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TS ent_B?/: RWOCB; 2553439; Jul-13-00 11 :21AM; Page 3 I <br /> U <br /> Water Quality Coale Database California Regional Water Quality Control Board,Central Valley Region <br /> Water Quality Numerical Limits for <br /> 1,2-Dichloroethane <br /> Concentration <br /> (uglL unless noted) <br /> California Ocean Plan -- Numerical Water Quality Objectives (State Water Board) <br /> I, Human Health Protection (3o-dav average fish consumption only) 130 # <br /> Marine Aquatic Life Protection <br /> 6-month Median <br /> 30day Average _,. _ - - <br /> 1-day Average <br /> Daily Maximum <br /> r Instantaneous Maximum <br /> 1 National Ambient Water Quality Criteria (U.S. Environmental Protection Agency) <br /> Human Health & Welfare Protection <br /> Public Health Effects (other than cancer risk) <br /> Water and Fish Consumption _. <br /> Fish Consumption Only <br /> One-in-a-Million Incremental Cancer Risk Estimate <br /> i Water and Fish Consumption 0.38 <br /> -..... <br /> Fish Consumption Only 99 <br /> Taste & Odor or Welfare <br /> Freshwater Aquatic Life Protection <br /> Recommended Criteria <br /> Continuous Concentration (4-dav Averaqe) .. <br /> 24-hour Average <br /> Maximum Concentraiton_(1-hour Average) <br /> Maximum (instantaneous) <br /> Toxicity Information (Lowest Observed Effect Level) <br /> Acute 118,000 <br /> Chronic 2-0-'-0-00 <br /> Other <br /> Saltwater Aquatic Life Protection <br /> Recommended Criteria <br /> Continuous Concentration (4-day Average_. <br /> 24-hour Average , - <br /> Maximum Concentraiton 1-hour Average) - <br /> Maximum Instantaneous _ - <br /> Toxicity Information (Lowest Observed Effect Level) <br /> Acute 113,000 <br /> Chronic <br /> Other. <br /> Notes: —' ' <br /> ' Assumes 70 kg body weight, 2 liters/day water consumption, and 20% relative source contribution from <br /> drinking water. An additional uncertainty factor of 10 is used for Class C carcinogens. <br /> •• Assumes 70 kg body weight and 2 liters/day water consumption. <br /> Regulatory dose level divided by 2 liters/day average consumption. Based on 10�cancer risk unless noted. <br /> g Carcinogen. <br /> R Reproductive toxin. <br /> Page 2 of 2 Numbers and letters in parentheses indicate footnotes. June 2000 <br />