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Submission #: 200,-07-0408 <br /> STL ChromaLab <br /> Environmental Services(CA 1094) <br /> To: Wright Environmental Services Inc Test Method: 82606 <br /> Attn: Chris Palmer Prep Method: 5030BIV - <br /> Batch QC Report <br /> Fuel Oxygenates by 8260B „ <br /> Laboratory Control Spike(LCS/LCSD) Soil QC Batch#2001/07/24-01.27 <br /> LCS: 2001/07/24-01.27-003 Extracted: 07/24/200111:47 Analyzed 07/24/200111:47 <br /> LCSD: 2001/07/24-01.27-004 Extracted: 07/24/200112:14 Analyzed 07/24/200112:14 <br /> Compound Conc. [ug/Kg] Exp.Conc. [ug/Kg] Recovery[%] RPD Ctrl.Limits[%] Flags <br /> LCS LCSD LCS LCSD LCS LCSD l%I Recovery RPD LCS LCSD <br /> Methyl tert-butyl ether 43.7 39.7 50.0 50.0 87.4 79.4 '9.6 65-165 20 <br /> Sunogate(s) <br /> 1,2-Dichloroethane-d4 548 519 500 500 109.6 103.8 70-121 <br /> I <br /> Y <br /> 1. <br /> 9 <br /> u <br /> 1220 Quarry Lane Pleasanton,CA 94566-4756 <br /> Telephone:(925)484-1919"Facsimile:(925)484-1096 <br /> Printed on:07/30/2001 14:04 Page 10 of 11 <br />