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

Supporting Information

Regional Board 9 - San Diego Region

Water Body Name:	Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach
Water Body ID:	CAC9011400020091116103327
Water Body Type:	Coastal & Bay Shoreline


DECISION ID	127931	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

Pollutant:	Indicator Bacteria
Final Listing Decision:	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision:	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)(2018)
Revision Status	Revised
Sources:	A Source Unknown
Reason for Delisting:	Applicable WQS attained; due to change in WQS
TMDL Name:	Bacteria TMDL for San Diego Bay and Dana Point Harbor Shorelines
TMDL Project Code:	659
Date TMDL Approved by USEPA:	10/26/2009
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under sections 3.2 and 3.3 of the Listing Policy. Under these sections a single line of evidence is necessary to assess listing status. Four lines of evidence are available in the administrative record to assess this pollutant for REC-1. One hundred four of 655 samples exceed the GM threshold for Enterococci. Zero of 323 samples exceed the GM threshold for Fecal Coliform. Four lines of evidence are available in the administrative record to assess this pollutant for SHELL. Three hundred and ninety-nine out of 796 samples exceed the SHELL threshold for Total Coliform. 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 for impairment of REC-1. However, there is sufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List for impairment of SHELL. 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. One hundred four of 655 samples exceeded the Enterococci water quality threshold and zero of 323 samples exceeded the Fecal Coliform water quality threshold for the protection of REC-1, and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. Three hundred and ninety-nine out of 796 exceed the SHELL threshold for Total Coliform and this does 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. While there is justification for placing this water segment-pollutant combination on the CWA section 303(d) List for impairment of SHELL, the San Diego Water Board considers this waterbody-pollutant combination lowest priority for TMDL development as the water quality objective for SHELL has been determined by the State Water Board to require updating. On December 3, 2019, the State Water Board adopted the 2019 Triennial Review of the Ocean Plan and identified as a high priority a project to consider amending the Ocean Plan to review and revise the existing shellfish harvesting total coliform objective. The State Water Board recognized that the current total coliform water quality objective may be unattainable, as exceedances of the standard were found to be common in reference-quality areas. Following the update of the water quality objective, this waterbody will be reassessed and reprioritized for TMDL development, if needed. The Water Quality Control Plan for Ocean Waters (“Ocean Plan”) contains two bacteria water quality objectives applicable to the REC-1 beneficial use: a fecal coliform water quality objective and an enterococci water quality objective. This waterbody is being considered for placement on or removal from the CWA section 303(d) List under section 3.3 or 4.3 of the Listing Policy, as applicable, using the fecal coliform and enterococci objectives. In accordance with section 6.1.5.3 of the Listing Policy, data should be representative of the critical timing that the pollutant is expected to impact the waterbody. Indicator bacteria (total coliform, fecal coliform, E. coli, enterococci) populations may fluctuate substantially on a daily, seasonal, or yearly basis. Lacking constant inputs, they do not persist in the environment for a long period and effects are of relatively short duration. As a result, the historic levels of indicator bacteria in the waterbody may be a poor indicator of current risks to human health, particularly when more recent data are available to sufficiently assess the water quality standard. Additionally, water quality conditions in waterbodies may change as a result of management actions that have been implemented to address bacteria. Unrepresentative data may result in incorrectly placing or not placing a water body segment on the list, which could result in the unnecessary expenditure of public resources or missing a human health problem. Historic lines of evidence for data collected prior to 2010 were evaluated pursuant to these considerations and were not used to assess water quality standards attainment because they do not meet the temporal representation requirements of section 6.1.5.3 of the Listing Policy. For enterococci data, Listing Policy sections 3.3 and 4.3 instructs to use the binomial distribution table in sections 3.2 and 4.2, as applicable. To use the binomial table that uses a four percent exceedance frequency, the data must be collected from coastal beaches from April 1 through October 31 only.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:	The Water Quality Control Plan for Ocean Waters (“Ocean Plan”) contains two bacteria water quality objectives applicable to the REC-1 beneficial use: a fecal coliform water quality objective and an enterococci water quality objective. This waterbody is being considered for placement on or removal from the CWA section 303(d) List under section 3.3 or 4.3 of the Listing Policy, as applicable, using the fecal coliform and enterococci objectives. In accordance with section 6.1.5.3 of the Listing Policy, data should be representative of the critical timing that the pollutant is expected to impact the waterbody. Indicator bacteria (total coliform, fecal coliform, E. coli, enterococci) populations may fluctuate substantially on a daily, seasonal, or yearly basis. Lacking constant inputs, they do not persist in the environment for a long period and effects are of relatively short duration. As a result, the historic levels of indicator bacteria in the waterbody may be a poor indicator of current risks to human health, particularly when more recent data are available to sufficiently assess the water quality standard. Additionally, water quality conditions in waterbodies may change as a result of management actions that have been implemented to address bacteria. Unrepresentative data may result in incorrectly placing or not placing a water body segment on the list, which could result in the unnecessary expenditure of public resources or missing a human health problem. Historic lines of evidence for data collected prior to 2010 were evaluated pursuant to these considerations and were not used to assess water quality standards attainment because they do not meet the temporal representation requirements of section 6.1.5.3 of the Listing Policy. For enterococci data, Listing Policy sections 3.3 and 4.3 instructs to use the binomial distribution table in sections 3.2 and 4.2, as applicable. To use the binomial table that uses a four percent exceedance frequency, the data must be collected from coastal beaches from April 1 through October 31 only.

