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

Supporting Information

Regional Board 8 - Santa Ana Region

Water Body Name:	Bolsa Chica State Beach
Water Body ID:	CAX8011100019991012170142
Water Body Type:	Coastal & Bay Shoreline


DECISION ID	73572	Region 8
Bolsa Chica State Beach

Pollutant:	Indicator Bacteria
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status. Fourteen (14) lines of evidence are available in the administrative record to assess this pollutant. Three (3) of 772 samples exceed the Enterococcus Geomean Objective. Fifteen (15) of 923 samples exceed the Enterococcus Single Sample Objective. Thirty Six (36) of 777 samples exceed the Fecal Coliform Geomean Objective. Zero (0) of 311 samples exceed the Fecal Coliform Single Sample Objective. Zero (0) of 3832 samples exceed the Total Coliform Geomean Objective. Zero (0) of 3853 samples exceed the Total Coliform Single Sample Objective. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Three (3) of the 772 samples exceed the Enterococcus Geomean Objective, 36 of the 777 samples exceed the Fecal Coliform Geomean Objective, Zero (0) of the 3832 samples exceed the Total Coliform Geomean, and this does not exceed the frequency listed in table 3.2 4. Fifteen (15) of the 923 samples exceed the Enterococcus Single Sample Objective, Zero (0) of the 311 samples exceed the Fecal Coliform Single Sample Objective, Zero (0) of the 3853 samples exceed the Total Coliform Single Sample, and this does not exceed the frequency listed in table 3.2 5. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

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

Line of Evidence (LOE) for Decision ID 73572, Indicator Bacteria	Region 8
Bolsa Chica State Beach

LOE ID:

81308

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

311

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed BeachWatch data for Bolsa Chica State Beach to determine beneficial use support and results are as follows: 0 of 311 samples exceed the criterion for Coliform, Fecal.

Data Reference:

Data for Region 8 Beach Watch.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2009) single sample maximum states that fecal coliform density shall not exceed 400 per 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 Bolsa Chica State Beach was collected at 2 monitoring sites [ Bolsa Chica Reserve, Bolsa Chica Beach]

Temporal Representation:

Data was collected over the time period 1/2/2009-8/30/2010.

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 73572, Indicator Bacteria	Region 8
Bolsa Chica State Beach

LOE ID:

5681

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

488

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Of the 488 samples collected, 36 exceed the standards/guidelines listed above.

Data Reference:

Bacteria data for Orange County beaches downloaded from Orange County Health Care website.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

As stated in the California Ocean Plan, under the SWRCB Water-Contact Standards using a 30d geometric mean maximum, within a zone bounded by the shoreline and a distance of 1,000 feet from the shoreline or the 30-foot depth contour, whichever is further from the shoreline, and in areas outside this zone used for water contact sports, as determined by the Regional Board (i.e., waters designated as REC-1), but including all kelp* beds, the following bacterial objectives shall be maintained throughout the water column: 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:

The 488 samples were collected at the Bolsa Chica Beach station located on Bolsa Chica State Beach.

Temporal Representation:

The 488 samples were collected between April 2004 and December 2006

Environmental Conditions:

The data spanned 3 entire years including wet and dry seasons.

QAPP Information:

The data¿s quality is deemed appropriate because it was collected by the Orange County Environmental Health Agency and provided to the Regional Board via the State Water Resources Control Board for the sole purpose of the water quality assessment and update of the 2008 303d list. The EPA Method/Analytical Detection Limit used was MF_APHA_9222_D.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 73572, Indicator Bacteria	Region 8
Bolsa Chica State Beach

LOE ID:

81310

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

144

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Zero of the 144 geomeans exceeded the objective.

Data Reference:

Data for Region 8 Beach Watch.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The standard for fecal coliform states that the coliform density shall not exceed 400 per 100 mL. Water Quality Control Plan for Ocean Waters 2009.

