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CH ROMALAB, INC. Submission #: 2000-03-0229 <br /> Environmental Services(SDB) <br /> To Wright Environmental Services Inc Test Method 8015M <br /> 8020 <br /> Attn John Lynch Prep Method 5030 <br /> Batch QC Report <br /> Gas/BTEX <br /> Laboratory Control Spike (LCS/LCSD) Soil QC Batch #2000103121-0J04 <br /> LCS 2000103121-01 04-002 Extracted 03/21/2000 10 57 Analyzed 03/21/2000 10 57 <br /> LCSD 2000103121-0104-003 Extracted 03/21120001125 Analyzed 03121120001125 <br /> Compound Conc [mg/Kg] Exp Conc [mg1Kg lRecovery[%]I RPD CM Limits[%] Flags <br /> LCS LCSD I LCS I LCSD I LCS LCSD [%] Recovery RPD LCS LCSD <br /> Gasoline 0 431 0 421 0 500 0 500 862 842 23 75-125 35 <br /> Benzene 00875 00755 01000 01000 875 755 14 7 77-123 35 <br /> Toluene 00890 0 0763 01000 01000 890 763 154 78-122 35 <br /> Ethyl benzene 00870 00759 01000 01000 87 0 759 136 70-130 35 <br /> Xylene(s) 0 265 0 231 0 300 0 300 883 770 137 75-125 35 <br /> Surrogate(s) <br /> Tnfluorotoluene 419 350 500 500 83 8 7001 53-125 <br /> 4•Bromofluorobenzene-FI 465 471 500 500 93 0 9421 58-124 <br /> 1220 Quarry Lane'Pleasanton CA 94566-4756 <br /> Telephone (925)484-1919"Facsimile (925)484-1096 <br /> Printed on 03/23/2000 1146 Page 14 of 15 <br />