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VtiCurtis &Tompkins Ltd <br /> LABORATORY NUMBER: 117519 DATE SAMPLED: 09/15/94 <br /> CLIENT: ENVIRONMENTAL SCIENCE & ENGINEERING DATE RECEIVED: 09/16/94 <br /> PROJECT ID: 6-92-5400 DATE ANALYZED: 09/28/94 <br /> LOCATION: CECCHINI DATE REPORTED: 10/11/94 <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 RECOVERIES <br /> (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) TFT BB <br /> 117519-001 UST-1 HD 1 2 ND 3.0 0.5 73% 97% <br /> 117519-002 TRIP ND ND ND ND 0 5 106% 102% <br /> 117519-003 DUP ND 1 4 ND 3.6 0 5 81% 99% <br /> i� 117519-METHOD BLANK ND ND ND ND 0 5 97% 100% <br /> TFT = Trifluorotoluene (Limits: 58-130) <br /> BB = Bromobenzene (Limits: 62-131) <br /> ND = Not detected at or above reporting limit. <br /> Reporting Limit applies to all analytes. <br /> QA/QC SUMMARY: BS BSD <br /> RPD, % 2 (Limit: <25 ) <br /> RECOVERY, % 101-�(Limits-x_75-125) -= <br />