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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364-9233 <br /> 1900 Sates Avenue Suite L Concord CA 94520 (510) 686 9600 FAX(5 10)686 9689 <br /> 819 Sinker Avenue Suite B Sacramento CA 95834 (916) 921 9600 FAX(916)921 Ot00 <br /> Analytical <br /> Blaine Tech Services, Inc Client Project 1D 940510-A2, Shell, 141 N El Dorado Sampled May 10, 1994 <br /> 985 Timothy Drive Sample Matrix Water Received May 11, 1994 <br /> San Jose, CA 95133 Analysis Method EPA 5030/8015 Mod /8020 Reported May 23, 1994 <br /> Attention Jim Keller First Sample# 4E73907 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample <br /> Analyte Limit I ❑ ID I D I D <br /> Mcg/L 4E73907 4E73908 4E73909 4E73910 <br /> MW-5 DUP EB TRIP <br /> Purgeable <br /> Hydrocarbons 50 N D 850 N D N D <br /> Benzene 050 N D 13 N D N D <br /> Toluene 050 N D 6 8 N D N D <br /> Ethyl Benzene 050 N D 53 N D N D <br /> Total Xylenes 050 N D 120 N D N D <br /> Chromatogram Pattern C8-C12 -- -- <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 5 0 1 0 1 0 <br /> Date Analyzed 5/15/94 5/15/94 5/14/94 5/15/94 <br /> Instrument Identification GCHP-17 GCHP-2 GCHP-3 GCHP-3 <br /> Surrogate Recovery, % 93 91 80 85 <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 /> OEQUOIA ANALYTICAL <br /> Suzanne Chin <br /> Project Manager 4E73901 BLA <2> <br />