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Table 2 <br /> COPC Action Levels and Data Quality Indicator Goals for Soil Gas <br /> EI Concilio No.2 <br /> 1116 East 1st Street,Stockton,San Joaquin County,CA <br /> Targeted Brownfields Assessment <br /> TDD: TO1509-09-11-0001 002693.1501.016R <br /> Industrial Screening Levels Im3 <br /> Precision' <br /> CHHSL-Shallow ESL-Shallow Soil EPA Region 9 (RPD for <br /> Soil Gas Gas Screening Laboratory EPA CLP Accuracy' MSIMSD& Percent <br /> Analyte Screening Level Level Reporting Limits Reporting Limits (%Recovery) duplicates) Complete' <br /> Benzene 122 280 50,000 NA 70-130 25 1 90 <br /> Toluene 378,000 180,000 50,000 NA 70-130 25 90 <br /> Eth benzene 3,300 1.0 NA 70-130 25 90 <br /> lanes 887 000 58 000 1.0 NA 70-130 25 90 <br /> MTBE 13,400 31,000 1.0 NA 70-130 25 90 <br /> Notes: <br /> 'Screening levels indicated in BOLD are the selected project screening levels <br /> pg/m3=micrograms per cubic meter <br /> '-Accuract,Precision,and Percent Complete are estimated but will be defined when a laboratory is <br /> selected. <br /> COPC-Contaminant of potential concern <br /> CHHSL-California Human Health Screening Level,-Califomia EPA,January 2005 <br /> RSL-Regional Screening Levels,U.S.EPA Region 9,May 2010 <br /> ESL-Environmental Screening Level,CA Regional Water Quality Control Board,May 2008,where groundwater is a drinking water source <br /> RPD-relative percent difference <br /> MS/MSD-matrix spike/matrix spike duplicate <br /> MTBE-methyl tertiary butyl ether <br /> Page 2 of 7 ecology&environment,Inc.2010 <br />