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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Pacific Environmental Group, Inc Client Project ID Unocal 2859, Stockton, CA Sampled Nov 6, 1996 <br /> 2025 Gateway Place, Suite 440 Sample Matrix Air Received Nov 7, 1996 <br /> San Jose, CA 95110 Analysis Method EPA 5030/8015/8020 Reported Nov 15, 1996 <br /> Attention Jessica Nefligan First Sample # 611-0276 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample <br /> Analyte Limit I D I D <br /> ,ug/L 611-0276 611-0277 <br /> INFL EFFL <br /> Furgeable <br /> Hydrocarbons 50 3,000 360 <br /> Benzene 0 050 10 6 3 <br /> Toluene 0 050 51 14 <br /> Ethyl Benzene 0 050 36 6 2 <br /> Total Xylenes 0 050 220 41 <br /> Chromatogram Pattern Gasoline Gasoline <br /> C6-C12 C6-1012 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 25 2 0 <br /> Date Analyzed 11/08/96 11/08/96 <br /> Instrument Identification GCHP-1 GCHP-1 <br /> Surrogate Recovery, % 109 125 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against afresh gasoline standard <br /> Analytes reported as N D were not detected at or above the reporting limit <br /> goEQUOIA ANALYTICAL, ELAP #1624 <br /> inda C Schneider <br /> Project Manager/Sacramento Laboratory <br /> 6110276 PEG <1> <br />