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CHROMALAB, INC. <br /> 5 DAYS TURNARCUND <br /> Analytical Laboratory(E694) <br /> ' September 19, 1991 ChromaLab <br /> File No. ; 0991083 <br /> MITTELHAUSER CORPORATION <br /> stn: Roger W. Papler <br /> ' E: One water sample for Gasoline/BTEX analysis <br /> Project Name: UNOCAL — TRACY <br /> Project Number: 1745-01 <br /> Date Sampled: Sept. 12, 1991 Date Submitted; Sept. 12, 1991 <br /> Date Extracted: Sept. 17, 1991 Date Analyzed: Sept. 17, 1991 <br /> ' RE <br /> l Total <br /> ' Sample Gasoline Benzene Toluene Benzene Xylenes <br /> ' MW4 N.D. N.D. N.D. N.D. N.D. <br /> BLANK N.D. N.D. N.D. N.D. <br /> SPIKE RECOVERY 91.8% 80.84 82 .4% 88.5% 93.6% <br /> DETECTION LIMIT 30 0. 5 0.5 0.3 0.5 <br /> METHOD OF 5030/ <br /> ANALYSIS 8015 602 602 602 602 <br /> ChromaLab, Inc. <br /> d <br /> D u o n g Eric Tam <br /> Chief Chemist Laboratory Director <br /> 2239 Omega Road, 01 - San Ramon, California 94583 <br /> 5101831.1788 Facsimiia 5`101831-8798 <br /> Feeeral W 866-0140157 <br />