Objective/Criterion Reference:

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

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected at Bolsa Chica Reserve.

Temporal Representation:

Samples were collected approximately once a week from January 2009 to January 2010 and twice in August 2010.

Environmental Conditions:

QAPP Information:

The samples were collected for the beach watch program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 73572, Indicator Bacteria	Region 8
Bolsa Chica State Beach

LOE ID:

81309

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

145

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Zero of the 145 geomeans exceeded the objective.

Data Reference:

Data for Region 8 Beach Watch.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The standard for fecal coliform states that the coliform density shall not exceed 400 per 100 mL. Water Quality Control Plan for Ocean Waters 2009.

Objective/Criterion Reference:

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

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected at Bolsa Chica Beach.

Temporal Representation:

Samples were collected approximately once a week from January 2009 to January 2010 and twice in August 2010.

Environmental Conditions:

QAPP Information:

The samples were collected for the beach watch program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 73572, Indicator Bacteria	Region 8
Bolsa Chica State Beach

LOE ID:

81311

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

310

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed BeachWatch data for Bolsa Chica State Beach to determine beneficial use support and results are as follows: 0 of 310 samples exceed the criterion for Coliform, Total.

Data Reference:

Data for Region 8 Beach Watch.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (2009) single sample maximum states that total coliform density shall not exceed 10,000 per 100 mL

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 Bolsa Chica State Beach was collected at 2 monitoring sites [ Bolsa Chica Reserve, Bolsa Chica Beach]

Temporal Representation:

Data was collected over the time period 1/2/2009-8/30/2010.

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 73572, Indicator Bacteria	Region 8
Bolsa Chica State Beach

LOE ID:

5669

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

3543

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Of the 3543 samples collected, none exceeded the standards/guidelines listed above.

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

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

As stated in the California Ocean Plan, under the SWRCB Water-Contact Standards using a single sample maximum, within a zone bounded by the shoreline and a distance of 1,000 feet from the shoreline or the 30-foot depth contour, whichever is further from the shoreline, and in areas outside this zone used for water contact sports, as determined by the Regional Board (i.e., waters designated as REC-1), but including all kelp* beds, the following bacterial objectives shall be maintained throughout the water column: Total Coliform density shall not exceed 10,000 per 100 ml and Total Coliform density shall not exceed 1,000 per 100 ml when the Fecal
Coliform/Total Coliform ratio exceeds 0.1.

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:

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

Spatial Representation:

The 3543 samples were collected at the Bolsa Chica Beach station (39 N) located on Bolsa Chica State Beach.

Temporal Representation:

The 490 samples were collected between January 1986 through December 2008

Environmental Conditions:

The data spanned wet and dry seasons.

QAPP Information:

The data¿s quality is deemed appropriate because it was collected by the Orange County Environmental Health Agency .

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 73572, Indicator Bacteria	Region 8
Bolsa Chica State Beach

LOE ID:

5922

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

3544

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Of the 3544 samples collected, none exceeded the standards/guidelines listed above.

Data Reference:

Bacteria data for Orange County beaches downloaded from Orange County Health Care website.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

As stated in the California Ocean Plan, under the SWRCB Water-Contact Standards using a 30d geometric mean maximum, within a zone bounded by the shoreline and a distance of 1,000 feet from the shoreline or the 30-foot depth contour, whichever is further from the shoreline, and in areas outside this zone used for water contact sports, as determined by the Regional Board (i.e., waters designated as REC-1), but including all kelp* beds, the following bacterial objectives shall be maintained throughout the water column: Total Coliform density shall not exceed 1,000 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:

The 3544 samples were collected at the Bolsa Chica Reserve station located on Bolsa Chica State Beach.

Temporal Representation:

The 3544 samples were collected between 1986 and December 2008

Environmental Conditions:

The data spanned wet and dry seasons.

