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Table 2 <br /> COPC Action Levels and Data Quality Indicator Goals for Groundwater <br /> EI Concilio No. 1 <br /> 1501 Airport Way,Stockton,San Joaquin County,CA <br /> Targeted Brownfields Assessment <br /> TDD: TO1409-09-11-0001 002693.1401.01BR <br /> Industrial Screening Levels` <br /> EPA Region <br /> 9 Precision' <br /> ESL Laboratory EPA CLP (RPD for <br /> Groundwater Reporting Reporting Accuracy' MS/MSD& Percent <br /> Analyte (pg/L) MCL(pg/L) Limits Limits (%Recovery) duplicates) Complete' <br /> PH 100 50 NA 70-130 25 90 <br /> TPH-d 100 250 NA 70-130 25 90 <br /> TPH-mo 100 1000 NA 70-130 25 90 <br /> Benzene 1.0 5.0 0.5 0.5 70-130 25 90 <br /> Toluene 40 1000 0.5 0.5 70-130 25 90 <br /> Eth (benzene 30 700 0.5 0.5 70-130 25 90 <br /> Xylenes 20 10000 0.5 0.5 70-130 25 90 <br /> MTBE 5.0 -- 2.0 0.5 70-130 25 90 <br /> Notes: <br /> "Screening levels indicated in BOLD are the selected project screening levels <br /> pg/L-micrograms per liter <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 /> MCL-Maximum Contaminant 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 <br /> source <br /> RPD-relative percent difference <br /> MS/MSD-matrix spike/matrix spike duplicate <br /> TPH-g-Total Petroleum Hydrocarbons as gasoline <br /> TPH-d-Total Petroleum Hydrocarbons as diesel <br /> TPH-mo-Total Petroleum Hydrocarbons as motor oil <br /> MTBE-methyl tertiary butyl ether <br /> Page 2 of 4 ecology&environment, Inc.2010 <br />