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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> 1900 Bates Avenue,Suite L Concord, CA 94520 (510) 686 9600 FAX (510) 686 9689 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> IOMPDS Services Client Project ib Unocal#6981,4707 Pacific Ave, Stockton Sampled Oct 26-27, 1994 <br /> 2401 Stanwell Dr, Ste 400 Matrix Descript Water Received Oct 27, 1994 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015/8020 Reported Nov 10, 1994 <br /> Attention Avo Avedissian First Sample# 410-1833 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Chromatogram DL Mult Date Instrument Surrogate <br /> Number Description Pattern Factor Analyzed ID Recovery, % <br /> (GSC Limits <br /> 70-130%) <br /> 410-1833 MW-1 Unidentified 10 11/2/94 HP-2 116 <br /> Hydrocarbons <C7* <br /> 410-1834 MW-2 Gasoline 100 11/2/94 HP-2 111 <br /> 410-1835 MW-3 Gasoline 10 11/2/94 HP-5 87 <br /> 410-1836 MW-4 Gasoline 20 11/2/94 HP-5 82 <br /> 410-1837 MW-5 Gasoline 40 11/4/94 HP-4 83 <br /> 410-1838 MW-6 -- 1 0 11/2/94 HP-2 97 <br /> 410-1839 MW-7 Gasoline 20 11/3/94 HP-5 94 <br /> 410-1840 MW-8 -- 1 0 11/3/94 HP-5 93 <br /> 410-1841 MW-9 -- 1 0 11/4/94 HP-4 92 <br /> 410-1842 MW-10 -- 1 0 11/4/94 HP-4 94 <br /> SEQUOIA ANALYTICAL, #1271 Please Note <br /> *"Unidentified Hydrocarbons <C7"refers to unidentified peaks in the EPA 8010 range <br /> Signature on File <br /> Alan B Kemp <br /> Project Manager <br /> 4101833 MPD <2> <br />