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v' Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> (D 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 /> Gettler RyaniGeostrategles Client Prol ID Chevron 9-6171, Stockton - Sampled 07/20/97 <br /> 6747 Sierra ourt Suite G Sample Descript MW-3 Received 07/22/97 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 07/24/97 <br /> Attention Deanna Harding Lab Number 97071337-05 Reported 07f31197 <br />)C Batch Number GC072497BTEX03A _ - <br /> nstrument ID GCHP03 <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 .. 5o 120 <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 050 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Discrete Peak .. C7-C8 <br /> Surrogates Control Limits % % Recovery <br /> Tnfluorotoluene 70 130 90 <br /> nalytes reported as N D were not present above the stated limit of detection <br />'EQUOIA ANALYTICAL - ELAP #1210 <br /> ii ory <br />'rojeM Manager Page 5 <br />