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CHROMALAB, INC. 5DAYSTURNARMNO <br /> Analytical Laboratory(E694) <br /> August 2, 1991 ChromaLab File No. : 0791204 <br /> MITTELHAUSER CORPORATION <br /> Attn: Marjorie Bushnell <br /> RE: Fourteen soil samples for Gasoline/BTEX and oil & Grease <br /> ' analyses <br /> Project Name: UNOCAL TRACY <br /> Project Number: P1745-01 <br /> Date Sampled: July 23,24 ,25,1991 Date Submitted:July 26, 1991 <br /> Date Extracted: 7/30-8/1/91 Date Analyzed: 7/30-8/1/91 <br /> RESULTS <br /> Ethyl Total Oil & <br /> Sample Gasoline Benzene Toluene Benzene Xylenes Grease <br /> ' o. m k k k <br /> 1745B6-2 .0' ---- ---- ---- ---- ---- 70 <br /> ' 1745B7-3 .51 1.8 140 N.D. N.D. 19 N.D. <br /> 1745B7-9.01 N.D. N.D. N.D. N.D. N.D. <br /> 1745B8-2. 51 __-- ---- --.... _.._.. ---- N.D. <br /> 1745B8-6.0' N.D. N.D. N.D. N.D. N.D. ---- <br /> W745B8-10.0' N.D. N.D. N.D: N.D. N.D. ---- <br /> 1745B9-3 .5' ---- 33 <br /> 1745B9-9 .5' 3400 11000 44000 37000 170000 ---- <br /> 1745B10-5.5f 7.8 170 N.D. 280 9.5 <br /> 1745B10-9. 51 580 620 470 4900 16000 <br /> 1745B11-5.0' N.D. N.D. N.D. N.D. N.D. ---- <br /> 1745B11-9.51 N.D. N.D. N.D. N.D. N.D. ---- <br /> 1745B12-3 .5' 11 <br /> 1745B12-5.5' N.D. N.D. N.D. N.D. N.D. N.D. <br /> BLANK N.D. N.D. N.D. N.D. N.D. N.D. <br /> SPIKE RECOVERY 97.83 87.93 94.73 92 .63 90.43 <br /> DUP SPIKE REC. 94.9% 89. 6% 91.43 92.63 92.83 ---- <br /> DETECTION LIMIT 1.0 5.0 5.0 5.0 5.0 10 <br /> METHOD OF 5030/ 5520 <br /> ANALYSIS 8015 8020 8020 8020 8020 E&F <br /> ' ChromaLab, Inc. <br /> ' DaVi Duong Eric Tam <br /> Chief Chemist Laboratory Director <br /> 2239 Omega Road, #1 San Ramon, California 94583 <br /> 5101831-1788 Facsimile 510/831-8798 <br />' Federal ID x68-0140157 <br />