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

Supporting Information

Regional Board 5 - Central Valley Region

Water Body Name:	Wutchumna Ditch (Tulare County)
Water Body ID:	CAR5581000020200320050456
Water Body Type:	River & Stream


DECISION ID	121445	Region 5
Wutchumna Ditch (Tulare County)

Pollutant:	Aldicarb
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	This decision was made by SWRCB staff.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 121445, Aldicarb	Region 5
Wutchumna Ditch (Tulare County)

LOE ID:

197189

Pollutant:

Aldicarb

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Southern San Joaquin Water Quality Coalition data for Wutchumna Ditch (Tulare County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Aldicarb.

Data Reference:

Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The California Maximum Contaminant Level for aldicarb incorporated by reference in the Water Quality Control Plan for the Tulare Basin is 3 ug/L

Objective/Criterion Reference:

Water Quality Control Plan for the Tulare Lake Basin Third Edition. Revised May 2018 (with approved amendments)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (558WTCMWS)

Temporal Representation:

The samples were collected between the dates of 2011-03-17 and 2011-08-24

Environmental Conditions:

QAPP Information:

Irrigated Lands Regulatory Program. 2011. Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011 .

QAPP Information Reference(s):

Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011


DECISION ID	121437	Region 5
Wutchumna Ditch (Tulare County)

Pollutant:	Atrazine
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	This decision was made by SWRCB staff.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 121437, Atrazine	Region 5
Wutchumna Ditch (Tulare County)

LOE ID:

197284

Pollutant:

Atrazine

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The California Primary Maximum Contaminant Level for atrazine incorporated by reference in the Water Quality Control Plan for the Tulare Basin is 0.001 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan for the Tulare Lake Basin Third Edition. Revised May 2018 (with approved amendments)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (558WTCMWS)

Temporal Representation:

The samples were collected between the dates of 2011-03-17 and 2011-08-24

Environmental Conditions:

QAPP Information:

Irrigated Lands Regulatory Program. 2011. Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011 .

QAPP Information Reference(s):

Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011


DECISION ID	121438	Region 5
Wutchumna Ditch (Tulare County)

Pollutant:	Carbofuran
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	This decision was made by SWRCB staff.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 121438, Carbofuran	Region 5
Wutchumna Ditch (Tulare County)

LOE ID:

197370

Pollutant:

Carbofuran

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The California Primary Maximum Contaminant Level for Carbofuran incorporated by reference in the Water Quality Control Plan for the Tulare Basin is 0.018 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan for the Tulare Lake Basin Third Edition. Revised May 2018 (with approved amendments)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (558WTCMWS)

Temporal Representation:

The samples were collected between the dates of 2011-03-17 and 2011-08-24

Environmental Conditions:

QAPP Information:

Irrigated Lands Regulatory Program. 2011. Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011 .

QAPP Information Reference(s):

Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011


DECISION ID	121439	Region 5
Wutchumna Ditch (Tulare County)

Pollutant:	Copper
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollution

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 121439, Copper	Region 5
Wutchumna Ditch (Tulare County)

LOE ID:

197334

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Southern San Joaquin Water Quality Coalition data for Wutchumna Ditch (Tulare County) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Copper.

Data Reference:

Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The California Secondary Maximum Contaminant Level for copper incorporated by reference in the Water Quality Control Plan for the Tulare Basin is 1.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan for the Tulare Lake Basin Third Edition. Revised May 2018 (with approved amendments)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (558WTCMWS)

Temporal Representation:

The samples were collected between the dates of 2011-03-17 and 2011-08-24

Environmental Conditions:

QAPP Information:

Irrigated Lands Regulatory Program. 2011. Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011 .

QAPP Information Reference(s):

Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011

Line of Evidence (LOE) for Decision ID 121439, Copper	Region 5
Wutchumna Ditch (Tulare County)

LOE ID:

197348

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Southern San Joaquin Water Quality Coalition data for Wutchumna Ditch (Tulare County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Copper.

Data Reference:

Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The California Secondary Maximum Contaminant Level for copper incorporated by reference in the Water Quality Control Plan for the Tulare Basin is 1.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan for the Tulare Lake Basin Third Edition. Revised May 2018 (with approved amendments)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (558WTCMWS)

Temporal Representation:

The samples were collected between the dates of 2011-03-17 and 2011-03-17

Environmental Conditions:

QAPP Information:

Irrigated Lands Regulatory Program. 2011. Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011 .

QAPP Information Reference(s):

Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011


DECISION ID	121440	Region 5
Wutchumna Ditch (Tulare County)

Pollutant:	Glyphosate
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 121440, Glyphosate	Region 5
Wutchumna Ditch (Tulare County)

LOE ID:

197627

Pollutant:

Glyphosate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The California Primary Maximum Contaminant Level for Glyphosate incorporated by reference in the Water Quality Control Plan for the Tulare Basin is 0.7 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan for the Tulare Lake Basin Third Edition. Revised May 2018 (with approved amendments)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (558WTCMWS)

Temporal Representation:

The samples were collected between the dates of 2011-03-17 and 2011-08-24

Environmental Conditions:

QAPP Information:

Irrigated Lands Regulatory Program. 2011. Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011 .

QAPP Information Reference(s):

Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011


DECISION ID	121441	Region 5
Wutchumna Ditch (Tulare County)

Pollutant:	Nitrate/Nitrite (Nitrite + Nitrate as N)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	This decision was made by SWRCB staff.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 121441, Nitrate/Nitrite (Nitrite + Nitrate as N)	Region 5
Wutchumna Ditch (Tulare County)

LOE ID:

197972

Pollutant:

Nitrate/Nitrite (Nitrite + Nitrate as N)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Southern San Joaquin Water Quality Coalition data for Wutchumna Ditch (Tulare County) to determine beneficial use support and results are as follows: 1 of 3 samples exceeded the water quality threshold for Nitrate + Nitrite as N.

