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C H RO MALAB, INC■ Submission #. 2000-07-0290 <br /> Environmental Services(SDS) <br /> To Wright Environmental Services Inc Test Method 8020 <br /> 8015M <br /> Attn Mana Reid Prep Method 5030 <br /> Batch QC Report <br /> GasBTEX <br /> Laboratory Control Spike(LCSILCSD) Water QC Batch#2000107125-01 05 <br /> LCS 2000107125-01 05-002 Extracted 07/25/2000 12 01 Analyzed 07/25/2000 12 01 <br /> LCSD 2000107125-01 05-003 Extracted 07/25/2000 12 32 Analyzed 07/25/2000 12 32 <br /> Compound Conc E ug/L] Exp Conc [ug/L] Recovery[% RPD Ctrl Limits[%] Flags <br /> LCS LCSD LCS LCSD LCS LCSD 1%] Recovery RPD LCS LCSD <br /> Gasoline 527 519 500 500 1054 1038 1 5 75-125 20 <br /> Benzene 84 0 86 9 1000 1000 84 0 869 3 4 77-123 20 <br /> Toluene 814 83 6 1000 1000 814 83 6 2 7 78-122 20 <br /> Ethyl benzene 839 862 1000 1000 839 862 2 7 70-130 20 <br /> Xylene(s) 241 250 300 300 803 83 3 3 7 75-125 20 <br /> Surrogate(s) <br /> Trifluorotoluene 385 396 500 500 770 79 2 58-124 <br /> 4-Bromofluarobenzene-FI 455 444 500 500 91 0 888 50-150 <br /> • <br /> 1220 Quarry Lane'Pleasanton,CA 94566-4756 <br /> Telephone (925)484-1919'Facsimile (925)484-1096 <br /> Pnnted on 07/26/2000 17 10 Page 8 of 8 <br />