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Tier 1 Environmental Screening Levels Surfer <br /> (Screening Levels For Specific Environmental Concerns) SFBRWQCB <br /> SurfeETHYLBENZENE Octo version: <br /> October 2005 <br /> erres ria <br /> Ecological Indoor Air Vapor Emissions <br /> No ESLS exceeded. Impacts (Ug/m3) To Indoor Air <br /> 5.8E+02 3.9E+02 <br /> Gross Human Direct <br /> Contamination Health Exposure <br /> 4.0E+02 IM acts 4.0E+02 <br /> .......................................... ................. <br /> Soil (mg/kg) Soil Gas_(ugJm3) <br /> Input Site Concentration Lowest Soil ESL: 3.3E+00 - —1.2E+06'- <br /> Soil(mg/kg): 1.2 Leaching <br /> 3.3E+00 <br /> .......................................... ......................................... <br /> Impacts toVapor Emissions <br /> Groundwater(ug/L) <br /> Aquatic Habitats To Indoor Air <br /> 2.9E+02 Lowest GW ESL: 3.0E+01 1.7E+05 <br /> Gross Human Drinking Water <br /> Contamination Aealth (toxicity) <br /> 3.0E+0l Impacts 7.0E+02 <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 1ESL Surfer Report,Glossary and Chemical Summary. <br /> Tier 1 ESL Surfer <br /> Version: October 2005 ESL Surfer-Detailed ESLs <br />