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STL C h ro ma La b Submission #: 2001-09-0185 <br /> .. -1 Environmental Services(CA 1094) <br /> To: San Joaquin Company, Inc. Test Method: 8021 B <br /> Attn: Dai Watkins Prep Method: 5030 <br /> Batch QC Report <br /> j Gas/BTEX by 8015M18021 <br /> Laboratory Control Spike(LCS/LCSD) Water QC Batch#2001109114-01.05 <br /> LCS: 2001109114-01.05-004 Extracted: 091141200109:16 Analyzed 091141200109:16 <br /> =% LCSD: 2001109114-01.05-005 Extracted: 091141200109:48 Analyzed 091141200109:48 <br /> r; c Compound Conc. [ug/ ] Exp.Conc, [ug/L] Recovery[%] RPD CIO.Limits[%] Flags <br /> LCS LCSD LCS LCSD LCS LCSD [%] Recovery RPD LCS LCSD <br /> Benzene 98.2 99.0 100.0 100.0 98.2 99.0 0.8 77-123 20 <br /> Toluene 104 103 100.0 100.0 104.0 103.0 1.0 78-122 20 <br /> Ethyl benzene 1105 103 100.0 100.0 105.0 103.0 1.9 70-130 20 <br /> Xylene(s) 312 305 I 300 300 104,0 101.7 2.2 75-125 20 <br /> Surrogate(s) <br /> Trifluorololuene 496 498 500 500 99.2 99.6 58-124 <br /> i <br /> is <br /> } <br /> i` <br /> I. .i <br /> 1220 Quarry Lane'Pleasanton,CA 94566-4756 <br /> Telephone:(925)484-1919'Facsimile:(925)484-1096 <br /> Printed on-09/17/2001 09:24 Page 13 of 15 <br /> I <br /> I. <br /> � i <br />