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C H RQMALAB, INC. Submission #: 2000-03-0345 <br /> Environmental Services(SDB) <br /> To: CH2M Hili-Oakland Test Method: 8260A <br /> Attn.: Keith Sheets Prep Method: 8260A <br /> Batch QC Report <br /> Fuel Oxygenates by GC/MS <br /> Matrix Spike( MS 1 MSD) Water QC Batch#2000103122-01.39 <br /> Sample ID: B-1 WATER Lab Sample ID:2000-03-0304-010 <br /> MS: 2000103122-01.39-004 Extracted:03/23/2000 02:57 Analyzed: 03/231200002:57 Dilution: 1.0 <br /> MSD: . 2000103122-01.39-005 Extracted:03/23/2000 03:26 Analyzed: 03/23/200003:26 Dilution: 1.0 �.. <br /> Compound Conr- [ug/L] Exp.Conc. u /L Recovery % RPD Ctrl.Limits r/a] Flags <br /> MS MSD ISample MS MSD MS MSD [%i Recoveryl RPD MS MSD <br /> Methyl fart-butyl ether 61.0 63.2 ND 50.0 50.0 122.0 126.4 3.5 65-165 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 529 570 500 500 105.8 114.0 76-114 <br /> I <br /> i <br /> I <br /> 1220 Quarry Lane`Pleasanton,CA 945664756 <br /> Telephone:(925)4841919`Facsimile:(925)484-1096 <br /> Printed on:03/27/2000 18:01 Page 11 of 12 <br /> I ` . <br />