Data Reference:

Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The California Maximum Contaminant Level for nitrate + nitrite (as N) incorporated by reference in the Water Quality Control Plan for the Tulare Basin is 10 mg/L (California Code of Regulations, Title 22).

Objective/Criterion Reference:

Water Quality Control Plan for the Tulare Lake Basin Third Edition. Revised May 2018 (with approved amendments)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (558WTCMWS)

Temporal Representation:

The samples were collected between the dates of 2011-03-17 and 2011-08-24

Environmental Conditions:

QAPP Information:

Irrigated Lands Regulatory Program. 2011. Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011 .

QAPP Information Reference(s):

Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011


DECISION ID	121442	Region 5
Wutchumna Ditch (Tulare County)

Pollutant:	Oxamyl (Vydate)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	This decision was made by SWRCB staff.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 121442, Oxamyl (Vydate)	Region 5
Wutchumna Ditch (Tulare County)

LOE ID:

197908

Pollutant:

Oxamyl (Vydate)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The California Primary Maximum Contaminant Level for Oxamyl incorporated by reference in the Water Quality Control Plan for the Tulare Basin is 0.05 mg/L

Objective/Criterion Reference:

Water Quality Control Plan for the Tulare Lake Basin Third Edition. Revised May 2018 (with approved amendments)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (558WTCMWS)

Temporal Representation:

The samples were collected between the dates of 2011-03-17 and 2011-08-24

Environmental Conditions:

QAPP Information:

Irrigated Lands Regulatory Program. 2011. Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011 .

QAPP Information Reference(s):

Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011


DECISION ID	121443	Region 5
Wutchumna Ditch (Tulare County)

Pollutant:	Simazine
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the Clean Water Act (CWA) section 303(d) List under section 3.1 of the Listing Policy. A total of one line of evidence is available in the administrative record to assess this pollutant. A total of zero of three samples exceed the water quality objective for the municipal and domestic supply beneficial use. These data are insufficient to determine the applicable beneficial use support rating with the power and confidence required by the Listing Policy. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. A total of zero of three samples exceed the water quality objective for the municipal and domestic supply beneficial use. This does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 121443, Simazine	Region 5
Wutchumna Ditch (Tulare County)

LOE ID:

197960

Pollutant:

Simazine

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The California Primary Maximum Contaminant Level for Simazine incorporated by reference in the Water Quality Control Plan for the Tulare Basin is 0.004 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan for the Tulare Lake Basin Third Edition. Revised May 2018 (with approved amendments)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (558WTCMWS)

Temporal Representation:

The samples were collected between the dates of 2011-03-17 and 2011-08-24

Environmental Conditions:

QAPP Information:

Irrigated Lands Regulatory Program. 2011. Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011 .

QAPP Information Reference(s):

Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011


DECISION ID	127424	Region 5
Wutchumna Ditch (Tulare County)

Pollutant:	Specific Conductivity
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 127424, Specific Conductivity	Region 5
Wutchumna Ditch (Tulare County)

LOE ID:

214410

Pollutant:

Specific Conductivity

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The California Secondary MCL that is incorporated by reference in the Water Quality Control Plan, Central Valley Region Tulare Basin for specific conductance is 900 uS/cm.

Objective/Criterion Reference:

Water Quality Control Plan for the Tulare Lake Basin Third Edition. Revised May 2018 (with approved amendments)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (558WTCMWS)

Temporal Representation:

The samples were collected between the dates of 2011-03-17 and 2011-08-24

Environmental Conditions:

QAPP Information:

Irrigated Lands Regulatory Program. 2011. Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011 .

QAPP Information Reference(s):

Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011


DECISION ID	121444	Region 5
Wutchumna Ditch (Tulare County)

Pollutant:	Total Dissolved Solids
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	This decision was made by SWRCB staff.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 121444, Total Dissolved Solids	Region 5
Wutchumna Ditch (Tulare County)

LOE ID:

198156

Pollutant:

Total Dissolved Solids

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The California Secondary Maximum Contaminant Level for total dissolved solids incorporated by reference in the Water Quality Control Plan for the Tulare Basin is 500 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan for the Tulare Lake Basin Third Edition. Revised May 2018 (with approved amendments)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (558WTCMWS)

Temporal Representation:

The samples were collected between the dates of 2011-03-17 and 2011-08-24

Environmental Conditions:

QAPP Information:

Irrigated Lands Regulatory Program. 2011. Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011 .

QAPP Information Reference(s):

Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011


DECISION ID	125161	Region 5
Wutchumna Ditch (Tulare County)

Pollutant:	pH
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	This decision was made by SWRCB staff.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 125161, pH	Region 5
Wutchumna Ditch (Tulare County)

LOE ID:

214559

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Central Valley Region Tulare Basin: pH should not be lower than 6.5 or higher than 8.5.

Objective/Criterion Reference:

Water Quality Control Plan for the Tulare Lake Basin Third Edition. Revised May 2018 (with approved amendments)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (558WTCMWS)

Temporal Representation:

The samples were collected between the dates of 2011-03-17 and 2011-08-24

Environmental Conditions:

QAPP Information:

Irrigated Lands Regulatory Program. 2011. Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011 .

QAPP Information Reference(s):

Southern San Joaquin Valley Water Quality Coalition Quality Assurance Project Plan December 2011