Great Lakes Fish Contaminants by kyb14053

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									Great Lakes Fish
 Contaminants

   Sandy Hellman
             Contaminants that Cause
  PCBs
             Fish Advisories in Canada
 Mercury       and the United States
Toxaphene
Chlordane
  Dioxin



                 PCBs
                 Dioxin
                                   PCBs
               Chlordane
                                  Mercury
   PCBs         Mercury
                                   Mirex
  Mercury      Toxaphene
                                 Toxaphene
 Chlordane
                                   Dioxin
   Dioxin


                        PCBs
                        Dioxin
                       Mercury
  Fish Contaminants Trend Data

• Great Lakes National Program Office, USEPA,
  Great Lakes Fish Monitoring Program, USGS BRD
• Lake Trout (600-700mm),Walleye in Lake Erie
  (400-500 mm)
• 50 fish collected from each site
• Samples are composites of five whole fish
• Extensive quality control to guarantee
  comparability over time
• Source of data through 1990 – DeVault et. al.
  Contaminant Trends in Lake Trout and Walleye
  From the Laurentian Great Lakes. 1996. J. Great
  Lakes Research
• Source of data post 1990 - GLNPO
    Fish Consumption Data
• Great Lakes National Program Office,
  USEPA, Great Lakes Fish Monitoring
  Program, USGS BRD, Great Lakes States
• Coho Salmon (3 years old)
• Samples are composites of 5 skin-on
  fillets
• 1998 data for each lake compared to
  monthly fish consumption limits for
  cancer and noncancer health endpoints
  Fish Consumption Limits
• Guidance for Assessing Chemical
  Contaminant Data for Use in Fish
  Advisories. Volume 2: Risk Assessment
  and Fish Consumption Limits, Third
  Edition.
• Values are fish tissue concentrations that
  allow for unrestricted monthly
  consumption (>16 meals).
• Values are more conservative than what
  Great Lakes States use because they
  don’t account for cooking and cleaning
  and they use risk level of 1in 100,000
PCBs in Great Lakes Top Predator Whole Fish*
            25
                                        *Lake Trout (Walleye in Lake Erie)

            20
                             L. Michigan
PCB (ppm)




            15


            10

                                            L. Ontario
            5                L. Huron
                   L. Erie

                 L. Superior
            0
             1972      1976     1980    1984    1988     1992   1996    2000
              Fish Contaminants in Great Lakes Coho Salmon
                          Skin-On Fillets in 1998
             1.2

              1
PCB (ug/g)




             0.8
                   Great Lakes Protocol
                   Health Protection Value
             0.6

             0.4

             0.2

              0
                   Superior   Michigan Huron   Ontario   Erie
                  DDT in Great Lakes Top Predator Fish*
             20
             18                                                                                L. Michigan
             16                                                                                L. Ontario
             14
DDT (ug/g)




                                                                                               L. Huron
             12
             10                                                                                L. Erie
              8                                                                                L. Superior
              6
              4
              2
              0
                  1970

                         1972

                                1974

                                       1976

                                              1978

                                                     1980

                                                            1982

                                                                   1984

                                                                          1986

                                                                                 1988

                                                                                        1990

                                                                                               1992

                                                                                                      1994

                                                                                                             1996

                                                                                                                    1998
      *Lake Trout (Walleye in L. Erie)
                        DDT in Great Lakes Coho Salmon
                             Skin-On Fillets in 1998
             0.5


             0.4   Unrestricted consumption
                          limit value *
DDT (ug/g)




             0.3


             0.2


             0.1


              0
                   Superior   Michigan   Huron   Ontario   Erie

   * Noncancer Health Endpoint
                        Dieldrin in Great Lakes Top Predator Fish*
                  0.7
                                                                                                      Lake Michigan
                  0.6                                                                                 Lake Erie
                                                                                                      Lake Huron
Dieldrin (ug/g)




                  0.5                                                                                 Lake Superior
                                                                                                      Lake Ontario
                  0.4

                  0.3

                  0.2

                  0.1

                   0
                        1970

                               1972

                                      1974

                                             1976

                                                    1978

                                                           1980

                                                                  1982

                                                                          1984

                                                                                 1986

                                                                                        1988

                                                                                               1990

                                                                                                        1992

                                                                                                               1994

                                                                                                                      1996

                                                                                                                             1998
    *Lake Trout (Walleye in L. Erie)                                     Year
                  Dieldrin in Great Lakes Coho Salmon
                         Skin-On Fillets in 1998
                  .006
                  .005                   Unrestricted consumption
Dieldrin (ug/g)




                                                limit value**
                  .004
                  .003
                  .002
                  .001
                     0
                         Superior Michigan   Huron   Ontario   Erie

**Cancer Health Endpoint
                Mirex in Lake Ontario Whole Lake Trout

              1.4
              1.2
Mirex (ppm)




              1.0
              0.8
              0.6
              0.4
              0.2
              0.0
                           1980


                                         1984




                                                1992
                                                       1994
                                                              1996
                    1978


                                  1982




                                                                     1998
                  Mirex in Lake Ontario Coho Salmon
                           Skin-on Fillets
               0.08
Mirex (ug/g)




               0.06

               0.04

               0.02

                 0
      Unrestricted consumption    1998
       limit value - Noncancer
           Health Endpoint
Toxaphene in Great Lakes Top Predator Fish*


                   4
Toxaphene (ug/g)




                   3                                                    Superior
                                                                        Michigan
                   2
                                                                        Huron
                                                                        Ontario
                   1
                                                                        Erie

                   0
                       1986




                                                          1996

                                                                 1998
                                                   1994
                              1988

                                     1990

                                            1992
                             Toxaphene in Great Lakes Coho
                             Salmon Skin-On Fillets in 1998

                           Unrestricted Consumption
                                  Limit Value*
 Toxaphene (ug/g)




                    .073




                      0
                           Superior Michigan      Huron     Ontario        Erie
*Noncancer Health Endpoint                      Unrestricted Consumption
**Cancer Health Endpoint                               Limit Value**
                            Hexachlorobenzene in Great Lakes Coho Salmon
                                        Skin-On Fillets in 1998
                            .006
 Hexachlorobenzene (ug/g)




                                   Unrestricted Consumption
                                          Limit Value**
                            .004



                            .002



                               0
                                   Superior Michigan Huron    Ontario   Erie

**Cancer Health Endpoint
                                  Octachlorostyrene in Great Lakes Coho Salmon
                                              Skin-On Fillets in 1998
Octachlorostyrene (ug/g)




                           .002




                              0
                                  Superior   Michigan Huron    Ontario    Erie

								
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