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

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

220036

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

328

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach to determine beneficial use support and the results are as follows: 46 of the 328 samples exceeded the geomean water quality threshold for Enterococcus. This is a six week rolling geomean that is calculated weekly.

Data Reference:

Coastal Counties in Region 9 including: Orange, San Diego, and Los Angeles counties.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2019) states that the bacteria water quality objective to protect the REC-1 beneficial for all ocean waters for Enterococci is a geometric mean (GM) of 30 cfu/100 mL. The waterbody GM shall not be greater that the GM magnitude in any six-week interval, calculated weekly.

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(s), station(s): BDP15

Temporal Representation:

The samples were collected between the days of 2010-08-31 and 2019-06-10 .

Environmental Conditions:

QAPP Information:

QAPP for the Orange County Beachwatch data

QAPP Information Reference(s):

QAPP for the Orange County Beachwatch data for the 2020 Integrated Report.

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

219938

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

327

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach to determine beneficial use support and the results are as follows: 58 of the 327 samples exceeded the geomean water quality threshold for Enterococcus. This is a six week rolling geomean that is calculated weekly.

Data Reference:

Coastal Counties in Region 9 including: Orange, San Diego, and Los Angeles counties.

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(s), station(s): BDP12

Temporal Representation:

The samples were collected between the days of 2010-08-31 and 2019-06-12 .

Environmental Conditions:

QAPP Information:

QAPP for the Orange County Beachwatch data

QAPP Information Reference(s):

QAPP for the Orange County Beachwatch data for the 2020 Integrated Report.

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

220015

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:

Water Board staff assessed data for Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach to determine beneficial use support and the results are as follows: 26 of the 91 samples exceeded the Statistical Threshold Value (STV) water quality threshold for Enterococcus. The STV is based on a 10% exceedance rate that is calculated monthly.

Data Reference:

Coastal Counties in Region 9 including: Orange, San Diego, and Los Angeles counties.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2019) states that the bacteria water quality objective to protect the REC-1 beneficial for all ocean waters for Enterococci is a statistical value threshold (STV) of 110 cfu/100 mL. The STV shall not be exceeded by more than 10 percent of the samples collected in a calendar month, calculated in a static manner.

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(s), station(s): BDP12

Temporal Representation:

The samples were collected between the days of 2010-08-31 and 2019-06-12 .

Environmental Conditions:

QAPP Information:

QAPP for the Orange County Beachwatch data

QAPP Information Reference(s):

QAPP for the Orange County Beachwatch data for the 2020 Integrated Report.

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

219890

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

175

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach to determine beneficial use support and the results are as follows: 0 of the 175 samples exceeded the water quality threshold for Coliform, Fecal. The water quality threshold is based on a 30-Day rolling geomean.

Data Reference:

Coastal Counties in Region 9 including: Orange, San Diego, and Los Angeles counties.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2019) states that the 30 day geometric mean of fecal coliform density not exceed 200 per 100 mL, calculated based on the five most recent samples from each site.

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(s), station(s): BDP12

Temporal Representation:

The samples were collected between the days of 2010-08-31 and 2019-06-12 .

