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C H R O11A A L A B' INC. Submission # 1999-05-1049 <br /> f�1 f` Environmental Services (SDS) <br /> To Aqua Science Engineers, Inc Test Method 8015M <br /> 8020 <br /> Attn Robert Kltay Prep Method 5030 <br /> Batch QC Report <br /> Volatile Hydrocarbons by 8015/8020 <br /> Matrix Spike ( MS 1 MSD ) Soil QC Batch # 1999105112-01 01 <br /> Sample ID GB-1 COMP Lab Sample ID 1999-05-1001-001 <br /> MS 1999105112-01 01-004 Extracted 05/12/1999 16 59 Analyze 05/12/1999 16 59 Dilution 1 0 <br /> MSD 1999105112-01 01-005 Extracted 05/13/1999 10 29 Analyze 05/13/1999 10 29 Dilution 1 0 <br /> Compound Conc mg/K I Added I Recovery % I RPD I Control Limits% Flags <br /> MS MSD Sample I Amount MS MSDI I Recovery RPD MS MSD 1 <br /> Gasoline 1 70 1 63 ND i 25 680 652, 1 1 75-125 35 I <br /> Surrogate(s) 1 <br /> 4-Bromoflucrobenzene 337 326 1 50 674 65 2' 65-135 <br /> 1220 auarry Lane"Pleasanton Califomia 94566-4756 <br /> Telephone (925)484-1919*Facsimile (925)484-1096 <br /> Printed on 05/19/1999 11 17 Page 5 of 6 <br />