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s <br /> ,., <br /> STL ChromaLab Submission # 2401-04-0534 <br /> Environmental Services(CA 1094) <br /> To Wright Environmental Seances Inc Test Method 8015M <br /> 8020 <br /> Attn Mana Reid Prep Method 5030 <br /> Batch QC Report <br /> Gas/BTEX <br /> Laboratory Control Spike (LCSILCSD) Water QC Batch #2001104125-01 03 <br /> LCS 2001104/25-01 03-007 Extracted 04/2512001 10 51 Analyzed 04/25/2001 10 51 <br /> LCSD 2001104/25-0103-008 Extracted 04/25/2001 11 22 Analyzed 04/25/2001 1122 <br /> i <br /> Compound Conc [ug/L] Exp Conc [ug/L] Recovery[% RPD Ctrl Limits[%] Flags <br /> LCS LCSD LCS LCSD I LCS LCSD I N Recovery RPD LCS I LCSD <br /> Gasoline 414 440 500 500 82 8 88 0 6 1 75-125 20 <br /> Surrogate(s) <br /> 4-Bromofluorobenzene-FI 433 452 500 500 86 6 90 4 50-150 <br /> I <br /> 1220 Quarry Lane`Pleasanton,CA 94566-4756 <br /> Telephone (925)484-1919'Facsimile (925)484-1096 <br /> Panted on 05/02/2001 16 51 Page 14 of 19 <br />