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

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(Monterey Bay Area Listings)
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====Salinas Valley Watershed====
 
====Salinas Valley Watershed====
 +
Impaired water bodies in the Salinas Watershed listed downstream to upstream & north to south.
  
====Alamo 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||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
 
|}
 
  
====Alisal Slough<Ref>[http://www.waterboards.ca.gov/water_issues/programs/tmdl/2012state_ir_reports/00873.shtml#22625 Supporting Info for Alisal Creek]</ref>====
+
'''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%;"
 
|-
 
|-
Line 41: Line 30:
 
|}
 
|}
  
====Aptos Creek====
+
'''Aptos Creek'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 57: Line 46:
 
|}
 
|}
  
====Moro Cojo Slough====
+
'''Moro Cojo Slough'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 82: Line 71:
 
|}
 
|}
  
====Old Salinas River Estuary====
+
'''Old Salinas River Estuary'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 98: Line 87:
 
|}
 
|}
  
====Old Salinas River====
+
'''Old Salinas River'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 130: Line 119:
 
|}
 
|}
  
====Salinas River Lagoon (North)====
+
'''Salinas River Lagoon (North)'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 146: Line 135:
 
|}
 
|}
  
====Blanco Drain====
+
'''Blanco Drain'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 170: Line 159:
 
|}
 
|}
  
====Tembladero Slough====
+
'''Tembladero Slough'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 210: Line 199:
 
|}
 
|}
  
====Salinas Reclamation Canal====
+
'''Salinas Reclamation Canal'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 250: Line 239:
 
|}
 
|}
  
====Gabilan Creek====
+
'''Gabilan Creek'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 274: Line 263:
 
|}
 
|}
  
====Natividad Creek====
+
'''Natividad Creek'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 304: Line 293:
 
|}
 
|}
  
====Alisal Creek====
+
'''Alisal Creek'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 324: Line 313:
 
|}
 
|}
  
====Salinas River (Lower, estuary to near Gonzales Rd crossing)====
+
'''Quail 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, 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>[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
 +
|-
 +
|}
 +
 
 +
'''Salinas River (Lower, estuary to near Gonzales Rd crossing)'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 374: Line 429:
 
|}
 
|}
  
====Salinas River (middle, near Gonzales Rd crossing to confluence with Nacimiento River)====
+
'''Salinas River (middle, near Gonzales Rd crossing to confluence with Nacimiento River)'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 400: Line 455:
 
|}
 
|}
  
====Salinas River (upper,confluence of Nacimiento River to Santa Margarita Reservoir)====
+
'''Salinas River (upper,confluence of Nacimiento River to Santa Margarita Reservoir)'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 418: Line 473:
 
|}
 
|}
  
====Quail Creek====
+
'''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 (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>[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
+
|-
+
|}
+
 
+
====Espinosa Lake====
+
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 500: Line 489:
 
|}
 
|}
  
====Espinosa Slough====
+
'''Espinosa Slough'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 531: Line 520:
  
  
====Esperanza Creek====
+
'''Esperanza Creek'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 545: Line 534:
 
|}
 
|}
  
====Arroyo Seco River====
+
'''Arroyo Seco River'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 561: Line 550:
 
|}
 
|}
  
====San Lorenzo Creek====
+
'''San Lorenzo Creek'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 587: Line 576:
 
|}
 
|}
  
====San Antolio River====
+
'''San Antonio River'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 603: Line 592:
 
|}
 
|}
  
====San Antonio Resevoir====
+
'''San Antonio Resevoir'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 617: Line 606:
 
|}
 
|}
  
====Moss Landing Harbor====
+
====Bolsa Neuva Watershed====
 +
Impaired water bodies listed downstream to upstream, North to south
 +
 
 +
'''Moss Landing Harbor'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 647: Line 639:
 
|}
 
|}
  
====Bennett Slough====
+
'''Bennett Slough'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 665: Line 657:
 
|}
 
|}
  
====Elkhorn Slough====
+
'''Elkhorn Slough'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 687: Line 679:
 
|}
 
|}
  
====Watsonville Creek====
+
'''Watsonville Creek'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 709: Line 701:
 
|}
 
|}
  
====Carneros Creek====
+
'''Carneros Creek'''
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
 
|-
 
|-
Line 731: Line 723:
 
|pH || 2010 || Agriculture, Source unknown || 12 || Estimated: 2021 || TBD
 
|pH || 2010 || Agriculture, Source unknown || 12 || Estimated: 2021 || TBD
 
|-
 
|-
 +
|}
 +
 +
'''Alamo 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||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
 
|}
 
|}
  

Revision as of 23:35, 3 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

Salinas Valley Watershed

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


Alisal Slough[1]

