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STL ChromaLab Submission M 2001-08.0154 <br /> Environmental Services(CA 1094) <br /> i To: CH2M HIII-Oakland Test Method: 82608 <br /> Attn: Keith Sheets Prep Method: 5030B <br /> Batch QC Report <br /> Fuel Oxygenates by 8260B (Low Level) <br /> Laboratory Control Spike(LCS/LCSD) Water QC Batch#2001/08110-01.27 <br /> LCS: 2001108110-01.27-002 Extracted: 081101200111:20 Analyzed 081101200111:20 <br /> LCSD: 2001/08110-01.27-003 Extracted: 081101200111:47 Analyzed 081101200111:47 <br /> Compound Cone. [ug/L] Exp.Conc. [ug/L] Recovery 1%1RPD Ctrl.Limits[°/C] Flags <br /> LCS LCSD LCS LCSD LCS LCSD 1%1 Recovery RPD LCS. LCSD <br /> Methyl tert butyl ether 20.2 18.9 25.0 25.0 80.8 75.6 6.6 65-165 20 <br /> !! Surrogate(s) <br /> 1,2-Dlchloroethane-d4 512 496 500 500 102.4 99.2 76-114 <br /> I <br /> E <br /> I <br /> { <br /> t <br /> f <br /> ! 1220 Quarry Lane'Pleasanton,CA 94566-4756 <br /> Telephone:(925)484-1919'Facsimile:(925)484-1096 <br /> Printed on:08/131200108:03 Page 10 of 11 <br />