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C H RO MALAB, INC. Submission #: 2000-11-0543 <br /> Environmental Services(SD B) <br /> To: San Joaquin Company, Inc. Test Method: 8015M <br /> 8020 <br /> Attn: Bernie Dietz Prep Method: 5030 <br /> Batch QC Report <br /> Gas/BTEX <br /> Laboratory Control Spike(LCSILCSD) Water QC Batch#2000112/01-01.05 <br /> f LCS: 2000/12/01-01.05-002 Extracted: 12/01/200010:59 Analyzed 12/01/200010:59 <br /> LCSD: 2000/12/01-01.05-003 Extracted: 12/01/200011:32 Analyzed 12/01/200011:32 <br /> Compound Conc. [ug/L] Exp.Conc. [ug/L] Recovery[%] RPD Ctrl. Limits[%] Flags <br /> LCS LCSD LCS LCSD LCS LCSD I%] Recovery RPD LCS LCSD <br /> Gasoline 432 438 500 500 86.4 87.6 1.4 75-125 20 <br /> Benzene 91.0 66.8 100.0 100.0 91.0 86.6 4.7 77-123 20 <br /> Toluene 85.2 80.4 100.0 100.0 85.2 80.4 5,8 78-122 20 <br /> Ethyl benzene 84.3 79.7 100.0 100.0 84.3 79.7 5.6 70-130 20 <br /> Xylene(s) 265 250 300 300 88.3 83.3 5.8 75-125 20 <br /> Surrogate(s) <br /> Trifluorotoluene 424 400 500 500 84,8 80.0 58-124 <br /> 4-Bromoflucrobenzene-FI 373 383 500 500 74.6 76.6 50-150 <br /> - i <br /> ri <br /> i <br /> 1220 Quarry LanePleasanton,CA 94566-4756 <br /> Telephone:(925)464-1919'Facsimile:(.925)484-1096 <br /> Printed on:12/05/2000 15:02 Page 13 of 15 <br />