknown || 32 || Estimated: 2021 || TBD
 +
|-
 +
|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
 +
|-
 +
|Sodium || 2010 || Agriculture, Natural sources, Other urban runoff, Saltwater intrusion, Unknown nonpoint source || 32 || Estimated: 2021 || TBD
 +
|-
 +
|Turbidity || 2010 || Agriculture, Grazing, Other urban runoff, Removal of riparian vegetation || 32 || Estimated: 2021 || TBD
 +
|-
 +
|pH || 2010 || Unknown || 32 || Estimated: 2021 || TBD
 +
|-
 
|}
 
|}
  
* Sedimentation/Siltation, Category 5A
+
====Bolsa Neuva Watershed====
 +
Impaired water bodies listed downstream to upstream, North to south
  
 +
'''Moss Landing Harbor'''
 +
{| class="wikitable" style= "width: 95%;"
 +
|-
 +
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|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]
 +
|-
 +
|Nickel || 2010 || Agriculture, Dredging, Marinas and Recreational boating, Natural sources, Other urban runoff, Unknown sources || 79 || Estimated: 2021 || TBD
 +
|-
 +
|Pathogens || 1992 || Agriculture, Boat discharges/vessel wastes, nonpoint source || 79 || Estimated: 2021 || TBD
 +
|-
 +
|Pesticides || 1992 || Agriculture, Irrigated and specialty crop production || 79 || Estimated: 2021 || TBD
 +
|-
 +
|Sediment Toxicity || 2010 || Agriculture, Boatyards, Dredging, Grazing related sources, marinas and recreational boating, Other urban runoff || 79 || Estimated: 2021 || TBD
 +
|-
 +
|Sedimentation/Silatation || 1996 || Agriculture, agriculture-storm runoff, channel erosion, dredging, erosion/siltation, hydromodification, irrigated crop production, nonpoint source || 79 || Estimated: 2021 || TBD
 +
|-
 +
|pH || 2010 || Source Unknown || 79 || Estimated: 2021 || TBD
 +
|-
 +
|}
  
* Blanco Drain
+
'''Bennett Slough'''
** Chlorpyrifos, Category 5A
+
{| class="wikitable" style= "width: 95%;"
** Diazinon, Category 5A
+
|-
** Low Dissolved Oxygen, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
** Nitrate, Pesticides, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
** Turbidity, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|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]
 +
|-
 +
|Low Dissolved Oxygen || 2010 || Source Unknown || 1.9 || Estimated: 2021 || TBD
 +
|-
 +
|pH || 2010 || Source Unknown || 1.9 || Estimated: 2021 || TBD
 +
|-
 +
|}
  
 +
'''Elkhorn Slough'''
 +
{| class="wikitable" style= "width: 95%;"
 +
|-
 +
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|Low Dissolved Oxygen || 2010 || Agriculture, Grazing related sources, Natural sources, Urban runoff/storm sewers || 2034 || Estimated: 2021 || TBD
 +
|-
 +
|Pesticides || 1990 || Agriculture return flows, agriculture, agriculture-storm runoff, contaminated sediments, erosion/siltation, irrigated crop production, nonpoint source || 2034 || Estimated: 2021 || TBD
 +
|-
 +
|Sedimentation/Siltation || 1996 || Agriculture, agriculture-storm runoff, channel erosion, irrigated crop production, nonpoint source || 2034 || Estimated: 2021 || TBD
 +
|-
 +
|Total Coliform || 2010 || Source unknown || 2034 || Estimated: 2021 || TBD
 +
|-
 +
|pH || 2010 || Agriculture, grazing related sources, natural sources, urban runoff/storm sewers || 2034 || Estimated: 2021 || TBD
 +
|-
 +
|}
  
* Boulder Creek
+
'''Watsonville Creek'''
** Sedimentation/Siltation, Category 5B
+
{| class="wikitable" style= "width: 95%;"
 +
|-
 +
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|E. Coli || 2010 || Agriculture, Grazing related sources, Natural Sources || 5.1 || Estimated: 2021 || TBD
 +
|-
 +
|Fecal Coliform || 2010 || Agriculture, Grazing related sources, Natural Sources || 5.1 || Estimated: 2021 || TBD
 +
|-
 +
|Low Dissolved Oxygen || 2010 || Agriculture, Grazing related sources, Groundwater loadings, Removal of riparian vegetation || 5.1 || Estimated: 2021 || TBD
 +
|-
 +
|Nitrate || 2010 || Agriculture, Grazing related sources, Groundwater loadings, Removal of riparian vegetation || 5.1 || Estimated: 2021 || TBD
 +
|-
 +
|pH || 2010 || Agriculture, Grazing related sources, Groundwater loadings, Removal of riparian vegetation || 5.1 || Estimated: 2021 || TBD
 +
|-
 +
|}
  
 +
'''Carneros Creek'''
 +
{| class="wikitable" style= "width: 95%;"
 +
|-
 +
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|Ammonia, Unionized || 2006 || Source Unknown || 12 || Estimated: 2021 || TBD
 +
|-
 +
|Chlorophyll-a || 2010 || Agriculture || 12 || Estimated: 2021 || TBD
 +
|-
 +
|Fecal Coliform || 2010 || Agriculture, natural sources || 12 || Estimated: 2021 || TBD
 +
|-
 +
|Low Dissolved Oxygen ||2010 || Agriculture || 12 || Estimated: 2021 || TBD
 +
|-
 +
|Turbidity || 2010 || Agriculture, Source unknown || 12 || Estimated: 2021 || TBD
 +
|-
 +
|pH || 2010 || Agriculture, Source unknown || 12 || Estimated: 2021 || TBD
 +
|-
 +
|}
  
* Branciforte Creek
+
'''Alamo Creek'''
** Chlorpyrifos, Category 5A
+
{| class="wikitable" style= "width: 95%;"
** Enterococcus, Category 5A
+
|-
** Escherichia coli (E. coli), Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
** Fecal Coliform, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
** Sedimentation/Siltation, Category 5B
+
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|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
 +
|}
  
 +
====Salinas Valley Watershed====
 +
Impaired water bodies in the Salinas Watershed listed downstream to upstream & north to south.
  
