Final California 2018 Integrated Report (303(d) List/305(b) Report)

Supporting Information

Regional Board 9 - San Diego Region

Water Body Name:	Pacific Ocean Shoreline, Loma Alta HSA, at Loma Alta Creek mouth
Water Body ID:	CAC9041000020091104171140
Water Body Type:	Coastal & Bay Shoreline


DECISION ID	76921	Region 9
Pacific Ocean Shoreline, Loma Alta HSA, at Loma Alta Creek mouth

Pollutant:	Indicator Bacteria
Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)(2016)
Revision Status	Original
Sources:	A Source Unknown \| Natural Sources \| Nonpoint Source \| Point Source
Expected TMDL Completion Date:	2019
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for removal from the CWA section 303(d) List under section 4.2 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status. One line of evidence are available in the administrative record to assess this pollutant. Based on the place holder LOE, this water body is a split segment of a water body previously demonstrated impaired for indicator bacteria. No new information is available to demonstrate improvement of water quality at this segment. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from 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.Based on the place holder LOE, this water body is a split segment of a water body previously demonstrated impaired for indicator bacteria. No new information is available to demonstrate improvement of water quality at this segment. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are 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 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:

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 76921, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, Loma Alta HSA, at Loma Alta Creek mouth

LOE ID:

30472

Pollutant:

Indicator Bacteria

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

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

For the 2008 assessment , the 2006 listed coastline 'Pacific Ocean Shoreline, Loma Alta HSA' was split into smaller segments and each represents an area near the sampling location of the data being assessed. This segment 'Pacific Ocean Shoreline, Loma Alta HSA, Oceanside at Loma Alta Creek mouth' is one of the sampling locations. This LOE is a copy of the 2006 listing placeholder LOE for Pacific Ocean Shoreline, Loma Alta HSA and is considered by the Regional Board to be applicable to this more specific segment formed from the split.

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:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Environmental Conditions:

QAPP Information:

Unspecified

QAPP Information Reference(s):


DECISION ID	84167	Region 9
Pacific Ocean Shoreline, Loma Alta HSA, at Loma Alta Creek mouth

Pollutant:	Trash
Final Listing Decision:	List on 303(d) list (being addressed by action other than TMDL)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (being addressed by action other than TMDL)(2016)
Revision Status	Original
Sources:	A Source Unknown
Expected Attainment Date:	2029
Implementation Action Other than TMDL:	Collected effort of public, agencies, organizations, and permittees. Methods include street sweeping, education programs on littering, installation of trash-catching devices on storm drains.
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 3.7 of the Listing Policy. Under this section when all other listing factors do not result in the listing of a water segment but information indicates non-attainment of standards, a water segment shall be evaluated to determine whether the weight of evidence demonstrates that water quality standard is not attained. If the weight of evidence indicates non-attainment, the water segment shall be placed on the CWA section 303(d) List. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for placing this water segment-pollutant combination from 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 following information indicates that the water quality standard is not being attained: Coastkeeper cleanups occurred on 6/9/07,6/14/08, 6/13/09 and 6/12/10 for this water body. The total weight of trash (lbs) collected on these dates was 1,028.8. However, using the metric, Coastkeeper classified this water body as severe for trash impairment. However, any trash found is an exceedance and needs to be addressed by an action other than a TMDL. 3. This process is scientifically defensible and reproducible.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.

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 84167, Trash	Region 9
Pacific Ocean Shoreline, Loma Alta HSA, at Loma Alta Creek mouth

LOE ID:

74689

Pollutant:

Trash

LOE Subgroup:

Pollutant-Nuisance

Matrix:

Not Recorded

Fraction:

None

Beneficial Use:

Non-Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

Occurrence of conditions judged to cause impairment

Data Used to Assess Water Quality:

The San Diego Coastkeeper conducts trash cleanups and uses a metric (pounds of trash collected per volunteer) to compare levels of trash across beaches and categorizes beaches as either low, medium, high or severe, based on this metric. Coastkeeper cleanups occurred on 6/9/07,6/14/08, 6/13/09 and 6/12/10 for this water body. The total weight of trash (lbs) collected on these dates was 1,028.8. However, using the metric, Coastkeeper classified this water body as severe for trash impairment.

Data Reference:

Data for Trash, Nutrients, and Pathogens in Region 9, 2007-2010.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Floating Material Waters shall not contain floating material, including solids, liquids, foams, and scum in concentrations which cause nuisance or adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the San Diego Basin