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STL ChromaLab Submission #: 2001-05-0569 <br /> Environmental Services(CA 1094) <br /> To: San Joaquin Company, Inc. Test Method: 8020 <br /> Attn: Bernie Dietz Prep Method: 5030 <br /> j Batch QC Report <br /> Gas/BTEX <br /> I <br /> Laboratory Control Spike(LCSILCSD) Water QC Batch#2001106/01-01.05 <br /> LCS: 2001106101-01.05-004 Extracted: 061011200109:15 Analyzed 061011200109:15 <br /> LCSD: 2001106101-01.05-005 Extracted: 061011200109:48 Analyzed 061011200109:48 <br /> Compound Conc. [ug/L] Exp.Conc, [ug/L] Recovery[%] RPD Ctrl.Limits[%] Flags <br /> LCS LCSD LCS LCSD LCS LCSD [%] Recovery RPD I LCS LCSD <br /> Benzene 106 101 100.0 100.0 106.0 101.0 4.8 77-123 20 <br /> Toluene 102 95.5 100.0 100.0 102.0 95.5 6.6 78-122 20 <br /> ' Ethyl benzene 104 97.2 100.0 100.0 104.0 97.2 6.8 70-130 20 <br /> Xylene(s) 324 308 300 300 108.0 102.7 5.0 75-125 20 <br /> Surrogate(s) <br /> Trifluorotoluene 501 490 500 500 100.2 98.0 58-124 <br /> I <br /> r <br /> I <br /> j <br /> % 1220 Quarry LanePleasanton,CA 94566-4756 <br /> Telephone:(925)464-1919'Facsimile:(925)484-1096 <br /> Printed on:06/0712001 15:04 Page 11 of 17 <br /> i j <br />