DEVELOPING SAFE EATING GUIDELINES FOR CENTRAL VALLEY SPORT FISH

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DEVELOPING SAFE EATING GUIDELINES FOR CENTRAL
VALLEY SPORT FISH
Robert Brodberg, Margy Gassel, Susan Klasing,
and Sue Roberts
Office of Environmental Health Hazard
Assessment California Environmental Protection
Agency
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OEHHAs Activities

• Task 1 3 Monitoring design to characterize
  water bodies to support developing advisories.
  Formulate monitoring plans for sport fish.
• Task 7 Assess risks in water bodies using
  existing data or project data and develop fish
  consumption advisories.
• Task 8 Communicate risks and safe eating
  guidelines using advisories and associated
  materials.

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Monitoring Overview

• Year 1
• Cosumnes, Mokelumne Feather Rivers
• San Joaquin River and Delta from Mokelumne River
  south
• Salmon, steelhead, hatchery trout
• Year 2
• Sacramento River tributaries north Delta
• Lake Shasta and other northern reservoirs
• Striped bass, shad, sturgeon
• Year 3
• San Joaquin R. tributaries and reservoirs

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2005 ACTIVITIES

• Detailed sampling plan
• Interactive coordination monitoring
• Spreadsheet target sites, species number
  samples
• DFG reported collections on a regular basis
  OEHHA feedback
• OEHHA created analysis instructions
• Coordinated resampling
• Coordination of organics analyses
• SRWP
• Region 5, SWAMP

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Collection Spreadsheet
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Analysis Spreadsheet
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Resampling Instructions
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2005 ACTIVITIES (cont.)

• OEHHA workplan for advisory development
• Coordination of Delta communication materials
  with DHS
• Coordination of advisory outreach materials
• Lake Berryessa Putah Creek
• Advisory pocket cards for Lake Berryessa Putah
  Creek
• Lower Cosumnes Mokelumne Rivers
• Draft Advisory Lower Cosumnes Mokelumne Rivers

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Putah Creek Pocket Card
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Cosumnes and Mokelumne River Sampling Sites
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Risk Assessment

• Exposure for a virtual consumer
• Use Hg RfD as a safe exposure level
• Women childbearing age/children
• Women beyond childbearing age/men
• Determine multiple safe eating levels for
  different consumption frequencies
• Determine concentrations in fishequal to safe
  eating levels (GTLs)
• Draft GTLs for other chemicals
• Issue advisory based on measured tissue
• concentrations in fish

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Darell Slotton, UCD
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Introduction to Safe Eating Guidelines

• Safe eating guidelines more positive
• Focus first on benefits
• AHA recommendations

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SAFE EATING GUIDELINESFOR FISH CONSUMPTION
FROMTHE LOWER COSUMNES RIVER
Women of childbearing age, pregnant or
breastfeeding women, and children 17 years and
under
Asiatic clams may be eaten up to 3 meals a week
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SAFE EATING GUIDELINESFOR FISH CONSUMPTION
FROMTHE LOWER COSUMNES RIVER

• Women beyond childbearing age and men

Asiatic clams may be eaten up to 3 times a week
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SAFE EATING GUIDELINESFOR FISH CONSUMPTION
FROMTHE LOWER MOKELUMNE RIVER
Women of childbearing age, pregnant or
breastfeeding women, and children 17 years and
under
Asiatic clams may be eaten up to 3 times a week
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SAFE EATING GUIDELINESFOR FISH CONSUMPTION
FROMTHE LOWER MOKELUMNE RIVER

• Women beyond childbearing age and men

Asiatic clams may be eaten up to 3 times a week
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DELTA STRIPED BASS ADVISORY
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General Information Related to Recommendations

• Larger fish more contaminated

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Commercial Fish Information

• Commercial information
• AHA-Federal recommendation

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Untested Water Bodies
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Questions on 2005 Activities?
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Plans for 2006

• Develop 2006 sampling matrix and draft plan for
  review
• Sacramento River tributaries north Delta
• Lake Shasta and other northern reservoirs
• Striped bass, shad, sturgeon
• Develop final detailed plan and collection
  spreadsheet
• Interactive coordination with DFG during sampling
• Develop analysis plan, resampling plan,
  coordinate external organics analyses

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Plans for 2006 (cont.)

• Advisories for 2006
• Feather River
• San Joaquin River and Delta from Mokelumne River
  south
• Continued coordination with DHS to develop
  outreach plans materials
• Begin other advisories for 2007
• Sacramento River and north Delta
• Regional salmon steelhead
• Hatchery trout
• Require organics results to complete

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Plans for 2006 (cont.)

• Consider developing format for collection of
  fishing site, activity and species data for 2007
  sampling planning
• San Joaquin River tributaries
• Calaveras
• Stanislaus
• Tuolumne
• Merced
• Southern tributary reservoirs
• New Hogan
• New Melones Lake Tulloch
• Don Pedro
• Lake McSwain Lake McClure

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Plans for 2006 (cont.)

• Planning for 2007 sampling (cont.)
• Other southern reservoirs
• Lake Amador
• Woodward Res.
• Yosemite Lake
• Eastman Lake
• Hensley Lake
• Modesto Res.
• San Luis Res.
• ONeill Forebay
• Other water bodies
• California Aqueduct

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Comments/Discussion