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CH RO MALAB, INC. 5 DAYS TURNAROUND <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 /> No. (mg/k k k k kci) (mqZkgY <br /> 1745B6-2.0' ----- ---- ---- ---- ---- 70 <br /> 1745B7-3 .5' 1.8 140 N.D. N.D. 19 N.D. <br /> 1745B7-9.0' N.D. N.D. N.D. N.D. N.D. ---- <br /> 1745B8-2 .5' ---- ---- -_-_ ---- N.D. <br /> 745B8-6.0' N.D. N.D. N.D. N.D. N.D. <br /> 1745B8-10.0' 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. 5' 7.8 170 N.D. 280 9.5 ---- <br /> 1745810-9. 5' 580 620 470 4900 16000 ---- <br /> 1745B11-5.0' N.D. N.D. N.D. N.D. N.D. ---- <br /> 1745B11-9.5' 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 97.8% 87. 9% 94.7% 92 . 6% 90.4% ---- <br /> DUP SPIKE REC. 94.9% 89. 6% 91.4% 92 .6% 92 . 8% ---- <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 Raman, California 94583 <br /> 5101831-1788 Facsimile 5101831-8798 <br /> Federal ID#68-0140157 <br />