Final California 2020 Integrated Report (303(d) List/305(b) Report)

Supporting Information

Regional Board 3 - Central Coast Region

Water Body Name:	Espinosa Lake
Water Body ID:	CAL3091900020020117151744
Water Body Type:	Lake & Reservoir


DECISION ID	132017	Region 3
Espinosa Lake

Pollutant:	Chlorpyrifos
Final Listing Decision:	Delist from 303(d) list (being addressed by USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (being addressed by USEPA approved TMDL)(2018)
Revision Status	Revised
Reason for Delisting:	Flaws in original listing
TMDL Name:	Lower Salinas River Chlorpyrifos and Diazinon TMDL
TMDL Project Code:	133
Date TMDL Approved by USEPA:	10/07/2011
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be removed from the CWA section 303(d) List because this waterbody was originally listed based on data that were determined to be of poor quality. Therefore, this waterbody will be delisted, due to flaws in the original listing. There are no new data assessed.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be removed from the section 303(d) list because the original basis for listing was flawed.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 132017, Chlorpyrifos	Region 3
Espinosa Lake

LOE ID:

232870

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

n/a

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

n/a

Temporal Representation:

n/a

Environmental Conditions:

n/a

QAPP Information:

n/a

QAPP Information Reference(s):

Placeholder reference 2006 303(d)


DECISION ID	132018	Region 3
Espinosa Lake

Pollutant:	Diazinon
Final Listing Decision:	Delist from 303(d) list (being addressed by USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (being addressed by USEPA approved TMDL)(2018)
Revision Status	Revised
Reason for Delisting:	Flaws in original listing
TMDL Name:	Lower Salinas River Chlorpyrifos and Diazinon TMDL
TMDL Project Code:	133
Date TMDL Approved by USEPA:	10/07/2011
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be removed from the CWA section 303(d) List because this waterbody was originally listed based on data that were determined to be of poor quality. Therefore, this waterbody will be delisted, due to flaws in the original listing. There are no new data assessed.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be removed from the section 303(d) list because the original basis for listing was flawed.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 132018, Diazinon	Region 3
Espinosa Lake

LOE ID:

232871

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

n/a

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

n/a

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

n/a

Temporal Representation:

n/a

Environmental Conditions:

n/a

QAPP Information:

n/a

QAPP Information Reference(s):

Placeholder reference 2006 303(d)