Draft California 2024 Integrated Report (303(d) List/305(b) Report)

Supporting Information

Regional Board 4 - Los Angeles Region

Water Body Name:	Santa Catalina Island Nearshore
Water Body ID:	CAO4064000020210427059494
Water Body Type:	Ocean


DECISION ID	150465	Region 4
Santa Catalina Island Nearshore

Pollutant:	Ammonia
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:	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 150465, Ammonia	Region 4
Santa Catalina Island Nearshore

LOE ID:

257147

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed ASBS Regional Reference Site Monitoring data for Santa Catalina Island Nearshore to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Ammonia as N.

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 6-month median concentration of 600 ug/L for ammonia (as nitrogen) to protect aquatic life in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406GoatHarbor (Goat Harbor).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance

Line of Evidence (LOE) for Decision ID 150465, Ammonia	Region 4
Santa Catalina Island Nearshore

LOE ID:

257013

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 6-month median concentration of 600 ug/L for ammonia (as nitrogen) to protect aquatic life in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406ItalianGardens (Italian Gardens).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance


DECISION ID	140788	Region 4
Santa Catalina Island Nearshore

Pollutant:	Arsenic
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:	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 140788, Arsenic	Region 4
Santa Catalina Island Nearshore

LOE ID:

257507

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 6-month median concentration of 8 ug/L for total arsenic to protect aquatic life in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406ItalianGardens (Italian Gardens).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance

Line of Evidence (LOE) for Decision ID 140788, Arsenic	Region 4
Santa Catalina Island Nearshore

LOE ID:

257506

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 6-month median concentration of 8 ug/L for total arsenic to protect aquatic life in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406GoatHarbor (Goat Harbor).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance


DECISION ID	140789	Region 4
Santa Catalina Island Nearshore

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:	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:	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 140789, Copper	Region 4
Santa Catalina Island Nearshore

LOE ID:

258885

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 6-month median concentration of 3 ug/L for total copper to protect aquatic life in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406ItalianGardens (Italian Gardens).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance

Line of Evidence (LOE) for Decision ID 140789, Copper	Region 4
Santa Catalina Island Nearshore

LOE ID:

258892

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 6-month median concentration of 3 ug/L for total copper to protect aquatic life in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406GoatHarbor (Goat Harbor).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance


DECISION ID	140790	Region 4
Santa Catalina Island Nearshore

Pollutant:	Fluoranthene
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:	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 140790, Fluoranthene	Region 4
Santa Catalina Island Nearshore

LOE ID:

261611

Pollutant:

Fluoranthene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 30-day average concentration of 15 ug/L for fluoranthene to protect human health in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406GoatHarbor (Goat Harbor).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance

Line of Evidence (LOE) for Decision ID 140790, Fluoranthene	Region 4
Santa Catalina Island Nearshore

LOE ID:

261896

Pollutant:

Fluoranthene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 30-day average concentration of 15 ug/L for fluoranthene to protect human health in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406GoatHarbor (Goat Harbor).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance

Line of Evidence (LOE) for Decision ID 140790, Fluoranthene	Region 4
Santa Catalina Island Nearshore

LOE ID:

261897

Pollutant:

Fluoranthene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 30-day average concentration of 15 ug/L for fluoranthene to protect human health in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406ItalianGardens (Italian Gardens).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance

Line of Evidence (LOE) for Decision ID 140790, Fluoranthene	Region 4
Santa Catalina Island Nearshore

LOE ID:

261894

Pollutant:

Fluoranthene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 30-day average concentration of 15 ug/L for fluoranthene to protect human health in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406ItalianGardens (Italian Gardens).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance


DECISION ID	140791	Region 4
Santa Catalina Island Nearshore

Pollutant:	Lead
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:	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 140791, Lead	Region 4
Santa Catalina Island Nearshore

LOE ID:

262971

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 6-month median concentration of 2 ug/L for total lead to protect aquatic life in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406GoatHarbor (Goat Harbor).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance

Line of Evidence (LOE) for Decision ID 140791, Lead	Region 4
Santa Catalina Island Nearshore

LOE ID:

262909

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 6-month median concentration of 2 ug/L for total lead to protect aquatic life in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406ItalianGardens (Italian Gardens).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance


DECISION ID	149854	Region 4
Santa Catalina Island Nearshore

Pollutant:	Mercury
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:	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 149854, Mercury	Region 4
Santa Catalina Island Nearshore

LOE ID:

