Final California 2010 Integrated Report( 303(d) List/305(b) Report)

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2005) states that the geometric mean for Enterococcus shall not exceed 35 MPN/100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Cowell Beach (Santa Cruz County) was collected at one AB411 monitoring site (Cowell's Beach @ the Stairs)

Temporal Representation:

Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 10718, Enterococcus	Region 3
Pacific Ocean at Cowell Beach (Santa Cruz County)

LOE ID:

19502

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

128

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Cowell Beach (Santa Cruz County) to determine beneficial use support and results are as follows: 1 of 128 samples exceed the criterion for Enterococci.

Data Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2005) states that the single sample maximum for Enterococcus shall not exceed 104 MPN/100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Cowell Beach (Santa Cruz County) was collected at one AB411 monitoring site (Cowell Beach West of the Wharf)

Temporal Representation:

Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 10718, Enterococcus	Region 3
Pacific Ocean at Cowell Beach (Santa Cruz County)

LOE ID:

19501

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2005) states that the geometric mean for Enterococcus shall not exceed 35 MPN/100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Cowell Beach (Santa Cruz County) was collected at one AB411 monitoring site (Cowell Beach West of the Wharf)

Temporal Representation:

Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 10718, Enterococcus	Region 3
Pacific Ocean at Cowell Beach (Santa Cruz County)

LOE ID:

19527

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

111

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Cowell Beach (Santa Cruz County) to determine beneficial use support and results are as follows: 2 of 111 samples exceed the criterion for Enterococci.

Data Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2005) states that the single sample maximum for Enterococcus shall not exceed 104 MPN/100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Cowell Beach (Santa Cruz County) was collected at one AB411 monitoring site (Cowell's Beach @ the Stairs)

Temporal Representation:

Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):


DECISION ID	10944	Region 3
Pacific Ocean at Cowell Beach (Santa Cruz County)

Pollutant:	Escherichia coli (E. coli)
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

Conclusion:	This water segment-pollutant combination is being considered for placement on the section 303(d) list under section 3.3 of the Listing Policy. Under section 3.3 a single line of evidence is necessary to assess listing status. Four lines of evidence are available in the administrative record to assess this water segment-pollutant combination. Data was collected from two different locations on the Cowell beach. Lines of evidence 19503 and 19504 summarize data from west of the wharf and LOEs 19528 and 19529 summarize data from the bottom of the stairs. Water Board staff assessed the data for each site against two different evaluation criteria (i.e. single sample maximum and geomean). At the site located west of the wharf, 0 of 7 samples exceeded the single sample maximum criterion and 1 of 2 geomean assessments exceeded the geomean criterion. At the monitoring site located at the base of the stairs, 0 of 7 samples exceeded the single sample maximum criterion and 0 of 2 geomean assessments exceeded the geomean criterion. 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 section 303(d) list in the Water Quality Limited Segments category. 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. None of the sample exceedance rates exceed the allowable frequency listed in Table 3.2 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.

RWQCB Board Staff Decision:	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 because applicable water quality standards are not being exceeded.

SWRCB Board Staff Decision:	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 applicable water quality standards for the pollutant are not exceeded.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 10944, Escherichia coli (E. coli)	Region 3
Pacific Ocean at Cowell Beach (Santa Cruz County)

LOE ID:

19503

Pollutant:

Escherichia coli (E. coli)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Cowell Beach (Santa Cruz County) to determine beneficial use support and results are as follows: 1 of 2 samples exceed the criterion for Escherichia coli.

Data Reference:

Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002

Water Quality Objective/Criterion:

USEPA Ambient Water Quality Criteria for Bacteria -1986.

Objective/Criterion Reference:

Evaluation Guideline:

Steady State Geometric Mean Indicator Density is 126 MPN/100mL (as stated in Table 4, Page 15).

Guideline Reference:

Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Cowell Beach (Santa Cruz County) was collected at one AB411 monitoring site (Cowell Beach West of the Wharf)

Temporal Representation:

Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 10944, Escherichia coli (E. coli)	Region 3
Pacific Ocean at Cowell Beach (Santa Cruz County)

LOE ID:

19504

Pollutant:

Escherichia coli (E. coli)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Cowell Beach (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 7 samples exceed the criterion for Escherichia coli.

Data Reference:

Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002

Water Quality Objective/Criterion:

USEPA Ambient Water Quality Criteria for Bacteria -1986.

Objective/Criterion Reference:

Evaluation Guideline:

Single sample maximum allowable density for E. coli in freshwater is 235 MPN/100mL (as stated in Table 4, page 15)

Guideline Reference:

Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Cowell Beach (Santa Cruz County) was collected at one AB411 monitoring site (Cowell Beach West of the Wharf)

Temporal Representation:

Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 10944, Escherichia coli (E. coli)	Region 3
Pacific Ocean at Cowell Beach (Santa Cruz County)

LOE ID:

19528

Pollutant:

Escherichia coli (E. coli)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Cowell Beach (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Escherichia coli.