* Carneros Creek
 
** Ammonia (Unionized), Category 5A
 
** Chlorophyll-a, Category 5A
 
** Fecal Coliform, Category 5A
 
** Low Dissolved Oxygen, Category 5A
 
** Turbidity, Category 5A
 
** pH, Category 5A
 
For more information, go to [[The Carneros Watershed]]
 
  
 +
'''Moro Cojo Slough'''
 +
{| class="wikitable" style= "width: 95%;"
 +
|-
 +
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|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>
 +
|-
 +
|E. Coli|| 2010 || Agriculture, Boat Discharges, Grazing, Natural Sources, Unknown || 62 || TBD || Estimated 2021
 +
|-
 +
|Low Dissolved Oxygen|| 2002 || Source Unknown || 62 || TBD || Estimated 2021
 +
|-
 +
|Pesticides|| 2002 || Agriculture, Grazing, Riparian Vegetation Removal, Unknown || 62 || Estimated 2021 || No data since 2006
 +
|-
 +
|Sedimentation/Siltation|| 2002 || Agriculture, Construction/Land Development, Nonpoint source || 62 || Estimated 2021 || No data since 2006
 +
|-
 +
|Total Coliform|| 2010 || Source Unknown || 62 || Estimated 2021 || TBD
 +
|-
 +
| pH || 2010 || Agriculture, Boat Discharges, Grazing, Natural Sources, Removal of Riparian Vegetation, Unknown || 62 || Estimated 2021 || TBD
 +
|}
  
* Chualar Creek
+
'''Old Salinas River Estuary'''
** Ammonia (Unionized), Category 5A
+
{| class="wikitable" style= "width: 95%;"
** Chlorpyrifos, Category 5A
+
|-
** Diazinon, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
** Escherichia coli (E. coli), Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
** Fecal Coliform, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
** Nitrate, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''
** Temperature, Category 5A
+
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
** Turbidity, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
** Unknown Toxicity, Category 5A
+
|-
** pH, Category 5A
+
|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]
 +
|-
 +
|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>
 +
|-
 +
|}
  
 +
'''Old Salinas River'''
 +
{| class="wikitable" style= "width: 95%;"
 +
|-
 +
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|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] 
 +
|-
 +
|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
 +
|-
 +
|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
 +
|-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]
 +
|-
 +
|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>
 +
|-
 +
|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]
 +
|-
 +
|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]
 +
|-
 +
|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>
 +
|-
 +
|Turbidity || 2010 || Agriculture, Other urban runoff || 3.8 || Estimated: 2013 || TBD
 +
|-
 +
|Unknown Toxicity || 2010 || Agriculture, Other urban runoff || 3.8 || Estimated: 2013 || TBD
 +
|-
 +
|pH || 2010 || Agriculture, Other urban runoff || 3.8 || Estimated: 2013 || TBD
 +
|}
  
* Espinosa Slough
+
'''Salinas River Lagoon (North)'''
** Ammonia (Unionized), Category 5A
+
{| class="wikitable" style= "width: 95%;"
** Diazinon, Category 5A
+
|-
** Nitrate, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
** Pesticides, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
** Priority Organics, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
** Sediment Toxicity, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''
** Turbidity, Category 5A
+
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
** Unknown Toxicity, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
** pH, Category 5A
+
|-
 +
|Pesticides|| 1992 || Agriculture || 197 || TBD || TBD
 +
|-
 +
|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
 +
|-
 +
|}
  
 +
'''Majors Creek'''
 +
{| class="wikitable" style= "width: 95%;"
 +
|-
 +
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|Copper || 2010 || Source unknown, Urban runoff/Storm sewers || Estimated: 2021 || TBD
 +
|-
 +
|E. Coli || 2010 || Natural Sources, Source unknown, Urban runoff/storm sewers || Estimated: 2021 || TBD
 +
|-
 +
|Lead || 2010 || Source unknown, Urban runoff/storm sewers || Estimated: 2021 || TBD
 +
|-
 +
|Zinc || 2010 || Source unknown, Urban runoff/storm sewers || Estimated: 2021 || TBD 
 +
|-
 +
|}
  
* Elkhorn Slough
+
'''Blanco Drain'''
** Low Dissolved Oxygen, Category 5A
+
{| class="wikitable" style= "width: 95%;"
** Pesticides, Category 5A
+
|-
** Sedimentation/Siltation, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
** Total Coliform, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
** pH, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|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]
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|Turbidity || 2010 || Agriculture, Removal of riparian vegetation || 15 || Estimated: 2013 || TBD
 +
|-
 +
|}
  
 +
'''Tembladero Slough'''
 +
{| class="wikitable" style= "width: 95%;"
 +
|-
 +
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|Chlorophyll-a || 2010 || Agriculture, Grazing, Removal of riparian vegetation, Urban runoff/storm sewers || 5.5 || Estimated: 2013 || TBD
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|Enterococcus || 2010 || Agriculture, Grazing related sources, Urban runoff/storm sewers || 5.5 || Estimated: 2013 || TBD, See Fecal Coliform
 +
|-
 +
|E. Coli || 2010 || Agriculture, Grazing related sources, Urban runoff/storm sewers, Natural sources || 5.5 || Estimated: 2013 || TBD, See Fecal Coliform
 +
|-
 +
|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> 
 +
|-
 +
|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>
 +
|-
 +
|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]
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|Total Coliform || 2010 || Agriculture, grazing related sources, natural sources, urban runoff/storm sewers || 5.5 || Estimated: 2013 || TBD, see also Fecal Coliform
 +
|-
 +
|Turbidity || 2010 || Agriculture, grazing related sources, natural sources, urban runoff/storm sewers || 5.5 || Estimated: 2013 || TBD
 +
|-
 +
|Unknown Toxicity || 2010 || Agriculture, grazing related sources, natural sources, urban runoff/storm sewers || 5.5 || Estimated: 2013 || TBD
 +
|-
 +
|pH || 2010 || Agriculture, grazing related sources, natural sources, urban runoff/storm sewers || 5.5 || Estimated: 2013 || TBD
 +
|-
 +
|}
  
* Gabilan Creek. ([http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_e.shtml Listing], [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_f/00865.shtml  Fact Sheet]
+
'''Salinas Reclamation Canal'''
** Fecal Coliform, Low Priority, Category 5A
+
{| class="wikitable" style= "width: 95%;"
** Nitrate, High Priority, Category 5A
+
|-
** pH, Low Priority, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
** Turbidity, Low Priority, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
** Unknown Toxicity, Low Priority, Category 5A 
+
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
** Ammonia, High Priority, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
** Sediment toxicity, Low Priority, Category 5A
+
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|Copper || 2010 || Agriculture, Grazing, Urban runoff--Industrial Permitted & Non industrial permitted, urban runoff/storm sewers || 7.7 || Estimated: 2018 || TBD
 +
|-
 +
|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>
 +
|-
 +
|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]
 +
|-
 +
|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>
 +
|-
 +
|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]
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|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
 +
|-
 +
|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>
 +
|-
 +
|Turbidity || 2010 || Agriculture, Grazing, Removal of riparian vegetation, urban runoff-- Industrial and Non industrial permitted, urban runoff/storm sewers || 7.7 || Estimated: 2013 || TBD
 +
|-
 +
|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
 +
|-
 +
|pH || 2010 || Agriculture, Grazing, Removal of riparian vegetation, urban runoff-- Industrial and Non industrial permitted, urban runoff/storm sewers || 7.7 || Estimated: 2013 || TBD
 +
|-
 +
|}
  
 +
'''Gabilan Creek'''
 +
{| class="wikitable" style= "width: 95%;"
 +
|-
 +
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|Turbidity || 2010 || Agriculture, Grazing, Other urban runoff || 6.4 || Estimated: 2013 || TBD
 +
|-
 +
|pH || 2010 || Agriculture, Grazing, Other urban runoff || 6.4 || Estimated: 2013 || TBD
 +
|-
 +
|}
  