QAPP Information:

The data¿s quality is deemed appropriate because it was collected by the Orange County Environmental Health Agency. The EPA Method/Analytical Detection Limit used was MF_APHA_922_B.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 73572, Indicator Bacteria	Region 8
Bolsa Chica State Beach

LOE ID:

81320

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

144

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Zero of the 144 geomeans exceeded the objective.

Data Reference:

Data for Region 8 Beach Watch.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The standard for total coliform states that the coliform density shall not exceed 1000 per 100 mL. Water Quality Control Plan for Ocean Waters 2009.

Objective/Criterion Reference:

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

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected at Bolsa Chica Reserve.

Temporal Representation:

Samples were collected approximately once a week from January 2009 to January 2010 and twice in August 2010.

Environmental Conditions:

QAPP Information:

The samples were collected for the beach watch program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 73572, Indicator Bacteria	Region 8
Bolsa Chica State Beach

LOE ID:

81319

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

144

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Zero of the 144 geomeans exceeded the objective.

Data Reference:

Data for Region 8 Beach Watch.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The standard for total coliform states that the coliform density shall not exceed 1000 per 100 mL. Water Quality Control Plan for Ocean Waters 2009.

Objective/Criterion Reference:

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

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected at Bolsa Chica Beach.

Temporal Representation:

Samples were collected approximately once a week from January 2009 to January 2010 and twice in August 2010.

Environmental Conditions:

QAPP Information:

The samples were collected for the beach watch program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 73572, Indicator Bacteria	Region 8
Bolsa Chica State Beach

LOE ID:

81307

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

144

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Zero of the 144 geomeans exceeded the objective.

Data Reference:

Data for Region 8 Beach Watch.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The standard for enterococcus states that the density shall not exceed 35 per 100 mL. Water Quality Control Plan for Ocean Waters 2009.

Objective/Criterion Reference:

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

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected at Bolsa Chica Reserve.

Temporal Representation:

Samples were collected approximately once a week from January 2009 to January 2010 and twice in August 2010.

Environmental Conditions:

QAPP Information:

The samples were collected for the beach watch program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 73572, Indicator Bacteria	Region 8
Bolsa Chica State Beach

LOE ID:

81306

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

145

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Zero of the 145 geomeans exceeded the objective.

Data Reference:

Data for Region 8 Beach Watch.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The standard for enterococcus states that the density shall not exceed 35 per 100 mL. Water Quality Control Plan for Ocean Waters 2009.

Objective/Criterion Reference:

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

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected at Bolsa Chica Beach.

Temporal Representation:

Samples were collected approximately once a week from January 2009 to January 2010 and twice in August 2010.

Environmental Conditions:

QAPP Information:

The samples were collected for the beach watch program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 73572, Indicator Bacteria	Region 8
Bolsa Chica State Beach

LOE ID:

81305

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

311

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed BeachWatch data for Bolsa Chica State Beach to determine beneficial use support and results are as follows: 6 of 311 samples exceed the criterion for Enterococci.

Data Reference:

Data for Region 8 Beach Watch.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2009) single sample maximum states that enterococcus density shall not exceed 104 per 100 mL.

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 Bolsa Chica State Beach was collected at 2 monitoring sites [ Bolsa Chica Reserve, Bolsa Chica Beach]

Temporal Representation:

Data was collected over the time period 1/2/2009-8/30/2010.

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 73572, Indicator Bacteria	Region 8
Bolsa Chica State Beach

LOE ID:

5680

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

490

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Of the 490 samples collected, 9 exceed the Ocean Plan Standard for Enterococcus <104MPN/100mL The Single Sample Maximum under the SWRCB Water-Contact Standards from the California Ocean Plan was used to assess this bacterium.

