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cbCurtis &Tompkins Ltd <br />' LABORATORY NUMBER: 103731 DATE RECEIVED: 05 /07/91 <br /> CLIENT: ENVIRONMENTAL SCIENCE & ENGINEERING DATE ANALYZED: 05 / 08 /91 <br />' PROJECT ID: 6 - 90 -5030 DATE REPORTED: 05 / 13 /91 <br /> LOCATION: AT&T, LODI <br /> Benzene , Toluene , Ethyl Benzene , Xylenes by EPA 8020 <br /> Extraction by EPA 5030 Purge and Trap <br /> iLAB ID CLIENT ID BENZENE TOLUENE ETHYL TOTAL REPORTING <br /> BENZENE XYLENES LIMIT * <br /> ( ug/L) ( ug /L) (ug/L) (ug/L) ( ug /L) <br /> - - - - - - - - - - - • - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - <br /> 103731 - 1 Nj& - 1 ND ND ND ND 0 . 5 <br />' 103731 - 2 MW-2 ND ND ND ND 0 . 5 <br /> 103731 - 3 MW-3 ND ND ND ND 0. 5 <br /> 103731 - 4 TRIP ND ND ND ND 0. 5 <br /> 1 <br /> 1 <br /> ND = Not detected at or above reporting limit . <br /> * Reporting Limit applies to all analytes . <br /> QA/QC SUMMARY <br /> RPD, % - 4 <br /> RECOVERY_ 9'097_�_�.......___.__ <br />