* Harkins Slough
+
'''Natividad Creek'''
** Chlorophyll-a, Category 5A
+
{| class="wikitable" style= "width: 95%;"
** Low Dissolved Oxygen, Category 5A
+
|-
** Pathogens, Category 5B
+
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|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>
 +
|-
 +
|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]
 +
|-
 +
|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]
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|Temperature, water || 2010 || Agriculture, Grazing, Other urban runoff, removal of riparian vegetation || 7 || Estimated: 2013 || TBD
 +
|-
 +
|Turbidity || 2010 || Agriculture, Grazing, Other urban runoff, removal of riparian vegetation || 7 || Estimated: 2013 || TBD
 +
|-
 +
|Unknown Toxicity || 2010 ||  Agriculture, Grazing, Other urban runoff, removal of riparian vegetation || 7 || Estimated: 2013 || TBD
 +
|-
 +
|pH || 2010 || Agriculture, Grazing, Other urban runoff || 7 || Estimated: 2013 || TBD
 +
|-
 +
|}
  
 +
'''Alisal Creek'''
 +
{| class="wikitable" style= "width: 95%;"
 +
|-
 +
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|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]
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|Sodium || 2010 || Agriculture, nonpoint source, urban runoff/storm sewers || 16 || Estimated: 2018 || TBD
 +
|-
 +
|}
 +
 +
'''Alisal Slough<Ref>[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2012state_ir_reports/00873.shtml#22625 Supporting Info for Alisal Creek]</ref>'''
 +
{| class="wikitable" style= "width: 95%;"
 +
|-
 +
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|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]
 +
|-
 +
|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]
 +
|-
 +
|Sediment Toxicity || 2010||'''2012:''' Source Unknown|| 7.3 ||  TBD || Estimated 2013
 +
|-
 +
|Unknown Toxicity (Chlorpyrifos), 5A || 2010 || '''2012:''' Source Unknown|| 7.3 || See Lower Salinas River || Estimated 2025
 +
|}
  
* Lompico Creek
+
'''Quail Creek'''
** Nutrients, Category 5B
+
{| class="wikitable" style= "width: 95%;"
** Pathogens, Category 5A
+
|-
** Sedimentation/Siltation, Category 5B
+
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|E. Coli || 2010 || Agriculture, Grazing, Nurseries || 402 || Estimated: 2013 || TBD, See also Fecal Coliform
 +
|-
 +
|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>
 +
|-
 +
|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]
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|Temperature, water || 2010 || Agriculture, Removal of Riparian Vegetation || 4.2 || Estimated: 2013 || TBD
 +
|-
 +
|Turbidity || 2010 || Agriculture, Grazing, Removal of Riparian Vegetation || 4.2 || Estimated: 2013 || In Development
 +
|-
 +
|Unknown Toxicity || 2010 || Agriculture, Grazing, Nurseries || 4.2 || Estimated: 2013 || TBD 
 +
|-
 +
|}
  
 +
'''Chualar Creek'''
 +
{| class="wikitable" style= "width: 95%;"
 +
|-
 +
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|E. Coli || 2010 || Agriculture, Natural Sources, Other urban runoff || 14 || TBD, See also Fecal Coliform
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|Temperature, water|| 2010 || Agriculture, other urban runoff, removal of riparian vegetation || 14 || Estimated: 2013 || TBD
 +
|-
 +
|Turbidity|| 2010 || Agriculture, other urban runoff, removal of riparian vegetation || 14 || Estimated: 2013 || TBD
 +
|-
 +
|Unknown Toxicity|| 2010 || Agriculture, Urban Runoff/Storm Sewers|| 14 || Estimated: 2013 || TBD
 +
|-
 +
|pH|| 2010 || Agriculture, Urban Runoff/Storm Sewers|| 14 || Estimated: 2013 || TBD
 +
|-
 +
|}
  
* Moro Cojo Slough
+
'''Salinas River (Lower, estuary to near Gonzales Rd crossing)'''
** Ammonia (Unionized), Category 5A
+
{| class="wikitable" style= "width: 95%;"
** Escherichia coli (E. coli), Category 5A
+
|-
** Low Dissolved Oxygen, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
** Pesticides, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
** Sedimentation/Siltation, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
** Total Coliform, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
** pH, Category 5A
+
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|Chlordane || 2010 || Unknown || 31 || Estimated: 2013 || TBD
 +
|-
 +
|Chloride || 2010 || Agriculture, Grazing, Natural Sources, other urban runoff || 31 || Estimated: 2018 || TBD
 +
|-
 +
|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>
 +
|-
 +
|DDD (Dichlorodiphenyldichloroethane)|| 2010 || Source Unknown|| 31 || October 7, 2011 || See Diazinon & Chlorpyrifos <ref name="Lower Salinas C&D TMDL"></ref>
 +
|-
 +
|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>
 +
|-
 +
|Dieldrin || 2010 || Source Unknown || 31 || October 7, 2011 || See Diazinon & Chlorpyrifos <ref name="Lower Salinas C&D TMDL"></ref>
 +
|-
 +
|Electrical Conductivity || 2010 || Source Unknown || 31 || Estimated: 2013 || TBD
 +
|-
 +
|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
 +
|-
 +
|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]
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|PCBs (Polychlorinated biphenyls) || 2010 || Source Unknown || 31 || Estimated: 2013 || TBD
 +
|-
 +
|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>
 +
|-
 +
|Sodium || 2010 || Source Unknown || 31 || Estimated: 2018 || TBD
 +
|-
 +
|Total Dissolved Solids || 2010 || Source Unknown || 31 || Estimated: 2018 || TBD
 +
|-
 +
|Toxaphene || 1994 || Source unknown || 31 || Estimated: 2013 || TBD
 +
|-
 +
|Turbidity || 2010 || Agriculture, Grazing, Other urban runoff || 31 || Estimated: 2013 || TBD
 +
|-
 +
|Unknown Toxicity || 2010 || Agriculture, Grazing, Other urban runoff || 31 || Estimated: 2013 || TBD
 +
|-
 +
|pH || 2010 || Source Unknown || 31 || Estimated: 2013 || TBD
 +
|-
 +
|}
  
 +
'''Salinas River (middle, near Gonzales Rd crossing to confluence with Nacimiento River)'''
 +
{| class="wikitable" style= "width: 95%;"
 +
|-
 +
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|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]
 +
|-
 +
|Fecal Coliform || 2010 || Agriculture, Grazing, Natural Sources, Other Urban Runoff || 72 || Estimated: 2021 || TBD, See also Lower Salinas River
 +
|-
 +
|Pesticides || 2002 || Agriculture Return Flows, Agriculture, Agriculture-irrigation tailwater, Agriculture-storm runoff, Irrigated Crop production, Nonpoint source || 72 || Estimated: 2021 || TBD
 +
|-
 +
|Temperature, Water || 2010 || Agriculture, Grazing, Other Urban runoff || 72 || Estimated: 2021 || TBD
 +
|-
 +
|Turbidity || 2010 || Agriculture, Grazing, Other Urban runoff || 72 || Estimated: 2021 || TBD
 +
|-
 +
|Unknown Toxicity || 2010 || Agriculture, Grazing, Other Urban runoff || 72 || Estimated: 2021 || TBD
 +
|-
 +
|pH || 2010 || Agriculture, Grazing, Natural sources, Other Urban runoff || 72 || Estimated: 2021 || TBD
 +
|-
 +
|}
  
