6-13-06 Fish Mercury Project
Office of Environmental Health Hazard AssessmentOffice of Environmental Health Hazard AssessmentCalifornia Environmental Protection AgencyCalifornia Environmental Protection Agency
DEVELOPING SAFE EATING DEVELOPING SAFE EATING GUIDELINES FOR CENTRAL GUIDELINES FOR CENTRAL
VALLEY SPORT FISHVALLEY SPORT FISH
Robert Brodberg, Margy Gassel, Susan Klasing, and Sue Roberts
6-13-06 Fish Mercury Project
OEHHA’s ActivitiesOEHHA’s 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.
6-13-06 Fish Mercury Project
Monitoring OverviewMonitoring OverviewYear 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
6-13-06 Fish Mercury Project
2005 ACTIVITIES2005 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
Collection SpreadsheetCollection SpreadsheetLength Range (mm)
Species (a) Category 1 Category 2 Category 3 Category 4
Bass, Largemouth (LMB) 200-249 250-304 305-438 >438
NEED 2 2 5 3 12
Size (mm) 247,249 304,291 381,368,353,372,405,339 440,562 12
Sacramento Pikeminnow (SPM) >200
NEED 5 5
COLLECTED
Sacramento Sucker (SS) <340 340-500
NEED 5 5 10
COLLECTED
Catfish, White (WC) 130-179 180-228 229-330 >330
NEED 2 2 5 3
Size (mm) 319,304,310,315,246 530,491,404,351,372,346 11
Bluegill (BG) 90-175
NEED 5
Size (mm) 162,163,150,168,141 5
Sunfish, Redear (RES) 125-225
NEED 5
Size (mm) 165,200,185,164,154 5
Carp (CAR) 400-600
NEED 5
COLLECTED
Catfish, Channel (CC) 300-500 >500
NEED 5
COLLECTED
Crappie(CRP) 125-225 >225
NEED 5
Size (mm) 208 268 2
STATION NAME: Franks Tract Date/s Sampled: 8/3/05
Total # of Samples
Analysis SpreadsheetAnalysis SpreadsheetSTATION NAME: Franks Tract
composite for advisoriescomposite for
advisoriesAnalysis
JD
Species (a)
Bass, Largemouth (LMB)
NEED 12
Size (mm) 12 Hg individualsSacramento Pikeminnow (SPM)
NEED 5
COLLECTED
Sacramento Sucker (SS)
NEED 10
COLLECTED
Catfish, White (WC)
NEED
Size (mm) 11 372, 351, 346, 319, 315, 310, 304 404, 491, 530 Hg ALL individuals, archive composites for organicsBluegill (BG)
NEED
Size (mm) 5 162,163,150,168,141 Hg composite, archive composite for organicsSunfish, Redear (RES)
NEED
Size (mm) 5 165,200,185,164,154 Hg composite, archive composite for organicsCarp (CAR)
NEED
COLLECTED
Catfish, Channel (CC)
NEED
COLLECTED
Crappie(CRP)
NEED
Size (mm) 2 208, 268 Hg compositeBullhead, Brown (BRB)
Size (mm) 5 290,2998,303,318,306 Hg individuals, archive composite for organics
Total # of Samples
Resampling InstructionsResampling InstructionsSampling Results At Reservoirs
Through 10/7/05
Reservoir Caught Target Still Need1 Jenkinson 4 LMB
0 CF 0 KOK 0 RBT 1 RSF 4 PKS 0 CRP
12 BB* 9 CF*
9 KOK* 10 RBT** 10 SF**
10 CRP**
5-8 LMB 9 CF
9 KOK 10 RBT
RSF/PKS2
10 CRP Pardee 12 LMB
10 CCF 0 RBT 0 KOK 10 RSF 0 CRP
12 LMB* 10 CCF* 10 RBT* 9 KOK* 10 SF**
10 CRP**
10 RBT 9 KOK
10 CRP
Camanche 12 LMB 2 CCF 0 KOK 0 RBT 10 BG 0 CRP
12 LMB* 9 CF*
9 KOK* 10 RBT** 10 SF**
10 CRP**
7 CCF 9 KOK 10 RBT
10 CRP
New Hogan 12 LMB 0 SMB 0 CCF 10 BG 0 CRP
12 LMB* 12 SMB* 12 CCF* 10 SF*
10 CRP**
12 SMB 12 CCF
10 CRP
Millerton Lake 13 LMB 1 CCF 0 RBT 12 BG 10 GF 0 CRP
12 BB* 10 CF*
9 RBT** 10 SF** 10 CP**
10 CRP**
9 CF
9 RBT
10 CRP BB = black bass
SF = sunfish spp. RSF = RES = Redear sunfish
RBT = RT = Rainbow trout CCF = CC = Channel catfish
1 Red denotes primary target species, per Fish Sampling Workplan: “For the primary target species, the sampling crew will stay on site until the targets are obtained.”; blue represents secondary target species, per Fish Sampling Workplan: “secondary target species will be collected to the extent possible with a reasonable sampling effort.” 2 Need to fill out collection of sunfish for a total of 10 samples, which can include either 9 RSF or 5 PKS.
