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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> Analytical <br /> r <br /> Gettler Ryan/Geostrategies client Prol ID Former Unocal 2859, 280054 85 -� Sampled-03/06/98 <br /> 6747 Sierra Court Suite J Sample Descnpt MW-5 Received 03/06/98 <br /> Dublin, CA 94568 Matrix LIQUID ed <br /> Analysis Method 8015Mod/8020 Analyzed 03/10/98 <br /> Attention Deanna Harding Lab Number 9803390-06 _ Rgported_03/18198 <br /> CC Batch Number GC031098STEX17A <br /> Instrument ID GCHP17 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L u9/L <br /> TPPH as Gas 50 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 050 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Tnfluorotoluene 70 130 99 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA NALYTICAL - ELAP #1210 <br /> 0 <br /> ager Page 14 <br /> *re Man <br />