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CHROMALAB, INC. Submission #: 1999-12-0377 ; <br /> Environmental Services (SDB) f <br /> To: CH2M Hili-Oakland Test Method: 8260A <br /> Attn: Keith Sheets Prep Method: 5030 �I <br /> Batch QC Report <br /> Volatile Organics by GCIMS EPA8260A <br /> Laboratory Control Spike(LCSILCSD) Soil QC Batch#1999112130-01.07 <br /> LCS: 1999112130-01.07-002 Extracted: 121301199912.23 Analyzed: 121301199912:23 <br /> LCSD: 1999112130-01.07-003 Extracted: 12/30/1999 11:05 Analyzed: 12130/199911:05 <br /> Compound Conc. [ug/KgEx <br /> ] p.Cont. <br /> [uglKg] Recovery 10/01 RPD Ctrl. Limits[%] Flags <br /> LCS LCSD LCS LCSD LCS LCSD Recovery RPD LCS LCSD <br /> Benzene 101 98.0 100.0 100.0 101.0 98.0 3.0 69-129 20 <br /> Chlorobenzene 93.2 93.2 100.0 100.0 93.2 93.2 0.0 61-121 20 <br /> 1,1-Dichloroethene 109 113 100.0 100.0 109.0 113.0 3.6 65-125 20 <br /> Toluene . 99.1 96.8 .100.0 100.0 99.1 96.8 2.3 70-130 20 <br /> Trichloroethene 107 103 100.0 . 100.0 107.0 103.0 3.8 74-134 20 ` <br /> Surrogate(s) <br /> 4-Bromofluorobenzene 569 544 500 500 113.8 108.8 74-121 <br /> 1,2-Dichloroethane-d4 414 419 500 500 82.8 83.8 70-121 <br /> Toluene-d8 478 465 50o 500 95.6 93.0 81-117 <br /> l <br /> I , <br /> l <br /> 1220 Quarry Lane Pleasanton,CA 94566-4756 <br /> Telephone:(925)484-1919'Facsimile:(925)484-1096 <br /> Printed on:01/031200015:09 Page 4 Of 4 jl <br />