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< < / j _ ■ Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> 1900 1,tes Avenue,Suite L Concord,CA 94520 (510) 686 9600 FAX (510) 686 9689 <br /> *,JP Analytical 819 Striker Avenue Suite Sacramento CA 95834 (916) 9219600 FAX (9t6)9210100 <br /> 19GeoStrategies Inc Client Project ID Unocal #$981 Sampled Dec 11, 1994 <br /> 3035 Prospect Park Dr, Suite 80 Sample Matrix Air Received Dec 12, 1994 <br /> Rancho Cordova, CA 95670 Analysis Method FPA 5030/8015/8020 Reported Dec 20, 1994 <br /> Attention Greg Gurss First Sample # 412-0373 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample <br /> Analyte Limit I D I D <br /> Mg/M3 412-0373 412-0374 <br /> lnf Eff <br /> Purgeable <br /> Hydrocarbons 50 4,100 74 <br /> Benzene 0 050 57 0 060 <br /> Toluene 0 050 320 1 2 <br /> Ethyl Benzene 0 050 58 1 1 <br /> Total Xylenes 0 050 220 64 <br /> Chromatogram Pattern Gasoline Gasoline <br /> C&C12 C6-C12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 200 1 0 <br /> Date Analyzed 12/13/94 12/13/94 <br /> Instrument Identification GCHP-2 GCHP-2 <br /> Surrogate Recovery, % 91 93 <br /> (OC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected at or above the reporting limit <br /> SEQUOIA ANALYTICAL, ELAP #1624 <br /> Je le Higgins <br /> Project Manager <br /> 4120373 GSI <1> <br /> 09. <br />