| |
| 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: |
9 |
| |
| Data and Information Type: |
PATHOGEN MONITORING |
| Data Used to Assess Water Quality: |
Of the 490 samples collected, 9 exceed 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 |
| |
| 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: |
Of the 490 samples collected, 9 exceed the following criteria, or guidelines as stated in the ocean plan: Enterococcus <104MPN/100mL |
| 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 datas 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. |
| QAPP Information Reference(s): |
|
| |
| LOE ID: |
5920 |
| |
| Pollutant: |
Enterococcus |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
None |
| |
| Beneficial Use: |
Water Contact Recreation |
| |
| Number of Samples: |
490 |
| Number of Exceedances: |
12 |
| |
| Data and Information Type: |
PATHOGEN MONITORING |
| Data Used to Assess Water Quality: |
Of the 490 samples collected, 12 exceed 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 |
| |
| 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: |
Of the 490 samples collected, 12 exceed the following criteria, or guidelines as stated in the Ocean Plan: Enterococcus Standard in Ocean Plan: Enterococcus <104MPN/100mL |
| 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 adjacent to the Bolsa Chica Reserve in the 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 datas 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. |
| QAPP Information Reference(s): |
| |
DECISION ID |
12571 |
| |
| 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 |
| |
| Weight of Evidence: |
This pollutant is being considered for placement on the 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.
Two lines of evidence are available in the administrative record to assess this pollutant. Eleven of the samples exceed the water quality 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 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. Eleven of 490 samples exceeded the AB 411 Standard and this does not 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 Decision / Staff 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. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 12571 |
| |
| LOE ID: |
5921 |
| |
| Pollutant: |
Fecal Coliform |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
None |
| |
| Beneficial Use: |
Water Contact Recreation |
| |
| Number of Samples: |
490 |
| Number of Exceedances: |
7 |
| |
| Data and Information Type: |
PATHOGEN MONITORING |
| Data Used to Assess Water Quality: |
Of the 490 samples collected, 7 exceed 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 |
| |
| 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: Fecal Coliform density shall not exceed 400 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: |
Of the 490 samples collected, 7 exceed the following criteria, or guidelines as stated in the Ocean Plan: Fecal Coliform Standard in Ocean Plan: Fecal Coliform <400MPN/100mL |
| 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 Reserve 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: |
Data was collected by the Orange County Environmental Health Agency and provided to the Regional Board by the State Water Resources Control Board for the sole purpose of the water quality assessment and update of the 2008 303d list. The datas 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. |
| QAPP Information Reference(s): |
|
| |
| LOE ID: |
5681 |
| |
| Pollutant: |
Fecal Coliform |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
None |
| |
| Beneficial Use: |
Water Contact Recreation |
| |
| Number of Samples: |
490 |
| Number of Exceedances: |
4 |
| |
| Data and Information Type: |
PATHOGEN MONITORING |
| Data Used to Assess Water Quality: |
Of the 490 samples collected, 4 exceed 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 |
| |
| 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: Fecal Coliform density shall not exceed 400 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: |
Of the 490 samples collected, 4 exceed the following criteria, or guidelines as stated in the Ocean Plan: Fecal Coliform Standard in Ocean Plan: Fecal Coliform <400MPN/100mL |
| 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 datas 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. |
| QAPP Information Reference(s): |
| |
DECISION ID |
12573 |
| |
| 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 |
| |
| Weight of Evidence: |
This pollutant is being considered for placement on the 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.
Two lines of evidence are available in the administrative record to assess this pollutant. Three of the samples exceed the water quality 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 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. Three of 490 samples exceeded the AB 411 Standard and this does not 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 Decision / Staff 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. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 12573 |
| |
| LOE ID: |
5669 |
| |
| Pollutant: |
Total Coliform |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
None |
| |
| Beneficial Use: |
Water Contact Recreation |
| |
| Number of Samples: |
490 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
PATHOGEN MONITORING |
| Data Used to Assess Water Quality: |
Of the 490 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 |
| |
| 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: |
Of the 490 samples collected, none exceed the following criteria, or guidelines as stated in the Ocean Plan: Total Coliform Standard in Ocean Plan: Total Coliform <1000MPN/100mL if Fecal Coliform to Total Fecal Coliform ratio is >0.1MPN/100mL |
| 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 datas 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. |
| QAPP Information Reference(s): |
|
| |
| LOE ID: |
5922 |
| |
| Pollutant: |
Total Coliform |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
None |
| |
| Beneficial Use: |
Water Contact Recreation |
| |
| Number of Samples: |
490 |
| Number of Exceedances: |
3 |
| |
| Data and Information Type: |
PATHOGEN MONITORING |
| Data Used to Assess Water Quality: |
Of the 490 samples collected, 3 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 |
| |
| 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: |
Of the 490 samples collected, 3 exceed the following criteria, or guidelines as stated in the Ocean Plan: Total Coliform Standard in Ocean Plan: Total Coliform <1000MPN/100mL if Fecal Coliform to Total Fecal Coliform ratio is >0.1MPN/100mL |
| 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 Reserve 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 datas 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. |
| QAPP Information Reference(s): |