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
|
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.[8]
|
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 [9]
|
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
|
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[7]
|
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 [7]
|
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 [10]
|
Pesticides |
1998 |
Agriculture return flows, Agriculture, Agriculture-irrigation tailwater, Agriculture storm runoff, Irrigated crop production, nonpoint source |
15 |
October 7, 2011 |
See Chlorpyrifos & Diazinon[7]
|
Turbidity |
2010 |
Agriculture, Removal of riparian vegetation |
15 |
Estimated: 2013 |
TBD
|
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[7]
|
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 [7]
|
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.[8]
|
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 [10]
|
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[7]
|
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[11]
|
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
|
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 [10]
|
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[7]
|
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 [7]
|
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.[8]
|
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 [10]
|
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[7]
|
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[12]
|
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
|
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 [10]
|
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.[8]
|
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 [10]
|
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[13]
|
Turbidity |
2010 |
Agriculture, Grazing, Other urban runoff |
6.4 |
Estimated: 2013 |
TBD
|
pH |
2010 |
Agriculture, Grazing, Other urban runoff |
6.4 |
Estimated: 2013 |
TBD
|
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 [10]
|
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 [10]
|
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[14]
|
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
|
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.[8]
|
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 [10]
|
Sodium |
2010 |
Agriculture, nonpoint source, urban runoff/storm sewers |
16 |
Estimated: 2018 |
TBD
|
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[7]
|
DDD (Dichlorodiphenyldichloroethane) |
2010 |
Source Unknown |
31 |
October 7, 2011 |
See Diazinon & Chlorpyrifos [7]
|
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 [7]
|
Dieldrin |
2010 |
Source Unknown |
31 |
October 7, 2011 |
See Diazinon & Chlorpyrifos [7]
|
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.[8]
|
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 [10]
|
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[7]
|
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
|
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
|
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 [10]
|
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[7]
|
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 [7]
|
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.[8]
|
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 [10]
|
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[15]
|
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
|
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 [10]
|
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[7]
|
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 [7]
|
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.[8]
|
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 [10]
|
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
|
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 [17]
|
Sodium |
2010 |
Grazing Related sources, Natural Sources |
49 |
Estimated: 2120 |
TBD
|
pH |
2010 |
Grazing Related sources, Natural Sources |
49 |
Estimated: 2120 |
TBD
|
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[7]
|
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 [7]
|
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
|
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
|
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
|
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