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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364-9233 <br /> ID 404 N Wiget lane Walnut Creek CA 94598 (510) 988 9600 FAX(5 10)988 9673 <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/4707 Pacific Ave Sampled 09/25/96 <br /> i 3164 Gold Camp Drive #240 Sample Descript Eff Received 09/25/96 <br /> Rancho Cordova, CA 95670 Matrix AIR <br /> Analysis Method 8015Mod/8020 Analyzed 09/27/96 <br /> Attention Greg Gurss Lab Number 9609E95-02 Reported 09/30f96 <br /> QC Batch Number GC09279613TEX17A <br /> Instrument ID GCHP17 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ug/L. ug/L <br /> TPPH as Gas 10 15 <br /> Benzene 010 N D <br /> Toluene 010 0 13 <br /> Ethyl Benzene 010 N D <br /> Xylenes (Total) 010 1 1 <br /> Chromatogram Pattern <br /> Weathered Gas C7-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 99 <br />• <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Rregory <br /> ect Manager Page 2 <br />