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Sequoia 690 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(6 50)364-9233 <br /> • 404 N Wiget Lane Walnut Creek CA 94598 (9Z5)988 9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Sucre 8 Sacramento CA 95834 (916)921-9600 FAX(916)921 0100 <br /> VJF 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792 1865 FAX(707)79Z 0342 <br /> Gettler Ryan[Geostrategles — Client Proj-ID Unocal 5886, 180137 85 -- ---- -- Sampled 06/17/98 j <br /> 6747 Sierra Court Suite J Sample Descript MW-5S Received 06/17/98 <br /> Dublin, CA 94568 Matrix LIQUID = <br /> Analysis Method 8015Mod/8020 Analyzed 06/27/98 <br /> Attention Deanna Harding _ Lab Number 9806C26-08 - Reported 07J09J98 - <br /> fC Batch Number GC062798802002A <br /> nstrument 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 /> *rPPH as Gas 50 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 0 50 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 0 50 N D <br /> •Chromatogram Pattern <br /> - Surrogates Control Limits% % Recovery <br /> Tn#luorotoluene 70 130 110 <br /> Walytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> Tgftranicher <br /> PlWt Manager Page 22 <br />