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

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

As stated in the California Ocean Plan, under the SWRCB Water-Contact Standards using a single sample maximum, within a zone bounded by the shoreline and a distance of 1,000 feet from the shoreline or the 30-foot depth contour, whichever is further from the shoreline, and in areas outside this zone used for water contact sports, as determined by the Regional Board (i.e., waters designated as REC-1), but including all kelp* beds, the following bacterial objectives shall be maintained throughout the water column: 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:

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

Spatial Representation:

The 490 samples were collected at the Bolsa Chica Beach station located on Bolsa Chica State Beach.

Temporal Representation:

The 490 samples were collected in 2004 on the days of 4/13-15, 4/17, 4/19-22, 4/26-29, 5/1, 5/3-6, 5/8, 5/10-13, 5/15, 5/17-20, 5/22, 5/24-27, 5/29, 5/31, 6/1-3, 6/5, 6/7-10, 6/12, 6/14-17, 6/19, 6/21-24, 6/26, 6/28-30, 7/1, 7/3, 7/6-10, 7/12-14, 8/12, 8/14, 8/16-19, 8/21, 8/23-26, 8/28, 8/30-31, 9/1-2, 9/4, 9/6-9, 9/11, 9/13-18, 11/20, 11/22-24, 11/27, 11/29-30, 12/1-2, 12/4, 12/6-9, 12/11, 12/13, 12/14-16, 12/18, 12/20-23; in 2005 on the days of 4/18-21, 4/23, 4/25-28, 4/30, 5/2, 5/3, 5/4, 5/5, 5/7, 5/9, 5/10, 5/11, 5/12, 5/14, 5/16-19, 5/21, 6/16, 6/18, 6/20-23, 6/25, 6/27-28, 7/2, 7/4-7, 7/9, 7/11-14, 7/16, 7/18-21, 7/23, 7/25-28, 7/30, 8/1-4, 8/6, 8/8-11, 8/13, 8/15, 9/1, 9/3, 9/5-8, 9/10, 9/12-15, 9/20-22, 9/24, 9/26-29, 10/3-5, 10/8, 10/10-13, 10/17-20, 10/22, 10/24-27, 10/29, 10/31, 11/1-3, 11/5, 11/7-10, 11/14-17, 11/19, 11/21-23, 11/26, 11/28, 11/29, 12/1, 12/3, 12/5-8, 12/10, 12/12-15, 12/17, 12/19-21, 12/27-29; in 2006 on the days of 1/3, 1/5, 1/9-10, 1/12, 1/14, 1/17-19, 1/21, 1/23-26, 1/28, 1/30, 1/31, 2/1-2, 2/6-9, 2/11, 2/13-14, 2/16, 2/20-23, 2/25, 2/27-28, 3/1-2, 3/4, 3/6-9, 3/11, 3/13-16, 3/18, 3/20-23, 3/25, 3/27, 3/29-30, 4/1, 4/3-6, 4/8, 4/10-13, 4/17-20, 4/22, 4/24-27, 4/29, 5/1-4, 5/6, 5/8-11, 5/13, 5/15-18, 5/20, 5/22-25, 5/27, 5/30-31, 6/1, 6/3, 6/5-8, 6/10, 6/12-15, 6/17, 6/19, 6/21-22, 6/24, 6/26-29, 7/1, 7/3-6, 7/8, 7/10-13, 7/15, 7/17-20, 7/22, 7/25-27, 7/29, 7/31, 8/1-3, 8/5, 8/7-10, 8/12, 8/14-17, 8/21-24, 8/26, 8/28-31, 9/2, 9/5-7, 9/9, 9/11-14, 9/16, 9/18-21, 9/23, 9/25-28, 9/30, 10/2-5, 10/7, 10/9-12, 10/14, 10/16-18, 10/21, 10/23-26, 10/28, 10/30-31, 11/1-2, 11/4, 11/16, 11/18, 11/20-22, 11/25, 11/27-30, 12/2, 12/4-7, 12/11-12, 12/14, 12/18-22, 12/27, and 12/30

Environmental Conditions:

The data spanned 3 entire years including wet and dry seasons.

