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INMAL RELEASE DDJC Tracy <br /> TABLE C4.Estimated Exposure <br /> Ingestion of Stormwater Lagoon Fish <br /> Estimated Fish Tissue Concentration Noncancer Effects Cancer Effects <br /> Contaminant Estimated <br /> Maximum Fish Chronic Estimated <br /> Sediment BAF:' Tissue Estimated Health Guideline < Exposure Lifetime <br /> Conc. Cone. ExpostueDose` Oral Dose Cancer <br /> (ppm) (Ppm) (mg!Wday) (mg/kg/day) (mglkg/day) Risk` <br /> I <br /> Lead 0.193 0.3 0.0579 0.000005 not available 0.000002 not <br /> applicable <br /> Mercury 0.22 1 0.22 0.00002 not available 0.000008 not <br /> applicable <br /> Pyrene 1.8 0.008 0.015 0.000001 0.03 (RfD) 0.0000005 1 4 x 10 <br /> PCBs 0.493 4 1.836 0.0002 0.00002(MRL 0.00007 1 x 10' <br /> DDT 0.158 1.4 0.221 0.00002 0.0005 (MRL) 0.000008 3 x 10` <br /> DDE 0.815 0.7 0.571 0.00005 0.0005 0.00002 7 x 10` <br /> (MRL-DDT) <br /> DDD 2.3 0.7 1.6 0.0001 0.0005 0.00006 2 x 10' <br /> (MRL-DDT) <br /> Chlordane 0.093 1 0.093 0.000008 0.00006(RfD) 0.000004 t5. x 10' <br /> Dieldrin 0.205 0.5 0.103 0.000009 0.00005 0.000004 6 x 10" <br /> (MRL/RfD) <br /> References:Black et al. 1981;Kraus, 1989;AQUIRE, 1995. <br /> Estimated Exposure Dose = Conc. x IR x EF x ED <br /> BW xAT <br /> Conc. = Maximum contaminant concentration estimated in lagoon fish(ppm) <br /> IR = Ingestion rate:0.0065 kg/day <br /> EF = Exposure frequency,or the number of exposure events(7 days x 50 weeks or 350 days per year) <br /> ED = Exposure duration,or the duration over which exposure occurs=30 years <br /> BW = Body weight(kg):70 kg(154 pounds) <br /> AT = Average time or the time over which cumulative exposures are averaged(noncancer-30 years,cancer-70 years x <br /> 365 days) <br /> 'Lifetime Cancer Risk=Estimated Exposure Dose(Cancer)x Cancer Potency Factor <br /> Key: ppm=parts per million;mg/kg/day=milligrams contaminant per kilogram body weight per day ,MRL=Minimal <br /> Risk Level;Rfl)=EPA's Reference Dose. <br /> C-11 <br />