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a + 5 <br /> 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 /> OMPDS Services Client Project ID Unocal#6015,601 East Kettleman Lane, Lodi Sampled Mar 30-31, 1994 <br /> 2401 Stanwell Dr, Ste 400 Sample Matrix Water Received Mar 31, 1994 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015/8020 Reported Apr 14, 1994 <br /> Attention Avo Avedessian First Sample# 403-1457 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I D I D I D I I D I D <br /> erg/L 403-1457 403-1458 403-1459 403-1460 403-1461 403-1462 <br /> MW 1 MW 2 MW 3 MW 4 MW 5 MW 6 <br /> Purgeable <br /> Hydrocarbons 50 N D N D N D N D N D N D <br /> Benzene 0 5 N D N D N D N D N D N D <br /> Toluene 05 ND ND ND ND ND ND <br /> Ethyl Benzene 05 N D N D N D N D N D N D <br /> 1 <br /> Total Xylenes 05 N D N D N D N D N D N D <br /> Chromatogram Pattern -- - - <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 10 10 1 0 10 10 <br /> Date Analyzed 4/6/94 4/6/94 4/6/94 4/6/94 4/6/94 4/6/94 <br /> Instrument Identification HP-4 HP-4 HP-4 HP-4 HP-4 HP-4 <br /> Surrogate Recovery, % 111 110 109 117 101 101 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N 0 were not detected above the stated reporting limit <br /> • SEQUOIA ANALYTICAL, #1271 <br /> A Iern <br /> Project Manag <br /> 4031457 MPO <1 <br />