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e] Sequoia 680 Chesapeake Dnve 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 /> • <br /> Gettler Ryan/Geostrategies Client Prol ID Chevron 9-6171, Stockton Sampled 07/20/97 <br /> 6747 Sierra Court Suite G Sample Descript MW-5 Received 07/22/97 <br />„l Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 07/25/97 <br /> Attention Deanna Harding Lab Number 97071337-03 Reported 07J31/97 <br /> QC Batch Number GC072597BTEX02A <br /> Instrument ID GCHP02 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Lima Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 100 300 <br /> Methyl t-Butyl Ether 5.0 57 <br /> Benzene 1 0 47 <br /> Toluene 1 0 31 <br /> Ethyl Benzene 1 0 .. 22 <br /> Xylenes (Total) 1 0 9 a <br /> Chromatogram Pattern: Gas <br /> Surrogates Control Limits % % Recovery <br /> Tnfluorotoluene 70 130 126 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> regory <br /> Pro ect Manager Page 3 <br />