Data Reference:

Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002

Water Quality Objective/Criterion:

USEPA Ambient Water Quality Criteria for Bacteria -1986.

Objective/Criterion Reference:

Evaluation Guideline:

Steady State Geometric Mean Indicator Density is 126 MPN/100mL (as stated in Table 4, Page 15).

Guideline Reference:

Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Cowell Beach (Santa Cruz County) was collected at one AB411 monitoring site (Cowell's Beach @ the Stairs)

Temporal Representation:

Two samples were collected at this site on the following dates: 3/8/2004 and 12/26/2006. These data were submitted as part of the AB411 project.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 10944, Escherichia coli (E. coli)	Region 3
Pacific Ocean at Cowell Beach (Santa Cruz County)

LOE ID:

19529

Pollutant:

Escherichia coli (E. coli)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Data Reference:

Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002

Water Quality Objective/Criterion:

USEPA Ambient Water Quality Criteria for Bacteria -1986.

Objective/Criterion Reference:

Evaluation Guideline:

Single sample maximum allowable density for E. coli in freshwater is 235 MPN/100mL (as stated in Table 4, page 15)

Guideline Reference:

Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Cowell Beach (Santa Cruz County) was collected at one AB411 monitoring site (Cowell's Beach @ the Stairs)

Temporal Representation:

Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):


DECISION ID	10950	Region 3
Pacific Ocean at Cowell Beach (Santa Cruz County)

Pollutant:	Fecal Coliform
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

Conclusion:	This water segment-pollutant combination is being considered for placement on the section 303(d) list under section 3.3 of the Listing Policy. Under section 3.3 a single line of evidence is necessary to assess listing status. Four lines of evidence are available in the administrative record to assess this water segment-pollutant combination. Data were collected from two different locations on Cowell beach. Lines of evidence #19480 and #19500 summarize data from the site west of the wharf and LOEs #19505 and #19506 summarize data from the site at the stairs. Water Board staff assessed the data for each site against two different evaluation criteria (i.e. single sample maximum and geomean). At the site located west of the wharf, 10 of 111 samples exceeded the single sample maximum criterion and 3 of 22 geomean assessments exceeded the geomean criterion. At the monitoring site located at the base of the stairs, 1 of 90 samples exceeded the single sample maximum criterion and 0 of 21 geomean assessments exceeded the geomean criterion. 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 section 303(d) list in the Water Quality Limited Segments category. 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. At the site located west of the wharf, 10 of 111 samples exceeded the single sample maximum criterion and 3 of 22 geomean assessments exceeded the geomean criterion. At the monitoring site located at the base of the stairs, 1 of 90 samples exceeded the single sample maximum criterion and 0 of 21 geomean assessments exceeded the geomean criterion. Neither of these exceed the allowable frequency listed in Table 3.2 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.

RWQCB Board Staff Decision:	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 because applicable water quality standards are not being exceeded.

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

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 10950, Fecal Coliform	Region 3
Pacific Ocean at Cowell Beach (Santa Cruz County)

LOE ID:

19506

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Cowell Beach (Santa Cruz County) to determine beneficial use support and results are as follows: 1 of 90 samples exceed the criterion for Coliform, Fecal.

Data Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2005) states that the single sample maximum for fecal coliform shall not exceed 400 MPN/100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Cowell Beach (Santa Cruz County) was collected at one AB411 monitoring site (Cowell's Beach @ the Stairs)

Temporal Representation:

Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 10950, Fecal Coliform	Region 3
Pacific Ocean at Cowell Beach (Santa Cruz County)

LOE ID:

19505

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Cowell Beach (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 21 samples exceed the criterion for Coliform, Fecal.

Data Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2005) states that the 30-day geometric mean for fecal coliform shall not exceed 200 MPN/100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Cowell Beach (Santa Cruz County) was collected at one AB411 monitoring site (Cowell's Beach @ the Stairs)

Temporal Representation:

Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 10950, Fecal Coliform	Region 3
Pacific Ocean at Cowell Beach (Santa Cruz County)

LOE ID:

19500

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

111

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Cowell Beach (Santa Cruz County) to determine beneficial use support and results are as follows: 10 of 111 samples exceed the criterion for Coliform, Fecal.

Data Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2005) states that the single sample maximum for fecal coliform shall not exceed 400 MPN/100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Cowell Beach (Santa Cruz County) was collected at one AB411 monitoring site (Cowell Beach West of the Wharf)

Temporal Representation:

Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 10950, Fecal Coliform	Region 3
Pacific Ocean at Cowell Beach (Santa Cruz County)

LOE ID:

19480

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Cowell Beach (Santa Cruz County) to determine beneficial use support and results are as follows: 3 of 22 samples exceed the criterion for Coliform, Fecal.