* Moss Landing Harbor
+
'''Salinas River (upper,confluence of Nacimiento River to Santa Margarita Reservoir)'''
** Chlorpyrifos, Category 5A
+
{| class="wikitable" style= "width: 95%;"
** Diazinon, Category 5A
+
|-
** Low Dissolved Oxygen, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
** Nickel, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
** Pathogens, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
** Pesticides, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
** Sediment Toxicity, Category 5A
+
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
** Sedimentation/Siltation, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
** pH, Category 5A
+
|-
 +
|Chloride|| 2002 || Agriculture, Pasture grazing- Riparian and/or Upland, Urban Runoff/Storm Sewers || 49 || Estimated: 2021 || TBD
 +
|-
 +
|Sodium || 2002 || Agriculture, Pasture grazing- Riparian and/or Upland, Urban Runoff/Storm Sewers || 49 || Estimated: 2021 || TBD
 +
|-
 +
|pH|| 2010 || Agriculture, Pasture grazing- Riparian and/or Upland, Natural Sources, Urban Runoff/Storm Sewers || 49 || Estimated: 2021 || TBD
 +
|-
 +
|}
  
 +
'''Espinosa Lake'''
 +
{| class="wikitable" style= "width: 95%;"
 +
|-
 +
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|}
  
* Natividad Creek
+
'''Espinosa Slough'''
** Ammonia (Unionized), Category 5A
+
{| class="wikitable" style= "width: 95%;"
** Escherichia coli (E. coli), Category 5A
+
|-
** Low Dissolved Oxygen, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
** Nitrate, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
** Sediment Toxicity, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
** Temperature, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
** Turbidity, Category 5A
+
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
** Unknown Toxicity, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
** pH, Category 5A
+
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|Priority Organics || 1996 || Nonpoint source || 1.4 || Estimated: 2013 || TBD
 +
|-
 +
|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>
 +
|-
 +
|Turbidity || 2010 || Agriculture || 1.4 || Estimated: 2013 || TBD
 +
|-
 +
|Unknown Toxicity || 2010 || Agriculture || 1.4 || Estimated: 2013 || TBD
 +
|-
 +
|pH || 2010 || Agriculture || 1.4 || Estimated: 2013 || TBD
 +
|-
 +
|}
  
  
* Old Salinas River
+
'''Esperanza Creek'''
** Chlorophyll-a, Category 5A
+
{| class="wikitable" style= "width: 95%;"
** Chlorpyrifos, Category 5A
+
|-
** Diazinon, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
** Escherichia coli (E. coli), Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
** Fecal Coliform, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
** Low Dissolved Oxygen, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
** Nitrate, Category 5A
+
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
** Sediment Toxicity, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
** Turbidity, Category 5A
+
|-
** Unknown Toxicity, Category 5A
+
|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>
** pH, Category 5A
+
|-
 +
|}
  
 +
'''Arroyo Seco River'''
 +
{| class="wikitable" style= "width: 95%;"
 +
|-
 +
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|Fecal Coliform || 2010 || Unknown || 43 || Estimated: 2021 || TBD
 +
|-
 +
|Temperature, water || 2010 || Unknown || 43 || Estimated 2021 || TBD
 +
|-
 +
|}
  
* Old Salinas River Estuary
+
'''San Lorenzo Creek'''
** Nutrients, Category 5A
+
{| class="wikitable" style= "width: 95%;"
** Pesticides, Category 5A
+
|-
 +
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|Boron || 2002 || Unknown || 49 || Estimated: 2021 || TBD
 +
|-
 +
|Chloride || 2010 || Grazing-Related sources, Natural source, Unknown sources || 49 || Estimated 2021 || TBD
 +
|-
 +
|Electrical Conductivity || 2010 || Natural Sources || 49 || Estimated 2021 || TBD
 +
|-
 +
|E. Coli || 2010 || Grazing Related Sources, Natural Sources || 49 || Estimated: 2021 || TBD, see also Fecal Coliform
 +
|-
 +
|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>
 +
|-
 +
|Sodium || 2010 || Grazing Related sources, Natural Sources || 49 || Estimated: 2120 || TBD
 +
|-
 +
|pH || 2010 ||Grazing Related sources, Natural Sources || 49 || Estimated: 2120 || TBD
 +
|-
 +
|}
  
 +
'''San Antonio River'''
 +
{| class="wikitable" style= "width: 95%;"
 +
|-
 +
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|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>
 +
|-
 +
|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>
 +
|-
 +
|}
  
* Pajaro River
+
'''San Antonio Resevoir'''
** Boron, Category 5A
+
{| class="wikitable" style= "width: 95%;"
** Chlordane, Category 5A
+
|-
** Chloride, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
** Chlorpyrifos, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
** DDD (Dichlorodiphenyldichloroethane), Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
** Dieldrin, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''
** Escherichia coli (E. coli), Category 5A
+
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
** Fecal Coliform, Category 5A
+
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
** Low Dissolved Oxygen, Category 5A
+
|-
** Nitrate, Category 5B
+
|Mercury || 2010 || Source Unknown || 5417 || Estimated: 2021 || TBD
** Nutrients, Category 5B
+
|-
** PCBs (Polychlorinated biphenyls), Category 5A
+
|}
** Sedimentation/Siltation, Category 5B
+
** Sodium, Category 5A
+
** Turbidity, Category 5A
+
** pH, Category 5A
+
  
  
* Quail Creek
 
** Ammonia (Unionized), Category 5A
 
** Chlorpyrifos, Category 5A
 
** Diazinon, Category 5A
 
** Escherichia coli (E. coli), Category 5A
 
** Fecal Coliform, Category 5A
 
** Low Dissolved Oxygen, Category 5A
 
** Nitrate, Category 5A
 
** Sediment Toxicity, Category 5A
 
** Temperature, Category 5A
 
** Turbidity, Category 5A
 
** Unknown Toxicity, Category 5A
 
  
 +
'''Aptos Creek'''
 +
{| class="wikitable" style= "width: 95%;"
 +
|-
 +
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|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>
 +
|-
 +
|Sedimentation/Siltation, 5A||1990||Channel erosion, land development||8.4||Estimated 2021|| TBD
 +
|-
 +
|}
  
* Salinas Reclamation Canal, Lower
+
* Harkins Slough
** Ammonia (Unionized), Category 5A
+
** Chlorophyll-a, Category 5A
** Chlorpyrifos, Category 5A
+
** Copper, Category 5A
+
** Diazinon, Category 5A
+
** Escherichia coli (E. coli), Category 5A
+
** Fecal Coliform, Category 5A
+
 
** Low Dissolved Oxygen, Category 5A
 
** Low Dissolved Oxygen, Category 5A
** Nitrate, Category 5A
+
** Pathogens, Category 5B
** Pesticides, Category 5A
+
** Priority Organics, Category 5A
+
** Sediment Toxicity, Category 5A
+
** Turbidity, Category 5A
+
** Unknown Toxicity, Category 5A
+
** pH, Category 5A
+
 
