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` SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive - Redwood City, CA 94063 <br /> 4 (415) 364-9600 - FAX (415) 364-9233 <br /> Blaine Tech Services, Inc Client Project ID Shell, 141 N EI Dorado, Stockton Sampled Nov 22, 1993 <br /> 985 Timothy Drive Sample Matrix Water Received Nov 23, 1993 <br /> San Jose, CA 95133 Analysis Method EPA 5030/8015/8020 Reported Dec 3, 1993 <br /> Attention Jim Keller First Sample # 3KE5501 <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 3KE5501 3KE5502 3KE5503 3KE5504 3KE5505 3KE5506 <br /> RW-1 RW-2 MW-1 MW-2 MW-3 MW-4 <br /> Purgeable <br /> Hydrocarbons 50 N D 1,500 N D N D 30,000 77 <br /> Benzene 050 3 8 24 N D ` N D 2,300 94 <br /> Toluene 050 N D 18 N D N D 1,400 N D <br /> Ethyl Benzene 050 N D 84 N D N D 1,300 N D <br /> Total Xylenes 0 50 N D 280 N D N D 5,000 N D <br /> Chromatogram Pattern Gas -- - Gas Non-Gas Mix <br /> <C8 <br /> Oulairty Control Data <br /> Report Limit Multiplication Factor 1 0 50 1 0 1 0 50 1 0 <br /> Date Analyzed 11/24/93 11/29/93 11/29/93 11/29/93 11/29/93 11/24/93 <br /> Instrument Identification GCHP-17 GCHP-3 GCHP-3 GCHP-3 GCHP-17 GCHP-17 <br /> Surrogate Recovery, % 100 95 100 97 97 96 <br /> (OC Limits = 70-130%) <br /> Purgeabie Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> EOUDIA AALYTICAL <br /> fp6ggy A Penner <br /> Project Manager 3KE5501 BLA <I> <br />