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C H RO MALAB, INC. Submission # 1999-05-1136 <br /> Environmental Services(SDB) <br /> To Aqua Science Engineers, Inc. Test Method 8020 <br /> j 8015M <br /> Attn Greg Schramn Prep Method 5030 <br /> Batch QC Report <br /> Volatile Hydrocarbons by 8015/8020 <br /> Matrix Spike ( MS / MSD ) Water QC Batch # 1999/05119-01 03 <br /> Sample ID MW2 Lab Sample ID 1999-05-1102-002 <br /> MS 1999/05/19-01 03-004 Extracted 05/19/1999 10 40 Analyze 05/19/1999 10 40 Dilution 1 0 <br /> MSD 1999/05/19-01 03-005 Extracted 05/19/1999 11 34 analyze 05/19/1999 11 34 Dilution 1 0 <br /> Compound Conc [ ug/L J Added Recovery % RPD Control Limits % Flags <br /> MS MSD Sample Amount MS MSD Recovery RPD MS MSD <br /> Gasoline 39271 35772 190 2500 1495 1355 25 65-135 20 <br /> Surrogate(s) <br /> 4Bromofluorobenzene-F 5279779 6273794 50o 1056 1255 50-150 <br /> 1220 Quarry Lane`Pleasanton,Califomia 94566-4756 <br /> Telephone (925)4841919'Facsimile (925)484-1096 <br /> Printed on 0512511 999 08 01 Page 8 of 9 <br />