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CHROMALAB, INC. 5 DAYS TURNAROUND <br /> Analytical Laboratory(E694) <br /> July 18, 1991 ChromaLab File No. : 0791073 <br /> MITTELHAUSER CORPORATION Attn: Marjorie Bushnell <br /> RE: Eighteen soil samples for Gasoline/BTEX, Diesel, and Oil & <br /> Grease analyses <br /> Project Name: UNOCAL - TRACY <br /> Project Number: P1745 <br /> Date Sampled: July 8-10, 1991 Date Submitted: July 11, 1991 <br /> Date Extracted: July 16-18, 1991 Date Analyzed: July 16-18, 1991 <br /> RESULTS: <br /> Ethyl Total Oil & <br /> Sample Gasoline Diesel Benzene Toluene Benzene Xylenes Grease <br /> No. m k m k k k k m k <br /> 1745B1-3 .0 N.D. ---- 13 N.D. 14 N.D. 37 <br /> 1745B1-8. 0 450 ---- 1200 4500 9800 55000 13 <br /> 1745B2-5.0 N.D. ---- N.D. N.D. N.D. N.D. N.D. <br /> 1745B2-9.5 N.D. N.D. N.D. N.D. N.D. N.D. N.D. <br /> 1745B3-5.0 N.D. ---- N.D. N.D. N.D. N.D. ---- <br /> 1745B3-9.5 N.D. N.D. N.D. N.D. N.D. N.D. ----- <br /> 1745B4-5.0 N.D. ---- N.D. N.D. N.D. N.D. ---- <br /> W1745B4-10.0 N.D. ---- N.D. N.D. N.D. N.D. ----- <br /> 1745B5-6. 0 N.D. N.D. N.D. N.D. N.D. N.D. N.D. <br /> 1745B5-10.0 N.D. N.D. N.D. N.D. N.D. N.D. N.D. <br /> 1745MW1-6.0 N.D. ---- N.D. N.D. N.D. N.D. ---- <br /> 1745MW1-10. 5 N.D. ---- N.D. N.D. N.D. N.D. ---- <br /> 1745MW2-6.0 N.D. ---- N.D. N.D. N.D. N.D. ---- <br /> 1745MW2-11.0 N.D. ---- N.D. N.D. N.D. N.D. ---- <br /> 1745MW3-6.0 N.D. ---- N.D. N.D. N.D. N.D. N.D. <br /> 1745MW3-13.0 N.D. N.D. N.D. N.D. N.D. N.D. N.D. <br /> 1745MW4-6.0 N.D. ---- N.D. N.D. N.D. N.D. ---- <br /> 1745MW4-11.0 N.D. ---- N.D. N.D. N.D. N.D. ---- <br /> BLANK N.D. N.D. N.D. N.D. N.D. N.D. N.D. <br /> SPIKE REC. 94.9% 93.3% 101.0% 100.6% 102 .3% 100.9% ---- <br /> DUP SPIKE REC. 97.8% 85.8% 81.8% 81.3% 82 .2% 87 .4% ---- <br /> DET. LIMIT 1.0 1.0 5.0 5.0 5. 0 5. 0 10 <br /> METHOD OF 5030/ 3550/ 5520 <br /> ANALYSIS 8015 8015 8020 8020 8020 8020 E&F <br /> ChromaLab, Inc. <br /> 6v <br /> I uong Eric Tam <br /> D� <br /> ief Chemist Laboratory Director <br /> 2239 Omega Road,#1 • San Ramon, California 94583 <br /> 41 51831-1 788 • Facsimile 411511131-8798 <br /> Federal ID#68-0140157 <br />