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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 Fete 19-20, 1993 <br /> 985 Timothy Drrve Sample Matnx Water Received Feb 24, 1993 <br /> San dose, CA 95133 Analysis Method EPA 5030/8015/8020 Reported Mar 9, 1993 <br /> Attention Glen Bennett First Sample # 3BB6107 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample <br /> Analyte Limit I D I D LD <br /> Mg/L 3BB6107 3BB6108 3666109 <br /> MW-9 MW-10 DUP <br /> Purgeable <br /> Hydrocarbons 50 290,000 N D N D <br /> Benzene 050 14,000 N D N D <br /> Toluene 050 18,000 N D N D <br /> Ethyl Benzene 050 4,700 N D N D <br /> Total Xylenes 050 36,000 N D N D <br /> Chromatogram Pattern Gas - - <br /> Quality Control Data <br /> Report Limit <br /> Multiplication Factor 400 10 1 0 <br /> Date Analyzed 3/11/93 3/1/93 3/11/93 <br /> Instrument Identnccation GCHP-6 GCHP-6 GCHP-6 <br /> Surrogate Recovery, % 98 79 92 <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 <br /> na Lee <br /> rolect Manager 3686101 6LA <2> <br />