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Tier 1 Environmental Screening Levels Surfer - <br /> (Screening Levels For Specific Environmental Concerns) SF7BRW s <br /> METHYL TERT BUTYL ETHER Surfer Version: <br /> October 2005 <br /> erres On <br /> ESLs Exceeded ('X'). Ecological Vapor Emissions <br /> Further evaluation of identified Impacts To Indoor Air <br /> concerns recommended. 5.6E+00 <br /> ross Human Direct <br /> Contamination Health Exposure <br /> 1.0E+03 Im acts 2.5E+03 <br /> .................................... ................ <br /> Soil (mg/kg) SOII Gasx(ug/m3) <br /> Input Site Concentration Lowest Soil ESL: 2.3E-02 <br /> Soil(mg/kg): 1.4 )( Leaching <br /> 2.3E-02 <br /> .......................................... ......................................... <br /> Impacts toGroundwater( g/ <br /> uL) Vapor Emissions <br /> Aquatic Habitats - - - To Indoor Air <br /> 8.0E+03 - Lowest GW ESL: 5.0E+00 8.0E+04 <br /> Gross Human Drinking Water <br /> Contamination Health (toxicity) <br /> 5.0E+00 Impacts 1.3E+01 <br /> Reference: <br /> Screening For Environmental Concerns at Sites With Contaminated Soil and <br /> Groundwater (February 2005), San Francisco Bay Regional Water Quality Control <br /> Board, California EPA,http://www.waterboards.ca.gov/sanfranciscobay/esl.htm <br /> Site Scenarios: Site scenario options based on scenarios used to develop ESL lookup tables. <br /> See also attached Tier TESL Surfer Report, Glossary and Chemical Summary. <br /> Tier 1 ESL Surfer <br /> Version:October 2005 ESL Surfer-Detailed ESLs <br />