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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 364-9600 o FAX (415) 364-9233 <br /> Blaine Tech Services, Inc Client Project ID Shell, 141 N EI Dorado, 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 7, 1993 <br /> Attention Jim Keller First Sample # 3HES107 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample <br /> Analyte Limit I D I D 1 D. I D. <br /> dig/L 3HE8107 3HE8108 3HE8109 3HE8110 <br /> TB MW-5 MW-4 DUP <br /> Purgeable <br /> Hydrocarbons 50 N D N D 66 60 <br /> Benzene 050 N D N D 10 1 0 <br /> Toluene 050 N D 061 N D N D <br /> Ethyl Benzene 050 N D N D N D N D <br /> Total Xyienes 050 N D 052 N D N D <br /> Chromatogram Pattern - -- Discrete Discrete <br /> Peak Peak <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 1 0 10 1 0 <br /> Date Analyzed 9/1/93 9/1/93 9/1/93 9/1/93 <br /> Instrument Identification GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> Surrogate Recovery, % 97 88 108 104 <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 /> DU IA ANAL L <br /> r3er <br /> P je nag r 3HEa101 BLA <2> <br />