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a <br /> ` Submission #: 2000-03.0351 <br /> C H ROMALAB, INC. <br /> Environmental Services(SDB) <br /> I� <br /> To: Wright Environmental Services Inc Test Method: 8020 <br /> 8015M <br /> Attn: John Lynch Prep Method: 5030 <br /> Batch QC Report <br /> Gas/BTEX p <br /> ii <br /> Laboratory Control Spike(LCS/LCSD) Water QC Batch#2000/03/30-02.01 <br /> LCS: 2000/03/30-02.01-002 Extracted: 03/30/200012:27 Analyzed 03/30/200012:27 <br /> LCSD: 2000/03/30-02.01-003 Extracted: 03/30/200013:02 Analyzed 03/30/200013:02 <br /> Compound Conc. [ug/L] Exp.Conc. [ug/L] Recovery[%] RPD Ctrl.Limits[%] Flags <br /> LCS LCSD LCS LCSD LCS LCSD [%] Recovery RPD LCS LCSD <br /> Gasoline 478 492 500 500 95.6 98.4 2.9 75-125 20 <br /> I <br /> Benzene 98.5 98.0 .100.0 100.0 98.5 98.0 0.5 77-123 20 <br /> Toluene 92.1 92.0 100.0 100.0 92.1 92.0 0.1 78-122 20 <br /> 8 <br /> Ethyl benzene 97.4 98.4 100.0 100.0 97.4 98.4 1.0 70-130 20 <br /> Xylene(s) 289 292 300 300 96.3 97.3 1.0 75-125 20 <br /> Surrogates) <br /> Trifluorotoluene 477 469 500 500 95.4 93.8 58-124 <br /> 4-Bromofluorobenzene-FI 436 448 I 500 500 87.2 89.61 50-150 <br /> f! <br /> i <br /> s <br /> 1 <br /> 1 <br /> i <br /> ' 1 <br /> 1 <br /> dy <br /> q <br /> R <br /> d <br /> a <br /> 4 <br /> r <br /> 5I <br /> I <br /> 4 <br /> 1220 Quarry Lane`Pleasanton,CA 94566-4756 <br /> I g <br /> Telephone:(925)484-1919 Facsimile:(925)484-1096 <br /> Printed on:03/31/2000 14:58 Page 14 of 17 <br /> F <br /> F. <br />