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4 <br /> C H ROMALAB, INC. Submission #: 2000-03-0351 <br /> Environmental Services(SDB) <br /> ^� To: Wright Environmental Services Inc Test Method: 8020 <br /> 8015M <br /> Attn: John Lynch Prep Method: 5030 <br /> r <br /> Batch QC Report <br /> f <br /> Gas/BTEX <br /> e <br /> Laboratory Control Spike(LCS/LCSD) Water CIC Batch#2000/03/31-01.01 <br /> LCS: 2000/03/31-01.01-002 Extracted: 03/31/200012:18 Analyzed 03/31/200012:18 <br /> LCSD: 2000/03/31-01.01-003 Extracted: 03/31/200011:43 Analyzed 03/31/200011:43 <br /> f <br />! Compound Conc. [ug/L] Exp.Conc. [ug/L] Recovery[%] RPD Ctrl.Limits[%] Flags <br /> LCS LCSD LCS LCSD LCS LCSD [%] Recovery I RPD LCS LCSD <br /> Gasoline 487 474 500 500 97.4 94.81 2.7 75-125 20 <br /> a <br /> Benzene 91.3 96.7 100.0 100.0 91.3 96.7 5.7 77-123 20 <br /> Toluene 85.8 89.9 100.0 100.0 85.8 89.9 4.7 78-122 20 <br /> Ethyl benzene 90.7 95.8 100.0 100.0 90.7 95.8 5.5 70-130 20 <br /> Xylene(s) 271 285 300 300 90.3 95.0 5.1 75-125 20 <br /> Surrogate(s) <br /> i <br /> Trifluorotoluene 436 456 500 500 87.2 91.2 58-124 <br /> 4-Bromofluorobenzene-FI 437 431 500 500 87.4 86.2 50-150 <br /> e , <br /> B <br /> Q <br /> 4 <br /> [ <br /> N <br /> I <br /> 1 1 <br /> r <br /> i <br /> i <br /> i <br /> a <br /> I <br /> p <br /> 3 <br /> 9 <br /> i <br /> 3 <br /> a <br /> 9 <br /> a <br /> i <br />' 4 <br /> E <br /> t <br /> 1 1220 Quarry LanePleasanton,CA 94566-4756 <br /> Telephone:(925)484-1919'Facsimile:(925)484-1096 <br /> Printed on:03/31/2000 14:58 Page 15 of 17 <br /> i <br /> 1 e <br />