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I <br /> Submission # 2001-07-0582 <br /> STL ChromaLab <br /> Environmental Services(CA 1094) <br /> To Wright Environmental Services Inc Test Method 8015M <br /> Attn Marla Reid Prep Method 5030 <br /> Batch QC Report <br /> Gas/BTEX by 8015MI8021 <br /> Laboratory Control Spike (LCSILCSD) Water QC Batch #2001108!01-01 03 <br /> LCS 2001/08/01-01 03-006 Extracted 08/01/2001 09 44 Analyzed 08/01/2001 09 44 <br /> LCSD 2001108/01-0103-007 Extracted 08101120011015 Analyzed 08/01/20 01 1015 <br /> Compound Conc [ug/L] Ex�Conc �Iu �11 �erCy %]I RPD Ctl <br /> LCS LCSD D [%) �RecroveRP%D �SLCSD <br /> `Gasoline 453 485 500 500 926 970 46 75-125 20 <br /> Surrogate(s) <br /> 4-Bromofluorobenzene-Ft 495 517 500 500 990 1034 50-150 <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 08/06/2001 14 05 Page 13 of 14 <br />