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I <br /> 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 /> Matrix Spike( MS 1 MSD) Soil QC Batch #1999108103-01 04 <br /> a <br /> Sample ID #1 Lab Sample ID 1999-08-0009-001 <br /> MS 1999108103-01 04-004 Extracted 08/03/1999 10 10 Analyzed 08/03/1999 10 10 Dilution 10 <br /> MSD 1999108103-01 04-005 Extracted 08/03/1999 18 36 Analyzed 08/03/1999 18 36 Dilution 1 0 <br /> iCompound Conc [mg1Kg] Exp Conc mg/Kg Recovery % RPD Ctrl Limits[°/aj Flags <br /> �Ms MSD Sample MS MSD MS MSD (%] Recovery RPD^ MS MSD <br /> Gasoline 10 329 I 0 397 ND 0 450 0 484 7311 820 115 65-135 i 35 <br /> Benzene 00760 100870 ND 00899 00969 845 898 61 65-135 I 35 <br /> Toluene 00770 100870 IND 00899 00969 857 898 4 7 I 65-135 35 <br /> Ethyl benzene 0 0770 0 0870 ND 00899 00969 857 89 8 4 7 65-135 35 <br /> Xylene(s) 10229 0 260 ND 0 270 0 291 848 89 3 52 65-135 35 <br /> Surrogate{s} <br /> I Tnfluorotoluene 477 `476 500 500 954 95 2 53-125 <br /> 4-Bromofluorobenzene- 332 E 376 500 500 664 75 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 33 of 37 <br />