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i <br /> CHROMALAB, INC. Submission #: 2000-03-0220 <br /> Environmental Services(SDB) <br /> To: CH2M hill-Oakland Test Method: 8260A <br /> Attn.: Keith Sheets Prep Method: 8260A <br /> i Batch QC Report <br /> Fuel Oxygenates by GUMS <br /> Matrix Spike(MS 1 MSD) Water QC Batch#2000103194-01.06 <br /> Sample ID: MW 19 Lab Sample ID:2000-03-0209-022 <br /> i MS: 2000103/14-01.06-004 Extracted:03/14/2000 17:45 Analyzed: 03/14/2000 17:45 Dilution: 1.0 <br /> MSD: 2000103114-01.06-005 Extracted:.03114/200018:12 Analyzed: 031141200018:12 Dilution: 1.0 <br /> Compound Cona [uglL] Exp.Conc. f to IL] Recovery[% RPD Ctrl.Limits[%] Flags <br /> MS MSD ISample MS MSD MS MSD 1%] IRecoveryl RPD MS MSD <br /> Methyl tart-butyl other 44.3 41.3 ND 50.0 50.0 88.6 82.6 7.0 65-165 20 <br /> Surrogate(s) <br /> 1,2-Dichtoroethane-d4 456 427 500 500 91.2 85.4 76-114 <br /> i <br /> I <br /> i <br /> f <br /> 4 <br /> I <br /> 4 <br /> 1220 Quarry lane•Pleasanton,CA 94566-4756 <br /> Telephone:(925)484-1919Facsimile:(926)484-1096 <br /> Printed on:0311 512000 15:03 Page 6 Of 6 <br /> I <br />