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I <br /> STL C h ro ma La b Submission N: 2001-08.0214 <br /> Environmental Services(CA 1094) <br /> To., CH21011 Hill-Oakland Test Method: 8260B <br /> Attn.: Keith Sheets Prep Method: 5030B <br /> Batch QC Report <br /> Fuel Oxygenates by 8260B (Low Level) <br /> Matrix Spike( MS 1 MSD) Water QC Batch#2001108116-V1.27 <br /> Sample ID: CPT-17(122') Lab Sample ID: 2001-08-0214-002 <br /> MS: 2001108116-V1.27-025 Extracted:08/161200123:09 Analyzed: 081161200123:09 Dilution: 1.0 <br /> MSD: 2001108116-V7.27-026Extracted:08/16/200123:32 Analyzed: 081161200123:32 Dilution: 1.0 <br /> Compound Conc. [ug/L] Exp.Conc. A u /L I lRecoveq[% RPD Ctrl.Limits[%] Flags <br /> MS MSD Sample MS MSD I MS MSD [%] Recovery RPD MS MSD <br /> Methyl tert-butyl ether 19.6 20.0 ND 25 25 76.4 80.0 2.0 65-165 20 <br /> surrogate(s) <br /> 1,2-131chloroethene-M 540 553 500 500 108.0 110.6 76-114 <br /> I ' <br /> 1220 Quarry Lane"Pleasanton,CA 94566-4756 <br /> Telephone:(925)484-1919Facsimile,(925)484-1096 <br /> Printed on:08/17/2001 12:02 Page 6 of 6 <br />