+
 
+
* Salinas River (lower, estuary to near Gonzales Rd crossing). ([http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_e.shtml Listing], [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_f/00860.shtml#5282 Fact Sheet]) 
+
** Chlordane, Category 5A
+
** Chloride, medium priority, Category 5A
+
** Chlorpyrifos, high priority, Category 5A
+
** DDD (Dichlorodiphenyldichloroethane, Category 5A
+
** Diazinon, high priority, Category 5A
+
** Dieldrin, Category 5A
+
** Electrical Conductivity, low priority, Category 5A
+
** Enterococcus, low priority, Category 5A
+
** Escherichia coli (E. coli), Category 5A
+
** Fecal Coliform, low priority, Category 5A, TMDL in Progress,  [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/docs/salinas/salinas_fecal_col_data_anal_rpt_june05_deliverable.pdf  Report]
+
** Nitrate, high priority, Category 5A
+
** PCBs (Polychlorinated biphenyls), Category 5A
+
** Pesticides, Category 5A
+
** pH, low priority, Category 5A
+
** Sodium, low priority, Category 5A
+
** Total Dissolved Solids, low priority, Category 5A
+
** Turbidity, low priority, Category 5A
+
** Unknown Toxicity, high priority, Category 5A
+
  
 
* San Lorenzo River
 
** Chlordane, Category 5A
 
** Chlorpyrifos, Category 5A
 
** Nutrients, Category 5B
 
** PCBs (Polychlorinated biphenyls), Category 5A
 
** Pathogens, Category 5A
 
** Sedimentation/Siltation, Category 5B
 
 
 
* Tembladero Slough. ([http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_e.shtml Listing], [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_f/00856.shtml#5630 Fact Sheet])
 
** Fecal Coliform, SWRCB approved, low priority, Category 5A
 
** Chlorophyll-a, CCRWQCB approved, low priority, Category 5A
 
** Chlorpyrifos, CCRWQCB approved, high priority, Category 5A
 
** Diazinon, CCRWQCB approved, high priority, Category 5A
 
** Escherichia coli (E. Coli), CCRWQCB approved, low priority, Category 5A
 
** Nitrate, CCRWQCB approved,high priority, Category 5A 
 
** Sediment Toxicity, CCRWQCB approved, low priority, Category 5A
 
** Total Coliform, CCRWQCB approved, low priority, Category 5A
 
** Turbidity, CCRWQCB approved, low priority, Category 5A
 
** Unknown Toxicity, CCRWQCB approved,high priority, Category 5A
 
** pH, CCRWQCB approved, low priority, Category 5A
 
** Nutrients, CCRWQCB approved, high priority, Category 5A
 
** Pesticides, CCRWQCB approved, Category 5A
 
 
 
* Watsonville Slough. ([http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_e.shtml Listing], [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/303d/appendix_f/00812.shtml Fact Sheet])
 
** Pathogens, USEPA approved TMDL, [http://www.swrcb.ca.gov/centralcoast/board_decisions/adopted_orders/2006/2006_0025_wat_path_proj_rpt.pdf Project Report], low priority, Category 5B
 
** Pesticides, TMDL in Progress, [http://www.swrcb.ca.gov/centralcoast/water_issues/programs/tmdl/docs/watsonville/ph4_prj_rpt_watsonville_slough_pest_update.pdf Preliminary Project Report], low priority, Category 5A
 
** Chlorpyrifos, low priority, Category 5A
 
** Diazinon, low priority, Category 5A
 
** Total Coliform, low priority, Category 5A
 
** Pathogens, low priority, Category 5B
 
** Pesticides, low priority, Category 5A
 
** Low Dissolved Oxygen, low priority, Category 5A
 
 
 
* Zayante Creek
 
** Chlorpyrifos, Category 5A
 
** Fecal Coliform, Category 5A
 
** Sedimentation/Siltation, Category 5B
 
  
 
==Links==
 
==Links==
 
* [[TMDLs in the Monterey Bay Region of California]]
 
* [[TMDLs in the Monterey Bay Region of California]]
 
* [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]]
 
* [[The 303d list of Impaired Waterbodies in the Monterey Bay Region]]
 +
* [[Lower Salinas River Watershed Nutrient TMDL - Implementation and Monitoring Progress]]
 
* [[TMDL]]
 
* [[TMDL]]
 
* [[Monterey Bay Region]]
 
* [[Monterey Bay Region]]
 +
* [[Clean Water Act]]
 +
* [[Watershed Issues on the Central Coast of California]]
 +
* [[Central Coast Water Quality Coalition]]
 +
 +
==References==
 +
<references/>
  
 
== Disclaimer ==
 
== Disclaimer ==
 
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.
 
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.

Latest revision as of 10:14, 11 April 2016

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 CSUMB.

See also: The 303d list of Impaired Waterbodies in the Monterey Bay Region

Monterey Bay Area Listings

See also: Summary of listing categories

Pajaro River Watershed

Impaired water bodies listed downstream to upstream & north to south.

Watsonville Slough

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
Low Dissolved Oxygen 2010 Agriculture, Removal of Riparian vegetation, Urban runoff/storm sewers 6.2 Estimated: 2021 TBD
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 [1]
Pesticides 1996 Agriculture, Agriculture-irrigation tailwater, Agriculture storm runoff, Irrigated crop production, nonpoint source 6.2 Estimated: 2021 TBD
Turbidity 2010 Agriculture, Removal of riparian vegetation, Urban runoff/storm sewers Estimated: 2021 TBD

Beach Road Ditch

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
Low Dissolved Oxygen 2010 Agriculture, Removal of Riparian vegetation 0.78 Estimated: 2021 TBD
Nitrate 2010 Agriculture, Removal of Riparian vegetation 0.78 Estimated: 2021 TBD
Turbidity 2010 Agriculture, Removal of Riparian vegetation 0.78 Estimated: 2021 TBD
pH 2010 Agriculture 0.78 Estimated: 2021 TBD

Pajaro River

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
Boron 2006 Agriculture, Other urban runoff, Saltwater intrustion, Source unknown 32 Estimated: 2021 TBD
Chlordane 2010 Source unknown 32 Estimated: 2021 TBD
Chloride 2010 Agriculture, Natural sources, Other urban runoff, Saltwater intrusion 32 Estimated: 2021 TBD
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 [2]
DDD (Dichlorodiphenyldichloroethane) 2010 Source unknown 32 Estimated: 2013 TBD
Dieldrin 2010 Source Unknown 32 Estimated 2021 TBD
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 [3]
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 [3]
Low Dissolved Oxygen 2010 Agriculture, Grazing-related sources, Other urban runoff, Removal of riparian vegetation, Unknown nonpoint source 32 Estimated: 2021 TBD
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 [4]
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 [5]
PCBs (Polychlorinated biphenyls) 2010 Source unknown 32 Estimated: 2021 TBD
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 Pajaro River Sediment Project report Figure 4.4, Page 20
Sodium 2010 Agriculture, Natural sources, Other urban runoff, Saltwater intrusion, Unknown nonpoint source 32 Estimated: 2021 TBD
Turbidity 2010 Agriculture, Grazing, Other urban runoff, Removal of riparian vegetation 32 Estimated: 2021 TBD
pH 2010 Unknown 32 Estimated: 2021 TBD

