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B C Analytical ANALYTICAL REPORT <br /> 1255 Powell Street <br /> Fmeryvidle,CA 94608 RECEIVED <br /> V <br /> 510/428-2300 <br /> LOG NO: E92-07-018 <br /> Fax:5101547-364.3 JUL 2 31992 <br /> CH2M Received: Ol JUL 92 <br /> SAN FRANC SCO <br /> Mailed: JUL 21 1992 <br /> Mr. Bern Baumgartner <br /> CH2M Hill <br /> 1111 Broadway, Suite 1200 <br /> Oakland, California 94607-4046 <br /> Project: SF031604.P3 <br /> REPORT OF ANALYTICAL RESULTS Page 1 <br /> LOG NO SAMPLE DESCRIPTION, GROUND WATER SAMPLES DATE SAMPLED <br /> ----------- --------------------------------------------------- --------------------- <br /> 07-018-1 MW-DIS-1 30 JUN 92 <br /> 07-018-2 MW-DIS-2 30 JUN 92 <br /> 07-018-3 MW--DIS-3 30 JUN 92 <br /> 07-018-7 MW-DIS-7S 30 JUN 92 <br /> 07-018-8 MW-DIS-7D 30 JUN 92 <br /> ----------- --------------------------------------------------- --------------------- <br /> PARAMETER 07-018-1 07-018-2 07-018-3 07-018-7 07-018-8 <br /> ------------------------------ ---------- ---------- -- <br /> Lead, mg/L 0.28 0.013 0.003 0.003 0.004 <br /> Nitric Acid' Digestion, Date 07.07.92 07.07.92 07.07.92 07.07.92 07.07.92 <br /> Aromatic Hydrocarbons <br /> Date Analyzed 07.10.92 07..09.92 07.08.92. 07.08.92 07.08.92 <br /> Dilution Factor, Times 400 100 1 1 1 <br /> Benzene, ug/L 29000 9200 <0.5 <0.5 1.6 <br /> Ethylbenzene, ug/L 3400 1800 <0.5 <0.5 2.3 <br /> Toluene, ug/L 37000 9200 0.8 0.8 9.8 <br /> Total Xylene Isomers, ug/L 17000 14000 1.4 1.2 19 <br /> TPH - Volatile Hydrocarbons <br /> Date Analyzed 07.10.92 07.09.92 .07.08.92 07.08.92 07.08.92 <br /> Dilution Factor, Times 400 100 1 1 1 <br /> C6 to C14 (as gasoline), ug/L 130000 59000 60 <50 60 <br /> Approximate Character, . GASOLINE GASOLINE GASOLINE NO PATTERN GASOLINE <br /> ------------------------------ ---------- ---------- ------------ ---------- ---------- <br />