Environmental Conditions:

QAPP Information:

QAPP for the Orange County Beachwatch data

QAPP Information Reference(s):

QAPP for the Orange County Beachwatch data for the 2020 Integrated Report.

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

219762

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

402

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach to determine beneficial use support and the results are as follows: 7 of the 402 samples exceeded the water quality threshold for Coliform, Fecal. The water quality threshold is based on a Single Sample Maximum (SSM) value that is calculated daily.

Data Reference:

Coastal Counties in Region 9 including: Orange, San Diego, and Los Angeles counties.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2019) states that the Single Sample Maximum fecal coliform density not exceed 400 per 100 mL.

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(s), station(s): BDP12

Temporal Representation:

The samples were collected between the days of 2010-08-31 and 2019-06-12 .

Environmental Conditions:

QAPP Information:

QAPP for the Orange County Beachwatch data

QAPP Information Reference(s):

QAPP for the Orange County Beachwatch data for the 2020 Integrated Report.

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

220016

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

148

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach to determine beneficial use support and the results are as follows: 0 of the 148 samples exceeded the water quality threshold for Coliform, Fecal. The water quality threshold is based on a 30-Day rolling geomean.

Data Reference:

Coastal Counties in Region 9 including: Orange, San Diego, and Los Angeles counties.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2019) states that the 30 day geometric mean of fecal coliform density not exceed 200 per 100 mL, calculated based on the five most recent samples from each site.

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(s), station(s): BDP15

Temporal Representation:

The samples were collected between the days of 2010-08-31 and 2019-06-10 .

Environmental Conditions:

QAPP Information:

QAPP for the Orange County Beachwatch data

QAPP Information Reference(s):

QAPP for the Orange County Beachwatch data for the 2020 Integrated Report.

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

219922

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

394

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach to determine beneficial use support and the results are as follows: 11 of the 394 samples exceeded the water quality threshold for Coliform, Fecal. The water quality threshold is based on a Single Sample Maximum (SSM) value that is calculated daily.

Data Reference:

Coastal Counties in Region 9 including: Orange, San Diego, and Los Angeles counties.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2019) states that the Single Sample Maximum fecal coliform density not exceed 400 per 100 mL.

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(s), station(s): BDP15

Temporal Representation:

The samples were collected between the days of 2010-08-31 and 2019-06-10 .

Environmental Conditions:

QAPP Information:

QAPP for the Orange County Beachwatch data

QAPP Information Reference(s):

QAPP for the Orange County Beachwatch data for the 2020 Integrated Report.

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

219808

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Shellfish Harvesting

Number of Samples:

394

Number of Exceedances:

124

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach to determine beneficial use support and the results are as follows: 124 of the 394 samples exceeded the water quality threshold for Coliform, Total. The water quality threshold for shellfish is based on the median concentration of Total Coliform at each station, and is calculated as a 30-day rolling median.

Data Reference:

Coastal Counties in Region 9 including: Orange, San Diego, and Los Angeles counties.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2019) states that the median total coliform density shall not exceed 70 per 100 mL.

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(s), station(s): BDP15

Temporal Representation:

The samples were collected between the days of 2010-08-31 and 2019-06-10 .

Environmental Conditions:

QAPP Information:

QAPP for the Orange County Beachwatch data

QAPP Information Reference(s):

QAPP for the Orange County Beachwatch data for the 2020 Integrated Report.

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

219898

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Shellfish Harvesting

Number of Samples:

402

Number of Exceedances:

201

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach to determine beneficial use support and the results are as follows: 201 of the 402 samples exceeded the water quality threshold for Coliform, Total. The water quality threshold for shellfish is based on the median concentration of Total Coliform at each station, and is calculated as a 30-day rolling median.

Data Reference:

Coastal Counties in Region 9 including: Orange, San Diego, and Los Angeles counties.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2019) states that the median total coliform density shall not exceed 70 per 100 mL.

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(s), station(s): BDP12

Temporal Representation:

The samples were collected between the days of 2010-08-31 and 2019-06-12 .

Environmental Conditions:

QAPP Information:

QAPP for the Orange County Beachwatch data

QAPP Information Reference(s):

QAPP for the Orange County Beachwatch data for the 2020 Integrated Report.