Pollutant First Listed Possible Sources Assessed Area (miles) US EPA TMDL Approval Date TMDL
Low Dissolved Oxygen, 5A 2010 2010:Agriculture 2012: Source Unknown [2] 7.3 October 13, 2015 See Lower Salinas River Nutrients 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[3] 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)[4]
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[5] 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 Estuary

Pollutant First Listed Possible Sources Assessed Area (acres) US EPA TMDL Approval Date TMDL
Nutriensts 1992 16 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.[7]
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 [8]
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

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 [9]
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.[7]
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 [9]
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 [9]
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.[7]
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 [9]
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[11]
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 [9]
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.[7]
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 [9]
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[12]
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 [9]
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 [9]
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[13]
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.[7]
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 [9]
Sodium 2010 Agriculture, nonpoint source, urban runoff/storm sewers 16 Estimated: 2018 TBD

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 [9]
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.[7]
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 [9]
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[14]
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 [9]
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.[7]
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 [9]
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.[7]
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 [9]
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 [9]
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 [9]
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[15]
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 [9]

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 [16]
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 [17]
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 [17]

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

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 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 [18] 2012: Source Unknown 7.8 Est. 2021 TBD


  • Boulder Creek
    • Sedimentation/Siltation, Category 5B


  • Branciforte Creek
    • Chlorpyrifos, Category 5A
    • Enterococcus, Category 5A
    • Escherichia coli (E. coli), Category 5A
    • Fecal Coliform, Category 5A
    • Sedimentation/Siltation, Category 5B


  • 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


  • Elkhorn Slough
    • Low Dissolved Oxygen, Category 5A
    • Pesticides, Category 5A
    • Sedimentation/Siltation, Category 5A
    • Total Coliform, Category 5A
    • pH, Category 5A


  • Gabilan Creek. (Listing, Fact Sheet)
    • Fecal Coliform, Low Priority, Category 5A
    • Nitrate, High Priority, Category 5A
    • pH, Low Priority, Category 5A
    • Turbidity, Low Priority, Category 5A
    • Unknown Toxicity, Low Priority, Category 5A
    • Ammonia, High Priority, Category 5A
    • Sediment toxicity, Low Priority, Category 5A


  • Harkins Slough
    • Chlorophyll-a, Category 5A
    • Low Dissolved Oxygen, Category 5A
    • Pathogens, Category 5B


  • Lompico Creek
    • Nutrients, Category 5B
    • Pathogens, Category 5A
    • Sedimentation/Siltation, Category 5B
  • Moss Landing Harbor
    • Chlorpyrifos, Category 5A
    • Diazinon, Category 5A
    • Low Dissolved Oxygen, Category 5A
    • Nickel, Category 5A
    • Pathogens, Category 5A
    • Pesticides, Category 5A
    • Sediment Toxicity, Category 5A
    • Sedimentation/Siltation, Category 5A
    • pH, Category 5A


  • Natividad Creek
    • Ammonia (Unionized), Category 5A
    • Escherichia coli (E. coli), Category 5A
    • Low Dissolved Oxygen, Category 5A
    • Nitrate, Category 5A
    • Sediment Toxicity, Category 5A
    • Temperature, Category 5A
    • Turbidity, Category 5A
    • Unknown Toxicity, Category 5A
    • pH, Category 5A


  • Pajaro River
    • Boron, Category 5A
    • Chlordane, Category 5A
    • Chloride, Category 5A
    • Chlorpyrifos, Category 5A
    • DDD (Dichlorodiphenyldichloroethane), Category 5A
    • Dieldrin, Category 5A
    • Escherichia coli (E. coli), Category 5A
    • Fecal Coliform, Category 5A
    • Low Dissolved Oxygen, Category 5A
    • Nitrate, Category 5B
    • Nutrients, Category 5B
    • PCBs (Polychlorinated biphenyls), Category 5A
    • Sedimentation/Siltation, Category 5B
    • Sodium, Category 5A
    • Turbidity, Category 5A
    • pH, Category 5A


  • Salinas Reclamation Canal, Lower
    • Ammonia (Unionized), 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
    • Nitrate, Category 5A
    • 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). (Listing, 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, 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. (Listing, 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. (Listing, Fact Sheet)
    • Pathogens, USEPA approved TMDL, Project Report, low priority, Category 5B
    • Pesticides, TMDL in Progress, 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

References

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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.
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