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L SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 34063 <br /> IWO (415) 364-9600 s FAX(415) 364-9233 <br /> Blaine Tech Services, Inc Client Protect ID Shell, 141 N EI Dorado Sampled May 26, 1993 <br /> 985 Timothy Drive Sample Matrix Water Received May 27, 1993 <br /> San Jose, CA 95133 Analysis Method EPA 5030/8015/8020 Reported Jun 4, 1993 <br /> Attention Jim Keller First Sample# 3EC3307 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample <br /> Analyte Limit ID ID I D. <br /> Mg/f_ 3EC3307 3EC3308 3EC3309 <br /> MW-3 DUP TB <br /> Purgeable <br /> Hydrocarbons 50 47,000 N D N D <br /> Benzene 050 1,800 N D N D <br /> Toluene 050 8,300 N D N D <br /> Ethyl Benzene 050 2,200 N D N D <br /> Total Xylenes 050 9,500 N D N D <br /> Chromatogram Pattern Gas -- <br /> Qualdy Control Data <br /> Report Limit Multiplication Factor 200 1 0 1 0 <br /> Date Analyzed 6/2/93 6/2/93 6/1/93 <br /> Instrument Identification GCHP-2 GCHP-3 GCHP-2 <br /> Surrogate Recovery, % 97 82 99 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N 0 were not detected above the stated reporting limit <br /> SEQuaiA-4NALYTI L <br /> m i <br /> Pr Q Hager 3EC3301 BlA <2> <br />