# Draft 2008 California 303(d)/305(b) Integrated Report

# Supporting Information

## Regional Board 3 - Central Coast Region

Water Body Name: | Pacific Ocean (Point Pinos to Point Sur)
Water Body ID: | CAO3080001020090612085224
Water Body Type: | Ocean

DECISION ID | 17049
Pollutant: | Dieldrin
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 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. A single line of evidence is available in the administrative record to assess this pollutant. One of the 20 samples exceed the OEHHA screeninv value for Shellfish Harvesting. 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. One of the 20 samples exceed the OEHHA screeninv value for Shellfish Harvesting and this does not exceed the allowable frequency listed in Table 3.1 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 17049

LOE ID: | 30098
Pollutant: | Dieldrin
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | None
Beneficial Use: | Shellfish Harvesting
Number of Samples: | 20
Number of Exceedances: | 1
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: | Resident mussles (composites (40-50 individuals) of resident Mytilus californianus) were collected by CCLEAN staff twice a year in 2002, 2003, 2004, 2005 and 2006 at two sample locations. One of the 20 composite samples exceeded the OEHHA screening value for shellfish.
Data Reference: | Final Data CCLEAN Mussel Tissue and Solid Phase Extraction data
Water Quality Objective/Criterion: | OEHHA Screening value for the protection of human health from the consumption of fish and shellfish. Brodberg and Pollock calculated "California Lakes Screening Values" for a 70 kg adult human and based on a fish consumption value of 21 g/day (1999). OEHHA Screening Value in fish and shellfish tissue for Dieldrin is 2.0 ug/Kg.
Objective/Criterion Reference: | Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | Mussles were collected from two coastal locations: Rock outcrop adjacent to Carmel River Mouth (Ocean View Avenue in Carmel, where it ends at Scenic Road) and rock outcrop at Fanshell overlook (just west of the intersection of Spyglass Hill Road and 17Mile Drive).
Temporal Representation: | Samples were collected twice a year in 2002, 2003, 2004, 2005 and 2006.
Environmental Conditions: |
QAPP Information: | CCLEAN has an approved QAPP
QAPP Information Reference(s):