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

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(→‎Alisal SloughSupporting Info for Alisal Creek)
(→‎Monterey Bay Area Listings)
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====Aptos Creek====
 
====Aptos Creek====
 
{| class="wikitable" style= "width: 95%;"
 
{| class="wikitable" style= "width: 95%;"
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|+ style="text-align:left;"|Fecal Coliform, 5A
 
 
|-
 
|-
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|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
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|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 
|-
 
|-
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| 1990 ||Collection System Failure, Natural Sources, Onsite Wastewater Systems (Septic Tanks), Pasture Grazing-Riparian and/or Upland, Urban Runoff/Storm Sewers<ref name= "CCRWQCB Aptos Creek Impairments and Evidence"> [CCRWQCB Aptos Creek Impairments and Evidence CCRWQCB Aptos Creek Impairments and Evidence]</ref>|| 8.4 || January 20, 2011||Fecal Coliform concentration shall not exceed - 200 MPN/100mL (w/ no less than 5 samples for any 30-day period) or 400 MPN/100mL (for no more than 10% of single samples collected during any 30-day period)<ref name="US EPA Aptos TMDL approval"> [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/aptos/pathogens/aptos_path_epa_approval_ltr.pdf US EPA Aptos TMDL Approval Letter]</ref>
+
|Fecal Coliform, 5A|| 1990 ||Collection System Failure, Natural Sources, Onsite Wastewater Systems (Septic Tanks), Pasture Grazing-Riparian and/or Upland, Urban Runoff/Storm Sewers<ref name= "CCRWQCB Aptos Creek Impairments and Evidence"> [CCRWQCB Aptos Creek Impairments and Evidence CCRWQCB Aptos Creek Impairments and Evidence]</ref>|| 8.4 || January 20, 2011||Fecal Coliform concentration shall not exceed - 200 MPN/100mL (w/ no less than 5 samples for any 30-day period) or 400 MPN/100mL (for no more than 10% of single samples collected during any 30-day period)<ref name="US EPA Aptos TMDL approval"> [http://www.waterboards.ca.gov/rwqcb3/water_issues/programs/tmdl/docs/aptos/pathogens/aptos_path_epa_approval_ltr.pdf US EPA Aptos TMDL Approval Letter]</ref>
 +
|-
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|Sedimentation/Siltation, 5A||1990||Channel erosion, land development||8.4||Estimated 2021|| TBD
 
|}
 
|}
  
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* Sedimentation/Siltation, Category 5A
+
====Moro Cojo Slough====
 +
{| class="wikitable" style= "width: 95%;"
 +
|-
 +
|style="vertical-align:bottom; text-align:left;"|'''Pollutant'''
 +
|style="vertical-align:bottom; text-align:left;"|'''First Listed'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Possible Sources'''
 +
|style="vertical-align:bottom; text-align:left;"|'''Assessed Area (acres)'''
 +
|style="width:100px;vertical-align:bottom; text-align:left;"|'''US EPA TMDL Approval Date'''
 +
|style="vertical-align:bottom; text-align:left;"|'''TMDL'''
 +
|-
 +
|Ammonia (Unionized), 5A|| 2006 ||Agriculture, Boat Discharges, Grazing, Unknown|| 62 || October 13, 2015<ref name="Lower Salinas TMDL"> [https://iaspub.epa.gov/waters10/attains_impaired_waters.tmdl_report?p_tmdl_id=65081&p_report_type= TMDL for Lower Salinas River and Reclamation Canal Basin and the Moro Cojo Slough Subwatershed Nitrogen Compounds and Orthophosphate]|| 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
 +
|}
  
  

Revision as of 16:24, 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 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]


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