APPENDIXC Detailed Table of Receiving Water Quality Conditions in the River WMA

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Table C-6-1 Receiving Water Conditions in the Tijuana River WMA

Temporal Extent Hydrologic Receiving Water Condition Basis Area Wet Dry

Lower Watershed Pacific Ocean Tijuana Shoreline at 3/4 Impairment of REC-1 due to Total Coliform, Valley x x 2010 303(d) List mile North of Fecal Coliform, and Enterococcus. (911.1) Tijuana River Tijuana Pacific Ocean Impairment of REC-1 due to Total Coliform, Valley Shoreline at end of x x 2010 303(d) List Fecal Coliform, and Enterococcus (911.1) Seacoast Drive Pacific Ocean Tijuana Shoreline, Tijuana Impairment of REC-1 due to Total Coliform Valley x x 2010 303(d) List HU, at Monument and Fecal Coliform (911.1) Road Pacific Ocean Tijuana Shoreline, Tijuana Impairment of REC-1 due to Total Coliform, Valley x x 2010 303(d) List HU, at the US Fecal Coliform, and Enterococcus (911.1) Border Pacific Ocean Tijuana Shoreline, Tijuana Impairment of REC-1 due to Total Coliform, Valley x x 2010 303(d) List HU, at Tijuana Fecal Coliform, and Enterococcus (911.1) River mouth Pacific Ocean Tijuana Shoreline, Tijuana Possible presence of pathogens including Public workshop Valley x HU, at Tijuana viruses and specifically Hepatitis A. testimony. (911.1) River mouth Tijuana Impairment of REC-1 due to Indicator Valley Tijuana River x x 2010 303(d) List Bacteria. (911.1) Tijuana Sampling results at Elevated Fecal Coliforms and Enterococcus Valley Tijuana River x x MLS reported in LTEA at NPDES monitoring location. (911.1) and Weston Reports. Tijuana Valley Tijuana River Impairment of WARM due to Solids. x x 2010 303(d) List (911.1) Tijuana Impairment of WARM due to Valley Tijuana River x x 2010 303(d) List Sedimentation/Siltation. (911.1) Assessment at MLS Tijuana Poor to fair stream substrate of mostly silt station reported in Valley Tijuana River x and consolidated clay. LTEA and 2011-12 (911.1) Weston Report.

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Temporal Extent Hydrologic Receiving Water Condition Basis Area Wet Dry

Tijuana Poor stream substrate with stream bed and Assessment at TWAS- Valley Tijuana River banks of unconsolidated sand and silt and x 2 station reported in (911.1) riparian buffer lacking canopy. LTEA. Sampling results at Tijuana MLS reported in LTEA Valley Tijuana River Elevated TSS at NPDES sampling location. x x and Weston Report (911.1) and at TWAS-2 station reported in LTEA. Sampling results at Tijuana MLS reported in LTEA Elevated Turbidity at NPDES sampling Valley Tijuana River x x and Weston Report location. (911.1) and at TWAS-2 station reported in LTEA. Tijuana Valley Tijuana River Impairment of REC-2 due to Trash. x x 2010 303(d) List (911.1) Assessment at trash Tijuana Presence of trash at assessment site in assessment site Valley Tijuana River x 911.12 HSA. reported in 2010-11 (911.1) Weston Report. 2010 303(d) List Sampling results at Tijuana Impairment of WARM due to Total Nitrogen MLS reported in LTEA Valley Tijuana River x x as N. and Weston Report (911.1) and at TWAS-2 station reported in LTEA. Sampling results at Tijuana MLS reported in LTEA Elevated Ammonia as N at NPDES sampling Valley Tijuana River x x and Weston Report location. (911.1) and at TWAS-2 station reported in LTEA. Tijuana Sampling results at Elevated Nitrite as N at NPDES sampling Valley Tijuana River x MLS reported in location. (911.1) Weston Report. 2010 303(d) List Sampling results at Tijuana MLS reported in LTEA Valley Tijuana River Impairment of WARM due to Phosphorus. x x and Weston Report (911.1) and at TWAS-2 station reported in LTEA.