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

220003

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Shellfish Harvesting

Number of Samples:

402

Number of Exceedances:

235

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach to determine beneficial use support and the results are as follows: 235 of the 402 samples exceeded the water quality threshold for Coliform, Total. The water quality threshold is based on a 10% exceedance rate that is calculated for a 30-Day peroid.

Data Reference:

Coastal Counties in Region 9 including: Orange, San Diego, and Los Angeles counties.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2019) states that not more than 10 percent of the total coliform samples shall exceed 230 per 100 mL.

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(s), station(s): BDP12

Temporal Representation:

The samples were collected between the days of 2010-08-31 and 2019-06-12 .

Environmental Conditions:

QAPP Information:

QAPP for the Orange County Beachwatch data

QAPP Information Reference(s):

QAPP for the Orange County Beachwatch data for the 2020 Integrated Report.

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

219807

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Shellfish Harvesting

Number of Samples:

394

Number of Exceedances:

198

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach to determine beneficial use support and the results are as follows: 198 of the 394 samples exceeded the water quality threshold for Coliform, Total. The water quality threshold is based on a 10% exceedance rate that is calculated for a 30-Day peroid.

Data Reference:

Coastal Counties in Region 9 including: Orange, San Diego, and Los Angeles counties.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2019) states that not more than 10 percent of the total coliform samples shall exceed 230 per 100 mL.

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(s), station(s): BDP15

Temporal Representation:

The samples were collected between the days of 2010-08-31 and 2019-06-10 .

Environmental Conditions:

QAPP Information:

QAPP for the Orange County Beachwatch data

QAPP Information Reference(s):

QAPP for the Orange County Beachwatch data for the 2020 Integrated Report.

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

81131

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

247

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed bw data for Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach to determine beneficial use support and results are as follows: 38 of 247 samples exceed the criterion for Coliform, Total.

Data Reference:

Data for Region 9 Beach Watch.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The California Ocean Plan states that for the protection of REC-1 activities, the concentration of total coliform should not exceed 10,000/100ml.

Objective/Criterion Reference:

California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach was collected at 4 monitoring sites [ WEST END/BABY BEACH, BUOY LINE/BABY BEACH, SWIM AREA/BABY BEACH, EAST END/BABY BEACH] These stations are within 200 meters of eachother but were not averaged for this assessment.

Temporal Representation:

Data was collected over the time period 1/3/2008-8/26/2010.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The samples were collected for the Beach Watch program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

30906

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

324

Number of Exceedances:

Data and Information Type:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

Beach monitoring data was collected from a Janaury 2002 through December 2006. Two of 324 individual samples collected exceeded the single sample maximum water quality objective.

Data Reference:

Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Single Sample Maximum: Total coliform density shall not exceed 10,000 per 100ml;

Objective/Criterion Reference:

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

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected from Dana Point Harbor at Baby Beach, (station ID BDP 12, 13, 14 and 15), in the Dana Point HSA.

Temporal Representation:

Samples were collected weekly from January 2002 through December 2006.

Environmental Conditions:

QAPP Information:

Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of Orange Quality Assessment/Quality Control document.

QAPP Information Reference(s):

County of Orange. Quality Assurance/Quality Control Manual, February 2004 Bacteria specific

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

81134

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

154

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed bw data for Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach to determine beneficial use support and results are as follows: 14 of 154 samples exceed the criterion for Enterococcus.

Data Reference:

Data for Region 9 Beach Watch.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The California Ocean Plan states that for the protection of REC-1 activities, the median concentration of enterococcus should not exceed 35/100ml in a 30-day period .

Objective/Criterion Reference:

California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Data was collected over the time period 1/3/2008-8/26/2010.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The samples were collected for the Beach Watch program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

30912

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:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

Beach monitoring data was collected from a January 2002 through December 2006. Nine of 35 monthly geomeans exceeded the geomean water quality objective.

Data Reference:

Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Geomean: Enterococcus density shall not exceed 35 per 100 ml.

Objective/Criterion Reference:

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

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected from Dana Point Harbor, (station id BDP 12, 13, 14, and 15), in the Dana Point HSA.

Temporal Representation:

Samples were collected weekly from January 2002 through December 2006.

Environmental Conditions:

QAPP Information:

Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of Orange Quality Assessment/Quality Control document.