Bolsa Neuva Watershed

Impaired water bodies listed downstream to upstream, North to south

Moss Landing Harbor

Pollutant First Listed Possible Sources Assessed Area (acres) US EPA TMDL Approval Date TMDL
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[6]
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 [6]
Low Dissolved Oxygen 2010 Source unknown 79 October 13, 2015 See Lower Salinas River Nutrient TMDL
Nickel 2010 Agriculture, Dredging, Marinas and Recreational boating, Natural sources, Other urban runoff, Unknown sources 79 Estimated: 2021 TBD
Pathogens 1992 Agriculture, Boat discharges/vessel wastes, nonpoint source 79 Estimated: 2021 TBD
Pesticides 1992 Agriculture, Irrigated and specialty crop production 79 Estimated: 2021 TBD
Sediment Toxicity 2010 Agriculture, Boatyards, Dredging, Grazing related sources, marinas and recreational boating, Other urban runoff 79 Estimated: 2021 TBD
Sedimentation/Silatation 1996 Agriculture, agriculture-storm runoff, channel erosion, dredging, erosion/siltation, hydromodification, irrigated crop production, nonpoint source 79 Estimated: 2021 TBD
pH 2010 Source Unknown 79 Estimated: 2021 TBD

Bennett Slough

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
Chlorophyll-a 2010 Source Unknown 1.9 Estimated: 2021 TBD, Also See Lower Salinas TMDL
Low Dissolved Oxygen 2010 Source Unknown 1.9 Estimated: 2021 TBD
pH 2010 Source Unknown 1.9 Estimated: 2021 TBD

Elkhorn Slough

Pollutant First Listed Possible Sources Assessed Area (acres) US EPA TMDL Approval Date TMDL
Low Dissolved Oxygen 2010 Agriculture, Grazing related sources, Natural sources, Urban runoff/storm sewers 2034 Estimated: 2021 TBD
Pesticides 1990 Agriculture return flows, agriculture, agriculture-storm runoff, contaminated sediments, erosion/siltation, irrigated crop production, nonpoint source 2034 Estimated: 2021 TBD
Sedimentation/Siltation 1996 Agriculture, agriculture-storm runoff, channel erosion, irrigated crop production, nonpoint source 2034 Estimated: 2021 TBD
Total Coliform 2010 Source unknown 2034 Estimated: 2021 TBD
pH 2010 Agriculture, grazing related sources, natural sources, urban runoff/storm sewers 2034 Estimated: 2021 TBD

Watsonville Creek

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
E. Coli 2010 Agriculture, Grazing related sources, Natural Sources 5.1 Estimated: 2021 TBD
Fecal Coliform 2010 Agriculture, Grazing related sources, Natural Sources 5.1 Estimated: 2021 TBD
Low Dissolved Oxygen 2010 Agriculture, Grazing related sources, Groundwater loadings, Removal of riparian vegetation 5.1 Estimated: 2021 TBD
Nitrate 2010 Agriculture, Grazing related sources, Groundwater loadings, Removal of riparian vegetation 5.1 Estimated: 2021 TBD
pH 2010 Agriculture, Grazing related sources, Groundwater loadings, Removal of riparian vegetation 5.1 Estimated: 2021 TBD

Carneros Creek

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
Ammonia, Unionized 2006 Source Unknown 12 Estimated: 2021 TBD
Chlorophyll-a 2010 Agriculture 12 Estimated: 2021 TBD
Fecal Coliform 2010 Agriculture, natural sources 12 Estimated: 2021 TBD
Low Dissolved Oxygen 2010 Agriculture 12 Estimated: 2021 TBD
Turbidity 2010 Agriculture, Source unknown 12 Estimated: 2021 TBD
pH 2010 Agriculture, Source unknown 12 Estimated: 2021 TBD

Alamo Creek

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
Fecal Coliform, 5A 2002 2010: Agriculture, Grazing, Natural Sources [7] 2012: Source Unknown 7.8 Est. 2021 TBD

Salinas Valley Watershed

Impaired water bodies in the Salinas Watershed listed downstream to upstream & north to south.


Moro Cojo Slough

Pollutant First Listed Possible Sources Assessed Area (acres) US EPA TMDL Approval Date TMDL
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 [8]
E. Coli 2010 Agriculture, Boat Discharges, Grazing, Natural Sources, Unknown 62 TBD Estimated 2021
Low Dissolved Oxygen 2002 Source Unknown 62 TBD Estimated 2021
Pesticides 2002 Agriculture, Grazing, Riparian Vegetation Removal, Unknown 62 Estimated 2021 No data since 2006
Sedimentation/Siltation 2002 Agriculture, Construction/Land Development, Nonpoint source 62 Estimated 2021 No data since 2006
Total Coliform 2010 Source Unknown 62 Estimated 2021 TBD
pH 2010 Agriculture, Boat Discharges, Grazing, Natural Sources, Removal of Riparian Vegetation, Unknown 62 Estimated 2021 TBD

Old Salinas River Estuary

Pollutant First Listed Possible Sources Assessed Area (acres) US EPA TMDL Approval Date TMDL
Nutriensts 1992 Agriculture, Agriculture-irrigation tailwater, irrigated crop production, nonpoint source 16 October 13, 2015 See Lower Salinas River Nutrient TMDL
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[6]

Old Salinas River

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
Chlorophyll-a 2010 Agriculture, Dredging, Other urban runoff, Removal of Riparian Vegetation 3.8 TBD TMDL needed, Also See Lower Salinas TMDL
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
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
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.[9]
Low Dissolved Oxygen 2010 Agriculture, Marinas and Recreational Boating, Other Urban Runoff, Removal of Riparian Vegetation 3.8 October 13, 2015 See Lower Salinas River Nutrient TMDL
Nitrate 2010 Agriculture, Other urban runoff 3.8 October 13, 2015 See Lower Salinas River Nutrient TMDL
Sediment Toxicity 2010 Agriculture, Other urban runoff 3.8 Estimated: 2013 Will be heard @ Central Coast Water Board hearing May 12-13 2016 [10]
Turbidity 2010 Agriculture, Other urban runoff 3.8 Estimated: 2013 TBD
Unknown Toxicity 2010 Agriculture, Other urban runoff 3.8 Estimated: 2013 TBD
pH 2010 Agriculture, Other urban runoff 3.8 Estimated: 2013 TBD

Salinas River Lagoon (North)

Pollutant First Listed Possible Sources Assessed Area (acres) US EPA TMDL Approval Date TMDL
Pesticides 1992 Agriculture 197 TBD TBD
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

