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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 364-9600 • FAX(415) 3649233 <br /> Blaine Tech Services, Inc Client Project ID Shell, 620 W Charter Wy 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 9, 1993 <br /> Attention Jim Keller First Sample# 3KE3807 <br /> TOTAL PUIRGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit ID ID ID I.D. I D. I D. <br /> Mg/L 3KE3807 3KE3808 3KE3809 3KE3810 3KE3811 3KE3812 <br /> MW-5 MW-6 MW-7 MW-8 MW-9 MW-10 <br /> Purgeable <br /> Hydrocarbons 50 N D N D 16,000 6,100 72,000 N D <br /> Benzene 050 N D N D 140 N D 2,600 N D <br /> Toluene 050 N D N D 150 27 5,900 N D <br /> Ethyl Benzene 050 N D N D 270 20 1,900 N D <br /> Total Xylenes 050 N D N D 560 1,200 9,600 N D <br /> Chromatogram Pattern -- - Gas Gas Gas -- <br /> Qualdy Control Data <br /> Report Limit Multiplication Factor 10 1 0 10 10 100 1 0 <br /> Date Analyzed 12/1/93 32/1/93 12/6/93 12/6/93 12/6/93 12/6/93 <br /> Instrument Identification GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> Surrogate Recovery, % 104 106 N D 111 115 100 <br /> (OC Limits = 70-130%) <br /> Purgeabie Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N t) were not detected above the stated reporting limit <br /> SEFOUGM ANALYTICAL <br /> i <br /> �oject Manager ggy'A Penner 3KE3t301 BLA <2> <br /> Project <br />