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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> MW <br /> Analytical D— 1400 Bates Avenue,Suite L Concord,CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> 819 Strjker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> *MPDS Services Client project I D Unocal#2859,1665 Pacific Ave,Stockton Sampled May 23, 1994 <br /> 2401 Stanwell Dr, Ste 400 Sample Matrix Water Received May 23, 1994 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015/8020 Reported Jun 7, 1994 <br /> Attention Avo Avedessian First Sample# 405-1186 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample <br /> Analyte Limit I D <br /> µg/L 405-1186 <br /> MW7 <br /> Purgeable <br /> Hydrocarbons 50 N D <br /> Benzene 05 N D <br /> Toluene 05 N D <br /> Ethyl Benzene 05 N D <br /> Total Xylenes 0 5 N D <br /> Chromatogram Pattern -- <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 <br /> Date Analyzed 6/3/94 <br /> Instrument Identification HP-4 <br /> Surrogate Recovery, % 103 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> SEQUOIA ANALYTICAL, #1271 <br /> n B Ke <br /> Prolect Man er <br /> 4051180 MPD <2> <br />