QAPP Information Reference(s):

County of Orange. Quality Assurance/Quality Control Manual, February 2004 Bacteria specific

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

30911

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

324

Number of Exceedances:

103

Data and Information Type:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

Beach monitoring data was collected from January 2002 through December 2006. One hundred-three of 324 samples exceeded the single sample water quality objective.

Data Reference:

Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Single Sample Maximum: Enterococcus density shall not exceed 104 per 100 ml;

Objective/Criterion Reference:

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

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected from Dana Point Harbor, (station id BDP 12, 13, 14, and 15), in the Dana Point HSA.

Temporal Representation:

Samples were collected weekly from January 2002 through December 2006.

Environmental Conditions:

QAPP Information:

Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of Orange Quality Assessment/Quality Control document.

QAPP Information Reference(s):

County of Orange. Quality Assurance/Quality Control Manual, February 2004 Bacteria specific

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

95653

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

434

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed beach monitoring data for Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach to determine beneficial use support and results are as follows: 55 of 434 samples exceed the criterion for Enterococcus.

Data Reference:

Data for Region 9 Beach Watch.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The California Ocean Plan states that for the protection of REC-1 activities, the concentration of enterococcus should not exceed 104/100ml.

Objective/Criterion Reference:

California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach was collected at 4 monitoring sites BDP 12, 13, 14, and 15. These stations are within 200 meters of eachother but were not averaged for this assessment.

Temporal Representation:

Data was collected over the time period 2002 to 2006. Due to the installation of dry-weather diverter in 2005, only data from January 4, 2006 and beyond were included in the assessment.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of Orange Quality Assessment/Quality Control document.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

81133

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

247

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed bw data for Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach to determine beneficial use support and results are as follows: 23 of 247 samples exceed the criterion for Enterococcus.

Data Reference:

Data for Region 9 Beach Watch.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The California Ocean Plan states that for the protection of REC-1 activities, the concentration of enterococcus should not exceed 104/100ml.

Objective/Criterion Reference:

California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Data was collected over the time period 1/3/2008-8/26/2010.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The samples were collected for the Beach Watch program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

30910

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:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

Beach monitoring data was collected from January 2006 through December 2006. One of 35 monthly geomeans exceeded the geomean water quality objective.

Data Reference:

Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Geomean: Fecal coliform density shall not exceed 200 per 100ml.

Objective/Criterion Reference:

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

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected from Dana Point Harbor, (station id BDP 12, 13, 14, and 15), in the Dana Point HSA.

Temporal Representation:

Samples were collected weekly from January 2002 through December 2006.

Environmental Conditions:

QAPP Information:

Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of Orange Quality Assessment/Quality Control document.

QAPP Information Reference(s):

County of Orange. Quality Assurance/Quality Control Manual, February 2004 Bacteria specific

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

30909

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

324

Number of Exceedances:

Data and Information Type:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

Beach monitoring data was collected from a January 2002 through December 2006. Thirty-seven of 324 samples exceeded the single sample maximum water quality objective.

Data Reference:

Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Single Sample Maximum: Fecal coliform density shall not exceed 400 per 100 ml;

Objective/Criterion Reference:

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

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected from Dana Point Harbor at Baby Beach, (station id BDP 12, 13,14 and 15), in the Dana Point HSA.

Temporal Representation:

Samples were collected weekly from January 2002 through December 2006.

Environmental Conditions:

QAPP Information:

Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of Orange Quality Assessment/Quality Control document.

QAPP Information Reference(s):

County of Orange. Quality Assurance/Quality Control Manual, February 2004 Bacteria specific

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

81132

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

248

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed bw data for Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach to determine beneficial use support and results are as follows: 3 of 248 samples exceed the criterion for Coliform, Fecal.

Data Reference:

Data for Region 9 Beach Watch.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The California Ocean Plan states that for the protection of REC-1 activities, the concentration of fecal coliform should not exceed 400/100ml.

Objective/Criterion Reference:

California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Data was collected over the time period 1/3/2008-8/26/2010.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The samples were collected for the Beach Watch program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

30908

Pollutant:

Indicator Bacteria

LOE Subgroup:

Health Advisories

Matrix:

-N/A

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

For the period from January 2000 to December 2006, there were 4433 beach postings days for all of Dana Point Harbor. When a bacteriological sample exceeds water quality standards, signs are posted indicating that waters have exceeded public health standards.

