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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 /> Attn Al Ridley Prep Method 5030 <br /> Batch QC Report <br /> Volatile Hydrocarbons by 8015/8020 <br /> Laboratory Control Spike (LCS/LCSD) Soil QC Batch #9999108103-01 04 <br /> LCS 1999108103-01 04-002 Extracted 08103/1999 06 25 Analyzed 08/03/1999 06 25 <br /> LCSD 1999108103-01 04-003 Extracted 08/03/1999 07 19 Analyzed 08103/1999 07 19 <br /> Compound I Conc [mg/Kg] Exp Conc [mg/Kg] Recovery RPD Ctrl Limits[%] Flags I <br /> LCS LCSD LCS LCSD LCS LCSD [%] Recovery RPD j LCS LCSD <br /> Gasoline 0 465 0 465 0 500 0 500 930 930 00 75-125 35 <br /> Benzene 0 104 00920 01000 01000 1040 92 0 122 77-123 35 <br /> Toluene 0 103 00900 01000 01000 1030 900 135 78-122 35 <br /> Ethyl benzene 0 102 00900 01000 01000 1020 90 0 125 70-130 35 <br /> Xylene(s) 0 305 0 267 0 300 0 300 1017 89 0 133 75-125 35 <br /> Surrogate(s) <br /> Tnfluorotoluene 533 513 500 500 1066 1026 53-125 <br /> 4-Bromofluorobenzene-FI 429 451 500 500 858 90 2 58-124 <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 28 of 37 <br />