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Submission #: 2001-09-0185 <br /> STL ChromaLab <br /> J <br /> Environmental Services(CA 1094) <br /> a To: San Joaquin Company,Inc. Test Method: 8021 B <br /> Attn: Dai Watkins Prep Method: 5030 <br /> Batch QC Report <br /> f. Gas/BTEX by 8015M/8021 <br /> 'Laboratory Control Spike (LCS/LCSD) Water QC Batch#2001109113-04.05 <br /> LCS: 2001/09/13-01.05-004 Extracted: 09/13/200108:52 Analyzed 09/13/200108:52 <br /> i <br /> LCSD: 2001/09113-01.05-005 Extracted: 09/13/2001 09:24 Analyzed 09/13/2001 09:24 <br /> Compound Conc. [ug/L] Exp.Conc. [ug/L] Recovery[%] RPDCtrlery RPD.Limits[%] Flags <br /> LCS LCSD LCS LCSD LCS LCSD i%] RecovLC5 LCSD <br /> Benzene 100 94.8 I 100.0 100.0 100.0 94.8 5.3 77-123 20 <br /> Toluene 107 99.0 100.0 100.0 107.0 99.0 7.8 78-122 20 <br /> 1 Ethyl.benzene 106 99.8 100.0 100.0 106.0 99.8 6.0 70-130 20 <br /> �a <br /> Xylene(s) 307 293 300 300 102.3 97.7 4.6 75.125 20 <br /> Surrogate(s) <br /> Trinuorotoluene 515 479 500 500 103.0 95.8 58-124 <br /> i <br /> j <br /> l'-1 <br /> f <br /> l <br /> 1220 Quarry LanePleasanton,CA 94566-4756 <br /> fTelephone.(925)484-1919`Facsimile:(925)484-1096 <br /> Printed on:09/17/2001 09:24 Page 11 of 15 <br /> i <br />