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

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====Alisal Slough<Ref>[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2012state_ir_reports/00873.shtml#22625 Supporting Info for Alisal Creek]</ref>====
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====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%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
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|Low Dissolved Oxygen, 5A||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 TMDL]
 
|Low Dissolved Oxygen, 5A||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 TMDL]
 
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|-
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|Nitrate, 5A||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 TMDL]
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|Nitrate, 5A||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, 5A || 2010||'''2012:''' Source Unknown|| 7.3 ||  TBD || Estimated 2013
 
|Sediment Toxicity, 5A || 2010||'''2012:''' Source Unknown|| 7.3 ||  TBD || Estimated 2013
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|}
 
|}
  
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==Old Salinas River==
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{| class="wikitable" style= "width: 95%;"
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|-
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|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
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|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
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|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
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|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (miles)'''
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|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
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|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
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|-
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|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] 
 +
|-
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|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
 +
|-
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|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]
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|-
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|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>
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|-
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|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]
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|-
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|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]
 +
|-
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|Sediment Toxicity || 2010 || Agriculture, Other urban runoff || Estimated: 2013 || TBD
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|-
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|Turbidity || 2010 || Agriculture, Other urban runoff || Estimated: 2013 || TBD
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|-
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|Unknown Toxicity || 2010 || Agriculture, Other urban runoff || Estimated: 2013 || TBD
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|-
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|pH || 2010 || Agriculture, Other urban runoff || Estimated: 2013 || TBD
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|}
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==Salinas River Lagoon (North)==
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{| class="wikitable" style= "width: 95%;"
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|-
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|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
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|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
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|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
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|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''
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|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
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|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
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|-
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|Pesticides|| 1992 || Agriculture || 197 || TBD || TBD
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|-
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|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
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|-
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|}
  
 
* Blanco Drain
 
* Blanco Drain
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** Pathogens, Category 5A
 
** Pathogens, Category 5A
 
** Sedimentation/Siltation, Category 5B
 
** Sedimentation/Siltation, Category 5B
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* Moro Cojo Slough
 
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** Ammonia (Unionized), Category 5A
 
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** Escherichia coli (E. coli), Category 5A
 
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** Low Dissolved Oxygen, Category 5A
 
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** Pesticides, Category 5A
 
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** Sedimentation/Siltation, Category 5A
 
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** Total Coliform, Category 5A
 
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** pH, Category 5A
 
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* Moss Landing Harbor
 
* Moss Landing Harbor
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** Sediment Toxicity, Category 5A
 
** Sediment Toxicity, Category 5A
 
** Temperature, Category 5A
 
** Temperature, Category 5A
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** Turbidity, Category 5A
 
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** Unknown Toxicity, Category 5A
 
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** pH, Category 5A
 
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* Old Salinas River
 
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** Chlorophyll-a, Category 5A
 
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** Chlorpyrifos, Category 5A
 
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** Diazinon, Category 5A
 
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** Escherichia coli (E. coli), Category 5A
 
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** Fecal Coliform, Category 5A
 
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** Low Dissolved Oxygen, Category 5A
 
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** Nitrate, Category 5A
 
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** Sediment Toxicity, Category 5A
 
 
** Turbidity, Category 5A
 
** Turbidity, Category 5A
 
** Unknown Toxicity, Category 5A
 
** Unknown Toxicity, Category 5A

Revision as of 17:30, 31 March 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

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 [1] 2012: Source Unknown 7.8 Est. 2021 TBD

====Alisal Slough====[2]

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
Low Dissolved Oxygen, 5A 2010 2010:Agriculture 2012: Source Unknown [3] 7.3 October 13, 2015 See Lower Salinas River TMDL
Nitrate, 5A 2010 2010:Agriculture 2012: Source Unknown 7.3 October 13, 2015 See Lower Salinas River Nutrient TMDL
Sediment Toxicity, 5A 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

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[4] 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)[5]
Sedimentation/Siltation, 5A 1990 Channel erosion, land development 8.4 Estimated 2021 TBD

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[6] See Lower Salinas River
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

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.[7]


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