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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 364-9600 • FAX (415) 364-9233 <br /> Blaine Tech Services, Inc Client Project ID Shell, 620 W Charter Way, Stockton Sampled Aug 26-27. 1993 <br /> 985 Timothy Drive Sample Matrix Water Received Aug 30, 1993 <br /> San Jose, CA 95133 Analysis Method EPA 5030/8015/8020 Reported Sep 9, 1993 <br /> Attention Jim Keller First Sample# 3HE7801 <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 D I D I D <br /> pg/L 3HE7801 3HE7802 3HE7803 3HE7805 3HE7806 3HE7807 <br /> MW-10 MW-6 MW-1 MW-3 , MW-8 MW-7 <br /> Purgeable <br /> Hydrocarbons 50 N D N D N D 3,500 11,000 2,900 <br /> Benzene 050 N D N D N D N D N D 63 <br /> Toluene 050 N D N D N D N D 140 60 <br /> Ethyl Benzene 050 N D N D N D N D 71 67 <br /> Total Xylenes 050 N D N D N D 470 2,400 260 <br /> Chromatogram Pattern Weathered weathered Gas <br /> Gas Gas <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 1 0 1 0 40 100 20 <br /> Date Analyzed 9/4/93 9/3/93 9/3/93 9/3/93 9/3/93 9/4/93 <br /> Instrument Identification GCHP-3 GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> Surrogate Recovery, % 110 81 84 82 80 119 <br /> (CC 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 /> �EQUOIA ANALYTICAL <br /> :Pe y A n ` <br /> Project a 6 3HE7801 BLA <1> <br />