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1 <br /> cbCurtis &Tompkins Ltd <br /> LABORATORY NUMBER: 110988 DATE SAMPLED: 5/20/93 <br /> CLIENT: ENVIRONMENTAL SCIENCE & ENGINEERING DATE RECEIVED: 5/21/93 <br /> PROJECT ID: 6-92-5009 DATE ANALYZED: 5/27/93 <br /> LOCATION: AT&T -- LODI DATE REPORTED: 5/28/93 <br /> Benzene, Toluene, Ethyl Benzene, Xylenes by EPA 8020 <br /> Extraction by EPA 5030 Purge and Trap <br />' LAB ID CLIENT ID BENZENE TOLUENE ETHYL TOTAL REPORTING SURROGATE <br /> BENZENE XYLENES LIMIT RECOVERY <br /> (ug/Kg) (ug/Kg) 09/0) (ug/Kg) (ug/Kg) (Bromobenzene) <br /> 110988-007 Mu-4 @ 35P NO ND ND ND 5 99 % <br /> 110988-008 Mu-4 00 40' NO ND ND ND 5 100 % <br />' 110988-012 SB-A 8 20' ND ND ND ND 5 100 % <br /> 110988-013 SB-A a 251 ND ND ND ND 5 99 % <br /> METHOD BLANK N/A RD NO ND ND 5 101 % <br /> 1 <br /> BFB = Bromofluorobenzene (Limits: 75-125) <br />' ND = Not detected at or above reporting limit. <br /> Reporting Limit applies to all analytes. <br /> 1 <br /> QA/QC SUMMARY: LABORATORY CHECK SAMPLE <br /> RECOVERY, % 110 <br /> 1 <br />