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C H RO MALAB, INC. Submission #: 2000-12-0334 r` <br /> Environmental Services(SDB) <br /> To: P.G.& E-SF Environmental Support& Services Test Method: ; 8020 . <br /> Attn: Gary Pforr Prep Method: 5030 <br /> Batch QC Report <br /> Gas/BTEX <br /> i <br /> Laboratory Control Spike(LCS/LCSD) Soil QC Batch#2000112118-01.04 <br /> LCS: 2000/12/18-01.04-004 Extracted: 12/18/2000 06:35 Analyzed 12/18/2000 06:35 <br /> LCSD: 2000/12/18-01.04-005 Extracted: 12/18/2000 07:02 Analyzed 12/18/2000 07:02 <br /> Compound Conc. [mg/Kg] Exp.Conc. [mg/Kg] Recovery[%] RPD Ctrl. Limits[%] Flags 1� <br /> LCS LCSD LCS LCSD LCS LCSD [%] Recovery RPD LCS LCSD <br /> Benzene 0.101 0.0973 0.1000 0.1000 101.0 97.3 3.7 77-123 35 <br /> Toluene 0.0940 0.0908 0.1000 0.1000 94.0 90.8 3.5 78-122 35 I� <br /> Ethyl benzene 0.0946. 0.0914 0.1000 0.1000 94.6 91.4 3.4 70-130 35 ` <br /> Xylene(s) 0.289 0.278 0.300 0.300 96.3 92.7 3.8 75-125 35 I <br /> Surrogate(s) � <br /> Triffluorotoluene 502 478 500 500 100.4 95.6 53-125 <br /> I <br /> 4 <br /> I <br /> 4 <br /> s <br /> _f <br /> v <br /> I <br /> U <br /> 1220 Quarry Lane*Pleasanton,CA 94566-4756 <br /> Telephone:(925)484-1919.*Facsimile:(925)484-1096 <br /> Printed on: 12/19/2000 11:51 Page 10 of 13 <br />