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i <br /> CHROMALAB, INC. Submission#: 2000-03-0345 <br /> i Environmental Services(SDB) <br /> To: CH2M Hili-Oakland Test Method: 8015M <br /> �- 8020 <br /> Attn: Keith Sheets Prep Method: 5030 <br /> Batch QC Report <br /> GasIBTEX <br /> Laboratory Control Spike(LCSILCSD) Water, . QC Batch#2000103124-01.03 <br /> LCS: 2000103124-01.03-002 Extracted: 031241200010:14 Analyzed 031241200010:14 <br /> M LCSD: 2000103124-01.03-003 Extracted: 03/24/2000 12:25 ' Analyzed 03/24/2000 12:25 <br /> Compound Conc. [uglL] Exp.Conc. [ug/L Recovery[%] RPD Ctrl.Limits[°/a] Flags <br /> LCS LCSD LCS LCSD LCS LCSD [%] Recovery RPD LCS LCSD <br /> Gasoline 480 445 500 500 96.0 89.0 7.6 75-125 20 <br /> r <br /> Benzene 82.1 82.8 100.0 100.0 82.1 82.8 0.8 77-123 20 <br /> Toluene 83.9 85.3 100.0 100.0 83.9 85.3 1.7 78-122 20 <br /> Ethyl benzene 80.0 81.0 100.0 '100.0 80.0 81.0 1.2 70-130 20 <br /> } Xylene(s) 233 238 300 300 77.7 79.3 2.0 75-125 20 <br /> r Surrogate(S) <br /> Trifluorotoluene 424 432 500 500 84.8 86.4 58-124 <br /> I ' <br /> I. <br /> 4-Bromofluorobenzene-FI 436 419 500. 500 87.2 83.8 50-150 <br /> r . <br /> _ I <br /> : I <br /> I <br /> i <br /> f <br /> i <br /> 1220 Quarry LanePleasanton,CA 94566-4756 <br /> Telephone:(925)4841919'Facsimile:(925)484-1096 <br /> Printed on:03/27/2000 09:33 <br /> Pae 10 of 10 <br /> g <br />