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- . Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> 1900 dates Avenuc,Suite L Concord CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> " Gettler Ryan%Geostrategies Client Prol ID Unocal, #6189 Sampled 10/07/94 <br /> 3035 Prospect Park Drive #80 Sample Descript Eff Received 10/07/94 <br /> Rancho Cordova, CA 95670 Matrix AIR <br /> Analysis Method 8015Mod/8020 Analyzed 10/07/94 <br /> Attention Greg Grurst Lab Number 9410391-02 Reported 10f 10/94 <br /> Instrument ID GCHP-02 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ppmv ppmv <br /> TPPH as Gas 38 ND <br /> Benzene 0 031 N D <br /> Toluene 0 027 N D <br /> Ethyl Benzene 0 023 N D <br /> Xylenes (Total) 0 023 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Tnfluorotoluene 70 130 76 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> W—r7 - <br /> add O ive <br /> Project Manager Page 2 <br />