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f <br /> STL ChromaLab submission #: 2001.08-0190 R <br /> Environmental Services(CA 1094) <br /> To: CH2M HILI-Oakland Test Method: 8015M <br /> Attn: Keith Sheets Prep Method: 5030 <br /> Batch QC Report <br /> Gas/BTEX by 8015M18021 <br /> Laboratory Control Spike(LCS/LCSD) Water QC Batch#2001108117-01.05 <br /> LCS: 2001108/17-01.05-007 Extracted: 081171200110:31 Analyzed 081171200110:31 <br /> LCSD: 2001108/17-01.05-008 Extracted: 081171200111:03 Analyzed 08/17/200111:03 <br /> Compound Conc. [uglL] Exp.Conc. [ug/L i Recovery[% RPD Chi. Limits[%] Flags <br /> LCS LCSD LCS LCSD LCRecovery RPD LCS LCSD i <br /> Gasoline 484 561 500 500 96.8 112.2 14.7 75-125 20 I <br /> Surrogate(s) <br /> 4-Bromofluorobenzene-Fi 392 428 500 500 78.4 85.6 50-150 <br /> l I <br /> I <br /> I <br /> I <br /> 1220 Quarry Lane*Pleasanton,CA 94566-4756 <br /> Telephone:(925)484-1919*Facsimile:(925)484-1096 <br /> Printed on:06/28/2001 10:00 Page 8 of 9 <br />