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STL ChromaLab Submission #: 2001-08-0154 <br /> Environmental Services(CA 1094) <br /> To: CH2M Hill-Oakland Test Method: 8015M <br /> Attn: Keith Sheets Prep Method: 5030 <br /> Batch QC Report <br /> Gas/BTEX by 8015M18021 <br /> i <br /> Laboratory Control Spike(LCS/LCSD) Water QC Batch#2001108115-01.03 <br /> LC8: 2041108115-01.03-008 Extracted: 081151200111:13 Analyzed 081151200111:13 <br /> r <br /> LCSD: 2001108115-01.03-009 Extracted: 081151200141:52 Analyzed 081151200111:52 <br /> Compound Conc. [ug/L] Exp.Conc. [ug/L] Recovery 1%] RPD Ctrl.Limits j%] Flags <br /> LCS LCSD LCS LCSD LCS LCSD [%] Recovery RPD LCS LCSD <br /> Gasoline 480 494 500 500 96.0 98.8 2.9 75-125 20 <br /> Surrogate(s) <br /> 4-BromoHuorobenzene-Fi 432 450 500 500 86.4 90.0 50-150 <br /> i <br /> i <br /> i <br /> i <br /> f <br /> I <br /> I <br /> 1220 Quarry Lane•Pleasanton;CA 945664756 <br /> Telephone:(925)484-1919•Facsimile:(925)484-1096 <br /> Printed on:08115/2001 17:27 Page 13 of 14 <br /> I <br />