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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 (S l0) 988 9600 FAX(510)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 Chevron 9-6171, Stockton Sampled 08/20/95 <br /> 6747 Sierra Court Suite G Sample Descript MW-2 Received 08/22/95 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/24/95 <br /> Attention Argy Leyton Lab Number 95081"98-07 Reported 09J29J95 <br /> DC Batch Number GC082495BTEX02A _ <br /> nstrument ID GCHP02 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 350 <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 050 22 <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Unidentified HC <C9 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 96 <br /> • <br /> analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> .011111111111111 <br /> regory <br />'rolect Manager Page 13 <br />