6-13-06Fish Mercury Project Office of Environmental Health Hazard Assessment California...

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


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.


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


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.


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


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


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


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


SAFE EATING GUIDELINESSAFE EATING GUIDELINESFOR FISH CONSUMPTION FROMFOR FISH CONSUMPTION FROMTHE LOWER MOKELUMNE RIVERTHE LOWER MOKELUMNE RIVER


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



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


No more than two meals per month and none over 35 inches

DELTA STRIPED BASS ADVISORYDELTA STRIPED BASS ADVISORY


General Information Related General Information Related to Recommendationsto Recommendations

Larger fish more contaminated


Commercial Fish Commercial Fish InformationInformation

Commercial informationAHA-Federal recommendation


Untested Water BodiesUntested Water Bodies


Questions on 2005 Questions on 2005 Activities?Activities?


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


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


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


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


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6-13-06Fish Mercury Project Office of Environmental Health Hazard Assessment California...

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