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Subm[ssion#: 2x00-o�-o26s <br /> CHROMALAB, INC. <br /> Environmental Services(SDB) <br /> To: CH2M Hill-Oakland Test Method: 8020 <br /> 8015M <br /> Attn: Keith Sheets Prep Method: 5030 <br /> Batch QC Report <br /> Gas/BTEX <br /> Laboratory Control Spike(LCS/LCSD) Water QC Batch#2000101125-01.05 <br /> LCS: 2000101125-01.05-002 Extracted: 011251200013:31 Analyzed: 011251200013:31 <br /> LCSD: 2000101125-01.05-003 Extracted: 011251200014:05 Analyzed: 011251200014:05 <br /> t " <br /> Compound Conc. [ug/L] Exp.Conc. [ug/L] Recovery[% RPD Ctrl. Limits[%] Flags <br /> LCS LCSD LCS LCSD LCS LCSD [0/6] Recovery RPD LCS LCSD <br /> Gasoline 477 484 500 500 95.4 96.8 1.5 75-125 20 <br /> Benzene 98.3 101 100.0 100.0 98.3 "101.0 2.7 77-123 20 <br /> Toluene 93.9 93.9 100.0 100.0 93.9 93.9 0.0 78-122 20 <br /> Ethyl benzene 95.3 94.6 100.0 100.0 95.3 94.6 0.7 70-130 20 <br /> Xylene(s) 281 278 300 300 93.7 92.7 1.1 75-125 20 <br /> Surrogate(s) <br /> 4-11romofluorobenzene 463 474 500 500 92.6 94.8 50-150 <br /> Trifluorotoluene 464 464 500 500 92.8 92.8 58-124 <br /> 4-Bromofluorobenzene-FI 403 409 500 500 80.6 81.8 50-150 <br /> Il <br /> i <br /> i <br /> i <br /> 1220 Quarry Lane"Pleasanton,CA 945664756 <br /> Telephone:(925)484-1919Facsimile:(925)484-1096 <br /> Printed on:01125/200017:39 Page 14 of 15 " <br />