6-13-06 Fish Mercury Project
2005 ACTIVITIES (cont.)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
6-13-06 Fish Mercury Project
Putah Creek Pocket CardPutah Creek Pocket Card
Cosumnes and Mokelumne River Sampling SitesCosumnes and Mokelumne River Sampling Sites
MEAN MERCURY CONCENTRATIONS MEAN MERCURY CONCENTRATIONS
in Fish from the Lower Cosumnes Riverin Fish from the Lower Cosumnes River
SPECIESSPECIES MERCURYMERCURY
(ppm)(ppm)
LENGTHLENGTH
(mm)(mm)
SAMPLE SAMPLE SIZESIZE
Asiatic ClamAsiatic Clam 0.040.04 2727 7777
BluegillBluegill 0.340.34 119119 55
Largemouth BassLargemouth Bass 1.181.18 381381 1818
Red Swamp CrayfishRed Swamp Crayfish 0.420.42 4444 2121
Redear SunfishRedear Sunfish 0.300.30 153153 1313
Sacramento SuckerSacramento Sucker 0.450.45 413413 77
Signal CrayfishSignal Crayfish 0.290.29 4141 77
White CatfishWhite Catfish 0.540.54 294294 55
MEAN MERCURY CONCENTRATIONS MEAN MERCURY CONCENTRATIONS
in Fish from the Lower Mokelumne Riverin Fish from the Lower Mokelumne River
SPECIESSPECIES MERCURYMERCURY(ppm)(ppm)
LENGTHLENGTH(mm)(mm)
SAMPLE SAMPLE SIZESIZE
Asiatic ClamAsiatic Clam 0.030.03 2222 105105
BluegillBluegill 0.250.25 176176 2525
Largemouth BassLargemouth Bass 0.810.81 368368 3737
Sacramento PikeminnowSacramento Pikeminnow 0.570.57 293293 33
Sacramento SuckerSacramento Sucker 0.300.30 327327 77
Signal CrayfishSignal Crayfish 0.180.18 4848 8383
White CatfishWhite Catfish 0.250.25 257257 1010
6-13-06 Fish Mercury Project
Risk AssessmentRisk Assessment Exposure for a “virtual consumer” Use Hg RfD as a “safe exposure” level
Women childbearing age/childrenWomen 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
Darell Slotton, UCDDarell Slotton, UCD
6-13-06 Fish Mercury Project
Introduction to Safe Eating Introduction to Safe Eating GuidelinesGuidelines
Safe eating guidelines more positiveFocus first on benefitsAHA recommendations
AVOIDDO NOT EAT MORE THAN THE AMOUNT LISTED BELOW:
DO NOT EAT Largemouth, smallmouth or spotted bass; or Sacramento pikeminnow
1 MEAL A MONTH All other fish or crayfish species*
Women of childbearing age, pregnant or breastfeeding women, and children 17 years and under:
SAFE EATING GUIDELINESSAFE EATING GUIDELINESFOR FISH CONSUMPTION FROMFOR FISH CONSUMPTION FROMTHE LOWER COSUMNES RIVERTHE LOWER COSUMNES RIVER
*Asiatic clams may be eaten up to 3 meals a week
SAFE EATING GUIDELINESSAFE EATING GUIDELINESFOR FISH CONSUMPTION FROMFOR FISH CONSUMPTION FROMTHE LOWER COSUMNES RIVERTHE LOWER COSUMNES RIVER
Women beyond childbearing age and men:
ENJOYUP TO 2 MEALS A WEEK
Bluegill or redear sunfish or Asiatic clams*
EAT IN MODERATIONNO MORE THAN ONE MEAL A WEEK
Crayfish or Sacramento sucker or white catfish
AVOIDNO MORE THAN ONE MEAL A MONTH
Largemouth, smallmouth or spotted bass; or Sacramento pikeminnow
*Asiatic clams may be eaten up to 3 times a week
EAT IN MODERATIONNO MORE THAN 1 MEAL A WEEK
Crayfish*
AVOIDNO MORE THAN 1 MEAL A MONTH
All fish species
Women of childbearing age, pregnant or breastfeeding women, and children 17 years and under:
SAFE EATING GUIDELINESSAFE EATING GUIDELINESFOR FISH CONSUMPTION FROMFOR FISH CONSUMPTION FROMTHE LOWER MOKELUMNE RIVERTHE LOWER MOKELUMNE RIVER
*Asiatic clams may be eaten up to 3 times a week
SAFE EATING GUIDELINESSAFE EATING GUIDELINESFOR FISH CONSUMPTION FROMFOR FISH CONSUMPTION FROMTHE LOWER MOKELUMNE RIVERTHE LOWER MOKELUMNE RIVER
Women beyond childbearing age and men:
ENJOYUP TO 2 MEALS A WEEK
Crayfish or bluegill or Sacramento sucker or white catfish or Asiatic clams*
AVOIDNO MORE THAN ONE MEAL A MONTH
Largemouth, smallmouth or spotted bass; or Sacramento pikeminnow
*Asiatic clams may be eaten up to 3 times a week
6-13-06 Fish Mercury Project
Follow the Striped Bass Advisory for Delta Water Bodies
Women of childbearing age and children 17 years and younger:
No more than one meal per month and none over
27 inches
Women beyond childbearing age and men:
No more than two meals per month and none over 35 inches
DELTA STRIPED BASS ADVISORYDELTA STRIPED BASS ADVISORY
6-13-06 Fish Mercury Project
General Information Related General Information Related to Recommendationsto Recommendations
Larger fish more contaminated
6-13-06 Fish Mercury Project
Commercial Fish Commercial Fish InformationInformation
Commercial informationAHA-Federal recommendation
6-13-06 Fish Mercury Project
Untested Water BodiesUntested Water Bodies
6-13-06 Fish Mercury Project
Questions on 2005 Questions on 2005 Activities?Activities?
6-13-06 Fish Mercury Project
Plans for 2006Plans 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
6-13-06 Fish Mercury Project
Plans for 2006 (cont.)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
6-13-06 Fish Mercury Project
Plans for 2006 (cont.)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
6-13-06 Fish Mercury Project
Plans for 2006 (cont.)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.- O’Neill Forebay
Other water bodies- California Aqueduct
6-13-06 Fish Mercury Project
6-13-06 Fish Mercury Project
Comments/DiscussionComments/Discussion