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a- )", Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792 1865 FAX(707)792 0342 <br /> • <br /> f6ettler Ryan/Geostrategies Y Client Prol ID Unocal 5886, 180137 85 Sampled 06/17/98 <br /> 6747 Sierra Court Suite J Sample Descript MW-5S Received 06/17/98 _ <br /> Dublin, CA 94558 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 06/27/98 <br /> Attention Deanna Harding _ Lab Number 9806C26-08 _ _ Reported 07f09/98 <br /> ( C Batch Number GC062798802002A - -— - - - ----- -- -- --- -- - - - - - - µ <br /> Instrument ID HP-2 <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 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 /> Surrogates Control Limits % % Recovery <br /> Trlflucrotoluene 70 130 110 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - al-AP *1271 <br /> -� �A <br /> *Granicher <br /> ct Manager Page 22 <br />