263300

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 6-month median concentration of 0.04 ug/L for total mercury to protect aquatic life in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406GoatHarbor (Goat Harbor).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance

Line of Evidence (LOE) for Decision ID 149854, Mercury	Region 4
Santa Catalina Island Nearshore

LOE ID:

263440

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 6-month median concentration of 0.04 ug/L for total mercury to protect aquatic life in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406ItalianGardens (Italian Gardens).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance


DECISION ID	140792	Region 4
Santa Catalina Island Nearshore

Pollutant:	Nickel
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:	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 140792, Nickel	Region 4
Santa Catalina Island Nearshore

LOE ID:

264013

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 6-month median concentration of 5 ug/L for total nickel to protect aquatic life in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406GoatHarbor (Goat Harbor).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance

Line of Evidence (LOE) for Decision ID 140792, Nickel	Region 4
Santa Catalina Island Nearshore

LOE ID:

264022

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 6-month median concentration of 5 ug/L for total nickel to protect aquatic life in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406ItalianGardens (Italian Gardens).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance


DECISION ID	149856	Region 4
Santa Catalina Island Nearshore

Pollutant:	PAHs (Polycyclic Aromatic Hydrocarbons)
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:	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 149856, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Santa Catalina Island Nearshore

LOE ID:

267972

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 30-day average concentration of 0.0088 ug/L for PAHs to protect human health in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406ItalianGardens (Italian Gardens).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance

Line of Evidence (LOE) for Decision ID 149856, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Santa Catalina Island Nearshore

LOE ID:

267935

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 30-day average concentration of 0.0088 ug/L for PAHs to protect human health in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406ItalianGardens (Italian Gardens).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance

Line of Evidence (LOE) for Decision ID 149856, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Santa Catalina Island Nearshore

LOE ID:

267953

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 30-day average concentration of 0.0088 ug/L for PAHs to protect human health in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406GoatHarbor (Goat Harbor).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance

Line of Evidence (LOE) for Decision ID 149856, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Santa Catalina Island Nearshore

LOE ID:

267936

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 30-day average concentration of 0.0088 ug/L for PAHs to protect human health in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406GoatHarbor (Goat Harbor).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance


DECISION ID	140793	Region 4
Santa Catalina Island Nearshore

Pollutant:	Selenium
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:	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 140793, Selenium	Region 4
Santa Catalina Island Nearshore

LOE ID:

266322

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 6-month median concentration of 15 ug/L for total selenium to protect aquatic life in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406ItalianGardens (Italian Gardens).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance

Line of Evidence (LOE) for Decision ID 140793, Selenium	Region 4
Santa Catalina Island Nearshore

LOE ID:

266259

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 6-month median concentration of 15 ug/L for total selenium to protect aquatic life in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406GoatHarbor (Goat Harbor).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance


DECISION ID	140794	Region 4
Santa Catalina Island Nearshore

Pollutant:	Silver
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:	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 140794, Silver	Region 4
Santa Catalina Island Nearshore

LOE ID:

266438

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved silver criterion maximum concentration (CMC) to protect aquatic life in saltwater is 1.9 ug/L. This criterion was divided by 2 in order to better represent a CMC value as specified in footnote g of Table (b)(1) of the California Toxics Rule, 2000.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406ItalianGardens (Italian Gardens).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance

Line of Evidence (LOE) for Decision ID 140794, Silver	Region 4
Santa Catalina Island Nearshore

LOE ID:

266674

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406GoatHarbor (Goat Harbor).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance


DECISION ID	140795	Region 4
Santa Catalina Island Nearshore

Pollutant:	Zinc
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:	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 140795, Zinc	Region 4
Santa Catalina Island Nearshore

LOE ID:

268309

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 6-month median concentration of 20 ug/L for total zinc to protect aquatic life in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406GoatHarbor (Goat Harbor).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance

Line of Evidence (LOE) for Decision ID 140795, Zinc	Region 4
Santa Catalina Island Nearshore

LOE ID:

268430

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan, Table 3 lists the 6-month median concentration of 20 ug/L for total zinc to protect aquatic life in marine waters.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 406ItalianGardens (Italian Gardens).

Temporal Representation:

The samples were collected between the dates of 2013-03-08 and 2014-02-28

Environmental Conditions:

QAPP Information:

Southern California Coastal Water Research Project. 2008. Assessing Natural Water Quality In Areas Of Special Biological Significance.

QAPP Information Reference(s):

Assessing Natural Water Quality In Areas Of Special Biological Significance