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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N eget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> I <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> 141W Analytica <br /> Gettler Ryan/Geostrategies~- Client Prol ID Former Unocal 2859, 280054 85 Sampled 03/ / <br /> 98 <br /> 6747 Sierra Court Suite J Sample Descript MW-7 03/06/98 <br /> Dublin, CA 94568 Matrix LIQUID ed <br /> Analysis Method 8015Mod/8020 Analyzed 03/10/98 <br /> / /98 <br /> Attention Deanna Harding _ Lab Number 9803391-08 _ ____Reported^ 03118198 <br /> DC Batch Number GC031098BTEX02A <br /> nstrument ID GCHP2 <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 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 0 50 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N DD <br /> Xylenes (Total) 050 <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 89 <br /> • <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA A ALYTICAL - ELAP #1210 <br /> gory s <br /> rolect Manager Page <br />