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C H RO MALAB, INC. Submission #. 1999-08-0026 <br /> Environmental Services (SDB) <br /> To URS Greiner Woodward Clyde- Oakland Test Method 8015M <br /> 8020 <br /> iAttn Al Ridley Prep Method 5030 <br /> Batch QC Report <br /> Volatile Hydrocarbons by 8015/8020 <br /> Laboratory Control Spike (LCS/LCSD) Soil QC Batch #1999108104-01 04 <br /> LCS 1999/08/04-01 04-402 Extracted 08/04/1999 06 42 Analyzed 08/04/1999 06 42 <br /> I LCSD 1999/08/0401 04-003 Extracted 08/04/1999 07 35 Analyzed 08/04/1999 07 35 <br /> Compound Conc [mg/Kg] Exp Conc [mg/Kg] Recovery[%] RPD Ctrl Limits[%] Flags <br /> LCS LCSD LCS LCSD LC5 LCSD [%] Recovery RPD LCS LCSD <br /> Gasoline 0 437 0 449 0 500 0 500 874 898 27 75-125 35 <br /> Benzene 0 104 0 100 01000 01000 1040 1000 3 9 77-123 35 <br /> Toluene 0 103 00980 01000 01000 1030 98 0 5 0 78-122 35 <br /> Ethyl benzene 0 102 00970 01000 01000 1020 970 50 70-130 35 <br /> Xylene(s) 0 304 10 290 0 300 0 300 1013 96 7 4 6 75-125 1 35 <br /> Surrogate{s} ' a <br /> Tnfluorotoluene 530 516 500 500 1060 1032 53-125 <br /> 4-Bromofluorobenzene-F1 1 427 1419 500 I 500 854 838 58-124 <br /> i <br /> 1220 Quarry Lane'Pleasanton,CA 94566-4756 <br /> Telephone (925)484-1919*Facsimile (925)484-1096 <br /> ' Printed on 08/27/1999 14 00 Page 30 of 37 <br />