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Temporal Extent Hydrologic Receiving Water Condition Basis Area Wet Dry

Tijuana Impairment of WARM due to Eutrophic Valley Tijuana River x x 2010 303(d) List conditions. (911.1) Sampling results at Tijuana MLS reported in LTEA Valley Tijuana River Benthic algae at NPDES sampling location. x and at TWAS-2 station (911.1) reported in LTEA. Tijuana Valley Tijuana River Impairment of WARM due to Low DO. x x 2010 303(d) List (911.1) Sampling results at Tijuana MLS reported in LTEA Elevated BOD and COD at NPDES sampling Valley Tijuana River x x and Weston Report location. (911.1) and at TWAS-2 station reported in LTEA. 2010 303(d) List Sampling results at Tijuana MLS reported in LTEA Valley Tijuana River Impairment of WARM due to Pesticides. x x and Weston Report (911.1) and at TWAS-2 station reported in LTEA. 2010 303(d) List Sampling results at Tijuana Impairment of REC-1 due to Surfactants MLS reported in LTEA Valley Tijuana River x x (MBAS). and Weston Report (911.1) and at TWAS-2 station reported in LTEA. Tijuana Valley Tijuana River Impairment of WARM due to Selenium. x x 2010 303(d) List (911.1) Tijuana Valley Tijuana River Impairment of WARM due to Trace Elements. x x 2010 303(d) List (911.1) Tijuana Impairment of MUN due to Synthetic Valley Tijuana River x x 2010 303(d) List Organics. (911.1) 2010 303(d) List Sampling results at Tijuana MLS reported in LTEA Valley Tijuana River Impairment of WARM due to Toxicity. x x and Weston Report (911.1) and at TWAS-2 station reported in LTEA.

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Temporal Extent Hydrologic Receiving Water Condition Basis Area Wet Dry

Sampling results at Tijuana MLS reported in LTEA Benthic Alterations (poor to very poor IBI Valley Tijuana River x x and Weston Report scores) at NPDES monitoring location. (911.1) and at TWAS-2 station reported in LTEA. Tijuana Sampling results at Valley Tijuana River Elevated oil and grease x TWAS-2 reported in (911.1) LTEA. Tijuana Tijuana River Impairment of REC-1 due to Indicator Valley x x 2010 303(d) List Estuary Bacteria. (911.1) Tijuana Tijuana River Valley Impairment of MAR due to Turbidity. x x 2010 303(d) List Estuary (911.1) Tijuana Tijuana River Valley Impairment of REC-2 due to Trash. x x 2010 303(d) List Estuary (911.1) Tijuana Tijuana River Impairment of EST due to Eutrophic Valley x x 2010 303(d) List Estuary Conditions. (911.1) Tijuana Tijuana River Valley Impairment of MAR due to Low DO. x x 2010 303(d) List Estuary (911.1) Tijuana Tijuana River Valley Impairment of EST due to Pesticides. x x 2010 303(d) List Estuary (911.1) Tijuana Tijuana River Valley Impairment of EST due to Lead. x x 2010 303(d) List Estuary (911.1) Tijuana Tijuana River Valley Impairment of EST due to Nickel. x x 2010 303(d) List Estuary (911.1) Tijuana Tijuana River Valley Impairment of COMM due to Thallium. x x 2010 303(d) List Estuary (911.1)

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Temporal Extent Hydrologic Receiving Water Condition Basis Area Wet Dry

