TMDL Document for CHOLLAS CREEK METALS TMDL

TMDL ID:	35761	TMDL Name:	CHOLLAS CREEK METALS TMDL
State/Tribe:	California	TMDL Date:	12/18/2008
EPA Action:	EPA Approved

TMDL Documents

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Document Type	Comments
TMDL Decision Letter
TMDL Document

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TMDL Pollutant: Copper

Total Waste Load Allocation:			Total Load Allocation:
Explicit Margin Of Safety:			Implicit Margin Of Safety:	Not Reported
Units for Total Waste Load Allocation and Total Load Allocation:			TMDL Pollutant Source Type:	Point/Nonpoint Source
TMDL End Point:	ACUTE CONDITIONS (CRITERIA MAXIMUM CONCENTRATION): (1)*(0.96)*{E^{0.9422* IN(HARDNESS)-1.700}} CHRONIC CONDITIONS (CRITERIA CONTINUOUS CONCENTRATION): (1)*(0.96)*{E^{0.8545* IN(HARDNESS)-1.702}}

NPDES Allocation for Pollutant: Copper
NPDES ID	Other Non PCS Identification	Waste Load Allocation	Units
CAS000003
CAS000001
CAS000002
CAG919001
CAG19001
CAS108758
CA0107867
CA0109169
CAS000004

Listed Water Causes of Impairment for Copper Click on the underlined Waterbody ID for a Waterbody Report. Click on the underlined "Waterbody Map" literal for a map of the Assessment Unit.
Waterbody ID	Waterbody Name	Map	Cycles Listed	Cause(s) of Impairment Addressed
CAR9082200019990208140725	Chollas Creek	Waterbody Map	1996, 1998, 2002, 2004, 2006, 2010	Copper

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TMDL Pollutant: Lead

Total Waste Load Allocation:			Total Load Allocation:
Explicit Margin Of Safety:			Implicit Margin Of Safety:	Not Reported
Units for Total Waste Load Allocation and Total Load Allocation:			TMDL Pollutant Source Type:	Point/Nonpoint Source
TMDL End Point:	ACUTE CONDITIONS (CRITERIA MAXIMUM CONCENTRATION): [1.46203 ¿ 0.145712 * LN (HARDNESS)] * {E^ [1.273 * LN (HARDNESS) - 1.460]} CHRONIC CONDITIONS (CRITERIA CONTINUOUS CONCENTRATION): [1.46203 ¿ 0.145712 * LN (HARDNESS)] * {E^[{1.273 * LN (HARDNESS)} - 4.705]}

NPDES Allocation for Pollutant: Lead
NPDES ID	Other Non PCS Identification	Waste Load Allocation	Units
CAS000003
CAS108758
CA0107867
CA0109169
CAS000004
CAS000001
CAS000002
CAG99002
CAG919001
CAG19001

Listed Water Causes of Impairment for Lead Click on the underlined Waterbody ID for a Waterbody Report. Click on the underlined "Waterbody Map" literal for a map of the Assessment Unit.
Waterbody ID	Waterbody Name	Map	Cycles Listed	Cause(s) of Impairment Addressed
CAR9082200019990208140725	Chollas Creek	Waterbody Map	1996, 1998, 2002, 2004, 2006, 2010	Lead

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TMDL Pollutant: Zinc

Total Waste Load Allocation:			Total Load Allocation:
Explicit Margin Of Safety:			Implicit Margin Of Safety:	Not Reported
Units for Total Waste Load Allocation and Total Load Allocation:			TMDL Pollutant Source Type:	Point/Nonpoint Source
TMDL End Point:	ACUTE CONDITIONS (CRITERIA MAXIMUM CONCENTRATION): (0.978) * {E^ [0.8473 * LN (HARDNESS) + 0.884]} CHRONIC CONDITIONS (CRITERIA CONTINUOUS CONCENTRATION): (0.986) * {E^[0.8473 * LN (HARDNESS) + 0.884]}

NPDES Allocation for Pollutant: Zinc
NPDES ID	Other Non PCS Identification	Waste Load Allocation	Units
CAS000003
CAS108758
CA0107867
CA0109169
CAS000004
CAS000001
CAS000002
CAG99002
CAG919001
CAG19001

Listed Water Causes of Impairment for Zinc Click on the underlined Waterbody ID for a Waterbody Report. Click on the underlined "Waterbody Map" literal for a map of the Assessment Unit.
Waterbody ID	Waterbody Name	Map	Cycles Listed	Cause(s) of Impairment Addressed
CAR9082200019990208140725	Chollas Creek	Waterbody Map	1996, 1998, 2002, 2004, 2006, 2010	Zinc

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