Data and information on the number of beach posting were summarized by the County of Orange in their Annual Ocean and Bay Water Quality Report, March 2007. The reporting period was from January 2000 -December 2006. Data used was the number of days the beach was posting when the ocean or bay failed to meet the bacteriological standards.

Data Reference:

County of Orange. March 2007. Annual Ocean and Bay Water Quality Report, 2006

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Code of Regulations. Title 17, Section 7960.

(a) When a public beach or public water-contact sports area fails to meet any of the standards as set forth in Section 7957 or 7958 above, the local health officer or the Department, after taking into consideration the causes therefor, may at his or its discretion close, post with warning signs, or otherwise restrict use of said public beach or public water-contact sports area, until such time as corrective action has been taken and the standards as set forth in 7957 and 7958 above are met.

Objective/Criterion Reference:

California Code of Regulations, Title 17, Section 7960

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Bacteriological monitoring samples were collected at Dana Point Harbor (Fuel Dock, Baby Beach, Pilgrim Dock, Youth Dock, Harbor Entrance, Guest Dock, Harbor Patrol Dock and M Dock).

Temporal Representation:

The beach posting covers the time frame of January 2000 -December 2006.

Environmental Conditions:

QAPP Information:

Samples were collected in compliance with County of Orange's Quality Assessment/Quality Control document (County of Orange, 2004).

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

30905

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Shellfish Harvesting

Number of Samples:

324

Number of Exceedances:

138

Data and Information Type:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

Beach monitoring data was collected from a January 2002 through December 2006. One hundred thirty-eight of 324 samples exceeded the shellfish single sample maximum water quality objective for total coliform.

Data Reference:

Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

From the Ocean Plan, the median total coliform density shall not exceed 70 per 100 ml, and not more than 10 percent of the samples shall exceed 230 per 100 ml (SWRCB, 2005).

Objective/Criterion Reference:

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

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected from Dana Point Harbor at Baby Beach (station IDs, BDP 12, 13, 14 and 15), in the Dana Point HSA.

Temporal Representation:

Samples were collected weekly from January 2002 through December 2006.

Environmental Conditions:

QAPP Information:

Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of Orange Quality Assessment/Quality Control document.

QAPP Information Reference(s):

County of Orange. Quality Assurance/Quality Control Manual, February 2004 Bacteria specific

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

74637

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Shellfish Harvesting

Number of Samples:

247

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data for Region 9 Beach Watch.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The California Ocean Plan states that at all areas where shellfish may be harvested for human consumption, not more than 10 percent of the samples shall exceed 230 per 100 mL.

Objective/Criterion Reference:

California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Data was collected over the time period 1/3/2008-8/26/2010.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The samples were collected for the Beach Watch program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

30907

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:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

Beach monitoring data was collected January 2002 through December 2006. None of the monthly geomeans exceeded the geomean water quality objective.

Data Reference:

Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Geomean: Total coliform density shall not exceed 1,000 per 100ml (SWRCB, 2005).

Objective/Criterion Reference:

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

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected from Dana Point Harbor at Baby Beach (station id BDP 12, 13, 14 and 15), in the Dana Point HSA.

Temporal Representation:

Samples were collected weekly from Janaury 2002 through December 2006.

Environmental Conditions:

QAPP Information:

Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of Orange Quality Assessment/Quality Control document.

QAPP Information Reference(s):

County of Orange. Quality Assurance/Quality Control Manual, February 2004 Bacteria specific

Line of Evidence (LOE) for Decision ID 127931, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach

LOE ID:

220040

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:

Water Board staff assessed data for Pacific Ocean Shoreline, Dana Point HSA, at Dana Point Harbor at Baby Beach to determine beneficial use support and the results are as follows: 23 of the 91 samples exceeded the Statistical Threshold Value (STV) water quality threshold for Enterococcus. The STV is based on a 10% exceedance rate that is calculated monthly.

Data Reference:

Coastal Counties in Region 9 including: Orange, San Diego, and Los Angeles counties.

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(s), station(s): BDP15

Temporal Representation:

The samples were collected between the days of 2010-08-31 and 2019-06-10 .

Environmental Conditions:

QAPP Information:

QAPP for the Orange County Beachwatch data

QAPP Information Reference(s):

QAPP for the Orange County Beachwatch data for the 2020 Integrated Report.