Upper Watershed Potrero Creek Impairment of WARM due to Selenium. x x 2010 303(d) List (911.2) Sampling results at Potrero SMC03510 station Tecate Creek Elevated chloride at SMC Station. x (911.2) reported in Weston Report Sampling results at Potrero SMC03510 station Tecate Creek Elevated sulfate at SMC Station. x (911.2) reported in Weston Report. Sampling results at Potrero Benthic Alterations (poor to very poor IBI SMC03510 station Tecate Creek x (911.2) scores) at SMC Station. reported in Weston Report. Sampling results at Potrero SMC03510 station Tecate Creek Elevated Total Nitrogen as N at SMC Station. x (911.2) reported in Weston Report. Sampling results at Potrero SMC03510 station Tecate Creek Elevated Phosphorus at SMC Station. x (911.2) reported in Weston Report. Sampling results at Potrero SMC03510 station Tecate Creek Elevated TDS at SMC Station. x (911.2) reported in Weston Report. Upper Watershed Potrero Trash Assessment Tecate Creek Presence of trash. x (911.2) reported in WURMP annual reports. Barrett Lake Impairment of WARM due to Total Nitrogen Barrett Lake x x 2010 303(d) List (911.3) as N. Barrett Lake Barrett Lake Impairment of MUN due to Manganese. x x 2010 303(d) List (911.3) Barrett Lake Barrett Lake Impairment of MUN due to Perchlorate. x x 2010 303(d) List (911.3) Barrett Lake Barrett Lake Impairment of MUN due to Color. x x 2010 303(d) List (911.3) Barrett Lake Barrett Lake Impairment of MUN due to pH. x x 2010 303(d) List (911.3)

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Temporal Extent Hydrologic Receiving Water Condition Basis Area Wet Dry

Monument Pine Valley Creek Impairment of MUN due to Turbidity. x x 2010 303(d) List (911.4) (Upper) Morena Morena Reservoir Impairment of MUN due to Ammonia as N. x x 2010 303(d) List (911.5) Morena Morena Reservoir Impairment of WARM due to Phosphorus. x x 2010 303(d) List (911.5) Morena Morena Reservoir Impairment of MUN due to Manganese. x x 2010 303(d) List (911.5) Morena Morena Reservoir Impairment of MUN due to Color. x x 2010 303(d) List (911.5) Morena Morena Reservoir Impairment of MUN due to pH. x x 2010 303(d) List (911.5) Cottonwood Creek Cottonwood (Tijuana River Impairment of WARM due to Selenium. x x 2010 303(d) List (911.6) watershed) Sampling results at Campo Benthic Alterations (poor to very poor IBI TWAS-1 reported in Campo Creek x x (911.8) scores) at NPDES monitoring location. LTEA and Weston Report. Sampling results at Campo Campo Creek Benthic algae at NPDES sampling location. x TWAS-1 reported in (911.8) LTEA. Sampling results at Campo Elevated fecal coliforms at NPDES TWAS-1 reported in Campo Creek x x (911.8) monitoring location. LTEA and Weston Report. Sampling results at Campo Elevated Enterococcus at NPDES monitoring TWAS-1 reported in Campo Creek x (911.8) location. LTEA and Weston Report. Sampling results at Campo Campo Creek Elevated TSS at NPDES sampling location. x TWAS-1 reported in (911.8) LTEA. Sampling results at Campo Elevated Turbidity at NPDES sampling TWAS-1 reported in Campo Creek x (911.8) location. LTEA and Weston Report. Sampling results at Campo Elevated Surfactants (MBAS) at NPDES Campo Creek x TWAS-1 reported in (911.8) sampling location. LTEA. Sampling results at Campo Elevated Pesticides at NPDES sampling Campo Creek x TWAS-1 reported in (911.8) location. LTEA.

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Temporal Extent Hydrologic Receiving Water Condition Basis Area Wet Dry

Sampling results at Campo TWAS-1 reported in Campo Creek Elevated TDS at NPDES sampling location. x x (911.8) LTEA and Weston Report. Sampling results at Campo Elevated Phosphorus at NPDES sampling Campo Creek x TWAS-1 reported in (911.8) location. Weston Report. Sampling results at Campo TWAS-1 reported in Campo Creek Toxicity x (911.8) LTEA and Weston Report. Upper Watershed Campo Trash Assessment Campo Creek Presence of trash. x (911.8) reported in WURMP annual reports.

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