QAPP Information:

The data¿s quality is deemed appropriate because it was collected by the Orange County Environmental Health Agency.
The EPA Method used was EPA_1600.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 73572, Indicator Bacteria	Region 8
Bolsa Chica State Beach

LOE ID:

5920

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

483

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Of the 483 samples collected, 3 exceed the Ocean Plan standard for Enterococcus <35MPN/100mL The 30d geometric mean Maximum under the SWRCB Water-Contact Standards from the California Ocean Plan was used to assess this bacterium.

Data Reference:

Bacteria data for Orange County beaches downloaded from Orange County Health Care website.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

As stated in the California Ocean Plan, under the SWRCB Water-Contact Standards using a 30d geometric mean maximum, within a zone bounded by the shoreline and a distance of 1,000 feet from the shoreline or the 30-foot depth contour, whichever is further from the shoreline, and in areas outside this zone used for water contact sports, as determined by the Regional Board (i.e., waters designated as REC-1), but including all kelp* beds, the following bacterial objectives shall be maintained throughout the water column: 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:

The 483 samples were collected adjacent to the Bolsa Chica Reserve in the Bolsa Chica State Beach.

Temporal Representation:

The 483 samples were collected daily April 2004 and December 2006

Environmental Conditions:

The data spanned 3 entire years including wet and dry seasons.

QAPP Information:

The data¿s quality is deemed appropriate because it was collected by the Orange County Environmental Health Agency. The EPA Method/Analytical Detection Limit used was EPA_1600.

QAPP Information Reference(s):


DECISION ID	75648	Region 8
Bolsa Chica State Beach

Pollutant:	Copper
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Sources:	A Source Unknown
Expected TMDL Completion Date:	2019
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	There was no new data considered in the 2014 Listing Cycle, this previously made decision will carryover. The following description applies to an earlier Listing Cycle. 303(d) listing decisions made prior to 2006 were not held in an assessment database. The Regional Boards will update this decision when new data and information become available and are assessed.

Regional Board Decision Recommendation:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current. The decision has not changed.

State Board Review of Regional Board Conclusion and Recommendation:

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

Line of Evidence (LOE) for Decision ID 75648, Copper	Region 8
Bolsa Chica State Beach

LOE ID:

4401

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006.

Data Reference:

Placeholder reference pre-2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Unspecified

Objective/Criterion Reference:

Placeholder reference pre-2006 303(d)

Evaluation Guideline:

Unspecified

Guideline Reference:

Placeholder reference pre-2006 303(d)

Spatial Representation:

Unspecified

Temporal Representation:

Unspecified

Environmental Conditions:

Unspecified

QAPP Information:

Unspecified

QAPP Information Reference(s):


DECISION ID	68956	Region 8
Bolsa Chica State Beach

Pollutant:	Nickel
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Sources:	A Source Unknown
Expected TMDL Completion Date:	2019
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	There was no new data considered in the 2014 Listing Cycle, this previously made decision will carryover. The following description applies to an earlier Listing Cycle. 303(d) listing decisions made prior to 2006 were not held in an assessment database. The Regional Boards will update this decision when new data and information become available and are assessed.

Regional Board Decision Recommendation:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current. The decision has not changed.

State Board Review of Regional Board Conclusion and Recommendation:

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

Line of Evidence (LOE) for Decision ID 68956, Nickel	Region 8
Bolsa Chica State Beach

LOE ID:

4402

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006.

Data Reference:

Placeholder reference pre-2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Unspecified

Objective/Criterion Reference:

Placeholder reference pre-2006 303(d)

Evaluation Guideline:

Unspecified

Guideline Reference:

Placeholder reference pre-2006 303(d)

Spatial Representation:

Unspecified

Temporal Representation:

Unspecified

Environmental Conditions:

Unspecified

QAPP Information:

Unspecified

QAPP Information Reference(s):