Data Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2005) states that the 30-day geometric mean for fecal coliform shall not exceed 200 MPN/100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Cowell Beach (Santa Cruz County) was collected at one AB411 monitoring site (Cowell Beach West of the Wharf)

Temporal Representation:

Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):


DECISION ID	10951	Region 3
Pacific Ocean at Cowell Beach (Santa Cruz County)

Pollutant:	Total Coliform
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

Conclusion:	This water segment-pollutant combination is being considered for placement on the section 303(d) list under section 3.3 of the Listing Policy. Under section 3.3 a single line of evidence is necessary to assess listing status. Six lines of evidence are available in the administrative record to assess this water segment-pollutant combination. Data was collected from two different locations on Cowell beach. Lines of evidence #19530, ##19531 and #19532 summarize data collected at the site west of the wharf and LOEs #19533, #19534 and #19554 summarize data collected at the site at the stairs. Water Board staff assessed one data set against three different evaluation criteria (i.e. single sample maximum, geomean, and total to fecal ratio). At the site located west of the wharf, 0 of 133 samples exceeded the single sample maximum criterion, 0 of 26 geomean assessments exceeded the geomean criterion, and 1 of 110 sample ratios exceeded the total to fecal ratio criterion. At the monitoring site located at the base of the stairs, 0 of 113 samples exceeded the single sample maximum criterion, 0 of 26 geomean assessments exceeded the geomean criterion, and 0 of 90 sample ratios exceeded the total to fecal ratio criterion. 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 section 303(d) list in the Water Quality Limited Segments category. 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. At the site located west of the wharf, 0 of 133 samples exceeded the single sample maximum criterion, 0 of 26 geomean assessments exceeded the geomean criterion, and 1 of 110 sample ratios exceeded the total to fecal ratio criterion. At the monitoring site located at the base of the stairs, 0 of 113 samples exceeded the single sample maximum criterion, 0 of 26 geomean assessments exceeded the geomean criterion, and 0 of 90 sample ratios exceeded the total to fecal ratio criterion. None of these exceed the allowable frequency listed in Table 3.2 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.

RWQCB Board Staff Decision:	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 because applicable water quality standards are not being exceeded.

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

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 10951, Total Coliform	Region 3
Pacific Ocean at Cowell Beach (Santa Cruz County)

LOE ID:

19531

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Water Quality Objective/Criterion:

California Ocean Plan (2005) 30-day geometric mean standard for total coliform states that total coliform density shall not exceed 1,000 MPN/100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Cowell Beach (Santa Cruz County) was collected at one monitoring site (Cowell Beach West of the Wharf)

Temporal Representation:

Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 10951, Total Coliform	Region 3
Pacific Ocean at Cowell Beach (Santa Cruz County)

LOE ID:

19530

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

133

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Cowell Beach (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 133 samples exceed the criterion for Coliform, Total.

Data Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Water Quality Objective/Criterion:

California Ocean Plan (2005) single sample maximum states that total coliform density shall not exceed 10,000 MPN/100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Cowell Beach (Santa Cruz County) was collected at one monitoring site (Cowell Beach West of the Wharf)

Temporal Representation:

Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 10951, Total Coliform	Region 3
Pacific Ocean at Cowell Beach (Santa Cruz County)

LOE ID:

19554

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Cowell Beach (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 90 samples exceed the criterion for Coliform, Total.

Data Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Water Quality Objective/Criterion:

California Ocean Plan (2005) single sample maximum standard for total coliform states that total coliform density shall not exceed 1,000 MPN/100 mL when the fecal coliform/total coliform ratio exceeds 0.1.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Cowell Beach (Santa Cruz County) was collected at one monitoring site (Cowell's Beach @ the Stairs)

Temporal Representation:

Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 10951, Total Coliform	Region 3
Pacific Ocean at Cowell Beach (Santa Cruz County)

LOE ID:

19533

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

113

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Cowell Beach (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 113 samples exceed the criterion for Coliform, Total.

Data Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Water Quality Objective/Criterion:

California Ocean Plan (2005) single sample maximum states that total coliform density shall not exceed 10,000 MPN/100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Cowell Beach (Santa Cruz County) was collected at one monitoring site (Cowell's Beach @ the Stairs)

Temporal Representation:

Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 10951, Total Coliform	Region 3
Pacific Ocean at Cowell Beach (Santa Cruz County)

LOE ID:

19534

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Water Quality Objective/Criterion:

California Ocean Plan (2005) 30-day geometric mean standard for total coliform states that total coliform density shall not exceed 1,000 MPN/100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Cowell Beach (Santa Cruz County) was collected at one monitoring site (Cowell's Beach @ the Stairs)

Temporal Representation:

Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 10951, Total Coliform	Region 3
Pacific Ocean at Cowell Beach (Santa Cruz County)

LOE ID:

19532

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

110

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Cowell Beach (Santa Cruz County) to determine beneficial use support and results are as follows: 1 of 110 samples exceed the criterion for Coliform, Total.

Data Reference: