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C H RO MALAB, INC. Submission #: 2000-12-0334 f, <br /> Environmental Services(SDB) <br /> To: P.G.& E-SF Environmental Support& Services Test Method: 8015M <br /> 8020 <br /> Attn: Gary Pforr Prep Method: 5030 <br /> Batch QC Report <br /> Gas/BTEX <br /> Laboratory Control Spike (LCSILCSD) Soil QC Batch#2000112119-01.04 <br /> LCS: 2000112119-01.04-002 Extracted: 12/19/2000 06:55 Analyzed 12/19/2000 06:55 <br /> LCSD: 2000/12/19-01.04-003 Extracted: 12119/200010:47 Analyzed 12/191200010:47 <br /> Compound Conc. [mg/Kg] Exp.Conc. [mg/Kg] Recovery(%j RPD Ctrl. Limits[%j Flags <br /> LCS LCSD LCS LCSD LCS LCSD [%] Recovery RPD LCS . LCSD <br /> Gasoline 0.423 0.430 0.500 0.500 84.6 86.0 1.6 75-125 35 <br /> Benzene 0.101 0.0884 0.1000 0.1000 101.0 88.4 13.3 77-123 35 <br /> Toluene 0.0943 0.0823 0.1000 0.1000 94.3 82.3 13.6 78-122 35 <br /> Ethyl benzene 0.0944 0.0810 0.1000 0.1000 94.4 81.0 15.3 70-130 35 <br /> Xylene(s) 0.289 0.243 0.300 0.300 96.3 81.0 17.3 75-125 35 <br /> Surrogate(s) _ <br /> Trifluorotoluene 498 437 500 500 99.6 87.4 53-125 <br /> 4-Bromofluorobenzene-FI 561 572 500 500 112.2 114.4 58-124 <br /> I <br /> I <br /> i <br /> I <br /> i <br /> i� <br /> i� <br /> 1220 Quarry Lane'Pleasanton,CA 94566-4756 <br /> Telephone:(925)484-1919'Facsimile:(925)484-1096 <br /> Printed on:12/19/20QD 11:51 Page 12 of 13 <br />