Majors Creek

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
Copper 2010 Source unknown, Urban runoff/Storm sewers Estimated: 2021 TBD
E. Coli 2010 Natural Sources, Source unknown, Urban runoff/storm sewers Estimated: 2021 TBD
Lead 2010 Source unknown, Urban runoff/storm sewers Estimated: 2021 TBD
Zinc 2010 Source unknown, Urban runoff/storm sewers Estimated: 2021 TBD

Blanco Drain

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
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[6]
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 [6]
Low Dissolved Oxygen 2010 Agriculture, groundwater loadings 15 October 13, 2015 See Lower Salinas River Nutrient TMDL
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 [8]
Pesticides 1998 Agriculture return flows, Agriculture, Agriculture-irrigation tailwater, Agriculture storm runoff, Irrigated crop production, nonpoint source 15 October 7, 2011 See Chlorpyrifos & Diazinon[6]
Turbidity 2010 Agriculture, Removal of riparian vegetation 15 Estimated: 2013 TBD

Tembladero Slough

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
Chlorophyll-a 2010 Agriculture, Grazing, Removal of riparian vegetation, Urban runoff/storm sewers 5.5 Estimated: 2013 TBD
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[6]
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 [6]
Enterococcus 2010 Agriculture, Grazing related sources, Urban runoff/storm sewers 5.5 Estimated: 2013 TBD, See Fecal Coliform
E. Coli 2010 Agriculture, Grazing related sources, Urban runoff/storm sewers, Natural sources 5.5 Estimated: 2013 TBD, See Fecal Coliform
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.[9]
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 [8]
Nutrients 1996 Agriculture Return flows, agriculture, agriculture-irrigation tailwater, agriculture-storm runoff, irrigated crop production, nonpoint source 5.5 October 13, 2015 See Lower Salinas River Nutrient TMDL
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[6]
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[10]
Total Coliform 2010 Agriculture, grazing related sources, natural sources, urban runoff/storm sewers 5.5 Estimated: 2013 TBD, see also Fecal Coliform
Turbidity 2010 Agriculture, grazing related sources, natural sources, urban runoff/storm sewers 5.5 Estimated: 2013 TBD
Unknown Toxicity 2010 Agriculture, grazing related sources, natural sources, urban runoff/storm sewers 5.5 Estimated: 2013 TBD
pH 2010 Agriculture, grazing related sources, natural sources, urban runoff/storm sewers 5.5 Estimated: 2013 TBD

Salinas Reclamation Canal

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
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 [8]
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[6]
Copper 2010 Agriculture, Grazing, Urban runoff--Industrial Permitted & Non industrial permitted, urban runoff/storm sewers 7.7 Estimated: 2018 TBD
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 [6]
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 Lower Salinas Fecal Coliform TMDL
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.[9]
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 Lower Salinas River Nutrients TMDL
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 [8]
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[6]
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
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[10]
Turbidity 2010 Agriculture, Grazing, Removal of riparian vegetation, urban runoff-- Industrial and Non industrial permitted, urban runoff/storm sewers 7.7 Estimated: 2013 TBD
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
pH 2010 Agriculture, Grazing, Removal of riparian vegetation, urban runoff-- Industrial and Non industrial permitted, urban runoff/storm sewers 7.7 Estimated: 2013 TBD

Gabilan Creek

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
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 [8]
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.[9]
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 [8]
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[10]
Turbidity 2010 Agriculture, Grazing, Other urban runoff 6.4 Estimated: 2013 TBD
pH 2010 Agriculture, Grazing, Other urban runoff 6.4 Estimated: 2013 TBD

Natividad Creek

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
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 [8]
E. Coli 2010 Agriculture, Grazing, Other urban runoff 7 Estimated: 2013 TBD, See also Lower Salinas Fecal Coliform TMDL
Low Dissolved Oxygen 2010 Agriculture, Grazing, Removal of riparian vegetation, Other urban runoff 7 October 13, 2015 See Lower Salinas River Nutrients TMDL
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 [8]
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[10]
Temperature, water 2010 Agriculture, Grazing, Other urban runoff, removal of riparian vegetation 7 Estimated: 2013 TBD
Turbidity 2010 Agriculture, Grazing, Other urban runoff, removal of riparian vegetation 7 Estimated: 2013 TBD
Unknown Toxicity 2010 Agriculture, Grazing, Other urban runoff, removal of riparian vegetation 7 Estimated: 2013 TBD
pH 2010 Agriculture, Grazing, Other urban runoff 7 Estimated: 2013 TBD

Alisal Creek

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
Chlorophyll-a 2010 Agriculture 16 Estimated: 2013 TBD, Also See Lower Salinas TMDL
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.[9]
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 [8]
Sodium 2010 Agriculture, nonpoint source, urban runoff/storm sewers 16 Estimated: 2018 TBD

Alisal Slough[11]

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
Low Dissolved Oxygen 2010 2010:Agriculture 2012: Source Unknown [12] 7.3 October 13, 2015 See Lower Salinas River Nutrients TMDL
Nitrate 2010 2010:Agriculture 2012: Source Unknown 7.3 October 13, 2015 See Lower Salinas River Nutrient TMDL
Sediment Toxicity 2010 2012: Source Unknown 7.3 TBD Estimated 2013
Unknown Toxicity (Chlorpyrifos), 5A 2010 2012: Source Unknown 7.3 See Lower Salinas River Estimated 2025

Quail Creek

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
Ammonia (Unionized) 2010 Agriculture, Grazing, Nurseries 4.2 October 13, 2015 Year Round un-ionized ammonia as N must not exceed 0.025mg/L [8]
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[6]
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 [6]
E. Coli 2010 Agriculture, Grazing, Nurseries 402 Estimated: 2013 TBD, See also Fecal Coliform
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.[9]
Low Dissolved Oxygen 2010 Agriculture, Grazing, Nurseries, Removal of Riparian Vegetation 4.2 October 13, 2015 TBD, See also Lower Salinas River Nutrient TMDL
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 [8]
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[10]
Temperature, water 2010 Agriculture, Removal of Riparian Vegetation 4.2 Estimated: 2013 TBD
Turbidity 2010 Agriculture, Grazing, Removal of Riparian Vegetation 4.2 Estimated: 2013 In Development
Unknown Toxicity 2010 Agriculture, Grazing, Nurseries 4.2 Estimated: 2013 TBD

Chualar Creek

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
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 [8]
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[6]
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 [6]
E. Coli 2010 Agriculture, Natural Sources, Other urban runoff 14 TBD, See also Fecal Coliform
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.[9]
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 [8]
Temperature, water 2010 Agriculture, other urban runoff, removal of riparian vegetation 14 Estimated: 2013 TBD
Turbidity 2010 Agriculture, other urban runoff, removal of riparian vegetation 14 Estimated: 2013 TBD
Unknown Toxicity 2010 Agriculture, Urban Runoff/Storm Sewers 14 Estimated: 2013 TBD
pH 2010 Agriculture, Urban Runoff/Storm Sewers 14 Estimated: 2013 TBD

Salinas River (Lower, estuary to near Gonzales Rd crossing)

