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cbCurtis &Tompkins Ltd <br /> LABORATORY NUMBER: 112451 DATE SAMPLED: 09/23/93 <br /> CLIENT: ENVIRONMENTAL SCIENCE & ENGINEERING DATE RECEIVED: 09/24/93 <br /> PROJECT ID: 6-92-5009 DATE ANALYZED: 09/27/93 <br /> LOCATION: AT&T - LODI DATE REPORTED: 10/02/93 <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 RECOVERIES <br /> (U9/L) (ug/L) (ug/L) (ug/L) (Ug/L) TFT BFB <br /> 112451-001 MW-1 ND ND ND ND 0.5 98 % 80 % <br /> 112451-002 MW-2 ND ND ND NO 0.5 97 % 80 % <br /> 112451-003 MW-3 ND ND ND ND 0.5 96 % 79 % <br /> 112451-004 MW-4 ND ND ND ND 0.5 97 % 78 % <br /> 112451-005 DUP ND NO ND ND 0.5 97 % 80 % <br /> METHOD BLANK N/A ND NO ND ND 0 5 100 % 83 % <br /> TFT = Trifluorotoluene (Limits: 58-130) <br /> BFB = Bromofluorobenzene (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, % C1 <br /> RECOVERY, % 101 <br />