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o <br /> Tier 1 ENVIRONMENTAL SCREENING LEVELS SEARCH <br /> SUMMARY FORM <br /> .� San Francisco Bay Regional Water Quality Control Board <br /> California Environmental Protection Agency <br /> (Referenced ESLs:February 2005) <br /> Site Name: Sari Joaquin County Courthouse <br /> Site Address: 222 E.Weber Ave.;Stockton <br /> Site ID Number: T0607700470 <br /> Date of ESL Search: <br /> Selected Site Scenario <br /> Land Use: Commercial or <br /> Industrial <br /> Depth to Impacted Soil: Shallow Soil <br /> Groundwater Utility: Drinking Water <br /> Resource <br /> Selected Chemical of Concern: BENZENE <br /> .r <br /> input Site Concentrations: <br /> Soil(mg/kg): 2.2 <br /> Groundwater(ug/L): 2 <br /> Tier 1 ESL, <br /> Exceeded? <br /> �.. Soil Tier 1 ESLS: Units ESL Referenced Table <br /> Direct Exposure: mg/kg 3.8E-01 Yes <br /> Vapor Emissions To Indoor Air: mg/kg 5.1E-01 Yes <br /> Terrestrial Ecological Impacts: mg/kg 2.5E+01 No Table A-2: <br /> Gross Contamination: mg/kg 8.7E+02 No <br /> Leaching: mg/kg 4.4E-02 Yes <br /> �-r <br /> Lowest Soil ESL: mg/kg 4.4E-02 <br /> Groundwater Tier 1 ESLs: Units ESL Referenced Table <br /> Drinking Water(Toxicity): ug/L 1.0E+00 Yes <br /> Vapor Emissions To Indoor Air: ug/L 1.8E+03 No Table F-1 a <br /> Impacts to Aquatic Habitats: ug/L 4.6E+01 No <br /> .... Gross Contamination: ug/L. 1.7E+02 No <br /> Lowest Groundwater ESL: ug/L 1.0E+00 <br /> Other Tier I ESLs: Units ESL Referenced Table <br /> Indoor Air: ug/m3 1.4E-01 Table E-3 <br /> Shallow Soil Gas: ug/m3 2.9E+02 Table E-2 <br /> Reference: <br /> Screening For Environmental Concerns at Sites With Contaminated Soil and Groundwater (February 2005), San <br /> Francisco Bay Regional Water Quality Control Board, California EPA, <br /> http://www.waterboards.ca.gov/sanfranciscobay/esl.htm <br /> Source Tables: Referenced Table from Appendix 1 of ESL document. <br /> Tier 1 ESL Surfer <br /> Version: October 2005 ESL Surfer-Surfer Report <br />