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PRI 15. .- 09 4 1 5 — 8 3 1 — 8 7 9 8 .�. <br /> CHROMALAB9 INC. <br /> 5 BAYS TURNAROUND <br /> Analytical Laboratory(E694) <br /> May 10, 1991 ChromaLab File No. : 0591022 <br /> ALTON GEOSCIENCE, INC. <br /> Attn: Tridib Guha <br /> RE:_ Seven water samples for Gasoline/BTEX and Diesel analyses <br /> Project Name: MOBIL BULK PLANT, TRACY <br /> Project Number: 30-136 <br /> Date Sampled: 4/30--5/1/91 Date Submitted: 4/30-5/1/91 <br /> Date Extracted: May 6-9, 1991 Date Analyzed:'lMay 6-9, 1991 <br /> RES LTS• <br /> Ethyl Total <br /> Sample Gasoline Diesel Benzene Toluene Benzene Xylenes . <br /> No. ll (Im (JACI (1ha/1 .(ugll) (Ug1l) <br /> B-1 N.D. N.D. N.D. N.D. N.D. N.D.- <br /> B-4(Aw-s) N.D. N.D. N.D., N.D. N.D. N.D. <br /> B-5 N.D. N.D. N.D. N.D. N.D. N.D. <br /> B-6 250 1400 N.D.. N.D. N.D. N.D. k <br /> B-7 60000 110000 " 560 N.D. 1100. 6. <br /> B-8 N.D. - 540 N.D. N.D. N.D. N.D,. <br /> B-9 (Aw-9) N.D. 270 N.D. N.D. N.D. N.D. <br /> BLANK N.D. N.D. N.D. N.D. N.D. N..:b.y <br /> SPIKE REC. 85.2% 97.7% 86.4% 92.2$ - 90.8% 90:6$ <br /> DUP SPIKE REC 101. 1% 93 . 4% 100.2% 98.4% 93 .4% 90.2% <br /> DET. LIMIT 50 - 50 0.5 0.5 0. 5 0.5 <br /> METHOD OF 5030/ 3510/ <br /> ANALYSIS 8015 8015 602 602 602 - 602 <br /> ChromaLab, Inc. <br /> id Duong Eric Tam <br /> Chief Chemist Laboratory Director, <br /> 2239 Omega Road,#1 • San Ramon, California 94583 <br /> 418!831-1788 • Facsimile 415831.8798 <br /> Federal 10#6"140157 <br />