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
Chlordane 2010 Unknown 31 Estimated: 2013 TBD
Chloride 2010 Agriculture, Grazing, Natural Sources, other urban runoff 31 Estimated: 2018 TBD
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[6]
DDD (Dichlorodiphenyldichloroethane) 2010 Source Unknown 31 October 7, 2011 See Diazinon & Chlorpyrifos [6]
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 [6]
Dieldrin 2010 Source Unknown 31 October 7, 2011 See Diazinon & Chlorpyrifos [6]
Electrical Conductivity 2010 Source Unknown 31 Estimated: 2013 TBD
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
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 Lower Salinas Fecal Coliform TMDL
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.[9]
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 [8]
PCBs (Polychlorinated biphenyls) 2010 Source Unknown 31 Estimated: 2013 TBD
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[6]
Sodium 2010 Source Unknown 31 Estimated: 2018 TBD
Total Dissolved Solids 2010 Source Unknown 31 Estimated: 2018 TBD
Toxaphene 1994 Source unknown 31 Estimated: 2013 TBD
Turbidity 2010 Agriculture, Grazing, Other urban runoff 31 Estimated: 2013 TBD
Unknown Toxicity 2010 Agriculture, Grazing, Other urban runoff 31 Estimated: 2013 TBD
pH 2010 Source Unknown 31 Estimated: 2013 TBD

Salinas River (middle, near Gonzales Rd crossing to confluence with Nacimiento River)

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
E. Coli 2010 Agriculture, Grazing, Land Development, Natural Sources, Other Urban Runoff 72 Estimated: 2021 See also Lower Salinas Watershed Fecal Coliform TMDL
Fecal Coliform 2010 Agriculture, Grazing, Natural Sources, Other Urban Runoff 72 Estimated: 2021 TBD, See also Lower Salinas River
Pesticides 2002 Agriculture Return Flows, Agriculture, Agriculture-irrigation tailwater, Agriculture-storm runoff, Irrigated Crop production, Nonpoint source 72 Estimated: 2021 TBD
Temperature, Water 2010 Agriculture, Grazing, Other Urban runoff 72 Estimated: 2021 TBD
Turbidity 2010 Agriculture, Grazing, Other Urban runoff 72 Estimated: 2021 TBD
Unknown Toxicity 2010 Agriculture, Grazing, Other Urban runoff 72 Estimated: 2021 TBD
pH 2010 Agriculture, Grazing, Natural sources, Other Urban runoff 72 Estimated: 2021 TBD

Salinas River (upper,confluence of Nacimiento River to Santa Margarita Reservoir)

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
Chloride 2002 Agriculture, Pasture grazing- Riparian and/or Upland, Urban Runoff/Storm Sewers 49 Estimated: 2021 TBD
Sodium 2002 Agriculture, Pasture grazing- Riparian and/or Upland, Urban Runoff/Storm Sewers 49 Estimated: 2021 TBD
pH 2010 Agriculture, Pasture grazing- Riparian and/or Upland, Natural Sources, Urban Runoff/Storm Sewers 49 Estimated: 2021 TBD

Espinosa Lake

Pollutant First Listed Possible Sources Assessed Area (acres) US EPA TMDL Approval Date TMDL
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[6]
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 [6]

Espinosa Slough

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
Ammonia, Unionized 2010 Agriculture 1.4 October 13, 2015 Year Round un-ionized ammonia as N must not exceed 0.025mg/L [8]
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 [6]
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 [8]
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[6]
Priority Organics 1996 Nonpoint source 1.4 Estimated: 2013 TBD
Sediment Toxicity 2010 Agriculture 1.4 Estimated: 2013 Will be heard at the May 12-13 2016 Central Coast Water Board hearing in Watsonville[10]
Turbidity 2010 Agriculture 1.4 Estimated: 2013 TBD
Unknown Toxicity 2010 Agriculture 1.4 Estimated: 2013 TBD
pH 2010 Agriculture 1.4 Estimated: 2013 TBD


Esperanza Creek

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
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 [8]

Arroyo Seco River

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
Fecal Coliform 2010 Unknown 43 Estimated: 2021 TBD
Temperature, water 2010 Unknown 43 Estimated 2021 TBD

San Lorenzo Creek

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
Boron 2002 Unknown 49 Estimated: 2021 TBD
Chloride 2010 Grazing-Related sources, Natural source, Unknown sources 49 Estimated 2021 TBD
Electrical Conductivity 2010 Natural Sources 49 Estimated 2021 TBD
E. Coli 2010 Grazing Related Sources, Natural Sources 49 Estimated: 2021 TBD, see also Fecal Coliform
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 [13]
Sodium 2010 Grazing Related sources, Natural Sources 49 Estimated: 2120 TBD
pH 2010 Grazing Related sources, Natural Sources 49 Estimated: 2120 TBD

San Antonio River

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
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 [14]
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 [14]

San Antonio Resevoir

Pollutant First Listed Possible Sources Assessed Area (acres) US EPA TMDL Approval Date TMDL
Mercury 2010 Source Unknown 5417 Estimated: 2021 TBD


Aptos Creek

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
Fecal Coliform, 5A 1990 Collection System Failure, Natural Sources, Onsite Wastewater Systems (Septic Tanks), Pasture Grazing-Riparian and/or Upland, Urban Runoff/Storm Sewers[15] 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)[16]
Sedimentation/Siltation, 5A 1990 Channel erosion, land development 8.4 Estimated 2021 TBD
  • Harkins Slough
    • Chlorophyll-a, Category 5A
    • Low Dissolved Oxygen, Category 5A
    • Pathogens, Category 5B


Links

References

  1. Watsonville Slough Pathogen TMDL
  2. Pajaro River watershed Chlorpyrifos and Diazinon TMDL
  3. 3.0 3.1 Pajaro River Fecal Coliform TMDL
  4. Pajaro River Nitrate TMDL
  5. Pajaro River Nutrient TMDL
  6. 6.00 6.01 6.02 6.03 6.04 6.05 6.06 6.07 6.08 6.09 6.10 6.11 6.12 6.13 6.14 6.15 6.16 6.17 6.18 6.19 6.20 6.21 6.22 6.23 6.24 LOWER SALINAS RIVER WATERSHED CHLORPYRIFOS AND DIAZINON TMDLS
  7. 2010 Integrated Report Alamo Creek Impairments
  8. 8.00 8.01 8.02 8.03 8.04 8.05 8.06 8.07 8.08 8.09 8.10 8.11 8.12 8.13 8.14 8.15 8.16 8.17 [1]
  9. 9.0 9.1 9.2 9.3 9.4 9.5 9.6 9.7 Lower Salinas Fecal Coliform TMDL
  10. 10.0 10.1 10.2 10.3 10.4 10.5 10.6 Salinas River Watershed Sediment Toxicity TMDL
  11. Supporting Info for Alisal Creek
  12. 2012 Integrated Report 303(d) list
  13. San Lorenzo Creek Fecal Coliform TMDL
  14. 14.0 14.1 San Antonio River Fecal Coliform TMDL
  15. [CCRWQCB Aptos Creek Impairments and Evidence CCRWQCB Aptos Creek Impairments and Evidence]
  16. US EPA Aptos TMDL Approval Letter

Disclaimer

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.