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C H ROMALAB, INC. Submission # 2000-03-0229 <br /> Environmental Services(SOB) <br /> To Wright Environmental Services Inc Test Method 8260A <br /> Attn John Lynch Prep Method 8260A <br /> Batch QC Report <br /> Fuel Oxygenates by GC/MS <br /> Laboratory Control Spike(LCS/LCSD) Soil QC Batch #2000103116-01 06 <br /> LCS 2000103/16-01 06-002 Extracted 03/16/2000 07 34 Analyzed 03/16/2000 07 34 <br /> LCSD 2000103/16-01 06-003 Extracted 03/16/2000 08 02 Analyzed 03/16/2000 08 02 <br /> Compound Conc [ug/Kg] Exp Conc [ug/Kg] lRecovery[%] RPD Ctri Limits(%] Flags <br /> LCS I LCSD LCS LCSD LCS I LCSD 1 1%] Recovery I RPD LCS I LCSD <br /> Methyl tert-butyl ether 933 950 1000 100 0 933 950 18 65-165 20 <br /> Surrogate(s) <br /> 1 2-Dichloroethane-d4 446 464 500 500 892 928 70-121 <br /> 1220 Quarry Lane"Pleasanton,CA 94566-4756 <br /> Telephone (925)484-1919'Facsimile (925)484-1096 <br /> Printed on 03/17/2000 10 06 Page 15 of 17 <br />