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STL ChromaLab Submission #, 2001-04-0530 <br /> Errnronmental Services(CA 1094) <br /> To Wright Environmental Services Inc Test Method 8015M <br /> 8020 <br /> Attn Marla Reid Prep Method 5030 <br /> Batch QC Report <br /> Gas/BTEX <br /> Laboratory Control Spike (LCS/LCSD) Water QC Batch #2001104126-01 03 <br /> LCS 2001/04/26-01 03-008 Extracted 04/26/2001 12 02 Analyzed 04/26/2001 12 02 <br /> LCSD 2001104126-01 03-009 Extracted 04/26/2001 12 33 Analyzed 04/26/2001 12 33 <br /> Compound Conc [ug/L j Exp Conc [ug/L jRecovery[%) RPDCtrl Limits[%] Flags <br /> LCS LCSD LCS LCSD LCS I LCSD [%I Recovery RPD LCS I LCSD <br /> Gasoline 376 407 500 500 752 814 79 75-125 20 <br /> Surrogate(s) <br /> 4-Bromoftuorobenzene-FI 378 383 500 500 756 766 50-150 <br /> Tnfluorotoluene-FID 428 432 500 500 856 864 58-124 <br /> 1220 Quarry Lane'Pleasanton CA 94566-4756 <br /> Telephone (925)484-1919'Facsimile (925)4841096 <br /> Printed on 05/02/2001 16 51 Page 16 of 19 <br />