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CHROMALAB, INC. Submission #: 1999-07-0488 <br /> Environmental Services(SDE) <br /> To: Earth Systems Consultants Test Method: 8020 <br /> Attn: Jeanne Suckthal Prep Method: 5030 <br /> Batch CC Report <br /> Gas/BTEC (Methanol Extraction) <br /> Laboratory Control Spike(LCSILCSD) Soil QC Batch#1999108102-05.02 <br /> I <br /> LCS: 1999/08/02-05.02-002 Extracted: 08/02/199910:07 Analyzed: 081021199910:07 <br /> LCSD: 1999108/02-05.02-003 Extracted: 08/021199911:03 Analyzed: 081021199911:03 <br /> Compound Conc. [mg/Kg] Exp.Conc. [mg/Kg] Recovery[%] RPD Ctrl.Limits[%] Flags <br /> LCS LCSD LCS LCSD LCS LCSD [%] Recovery RPD LCS LCSD <br /> Benzene 0.108 0.141 0.125 - 0.125 118.6 115.2 2.7 T7-123 35 <br /> Toluene 0.152 0.150 0.125 0.125 121.6 120.0 1.3 78122 35 <br /> Ethyl taanzene 0.160 0.156 0.125 0.125 128.0 126.8 2.5 78130 35 <br /> Xylene(s) 0.367 0.380 0.375 0.375 1031 101.3 1.9 75-125 35 <br /> Surrogate(s) <br /> Tnilwhy lu. 565 465 500 500 1110 97.0 53-125 <br /> 1220 Quarry Lane Pleasanbn.CA 945664756 <br /> Telephone:(925)4841919'Fac mile:(925)1841096 <br /> PnntM on:0&0611999 08:47 Page 5 of 5 <br />