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i <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> • 1 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> AnalyticalFAX(707)79Z-034Z 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707) 792-1865 FAX(707)792-0342 <br /> Gettler Ryan/Geostrategies "- - ClientPro] ID--""-Unocal 5886, 180137 85 - Sampled 06/17/98 " <br /> 6747 Sierra Court Suite J Sample Descript MW-413 Received 06/17/98 J <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 06/27/98 , <br /> Attention Deanna Harding Lab Number 9806C26-05 Reported 07JO9198 <br /> 4RC 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 /> TPPH as Gas 50 N D <br /> Methyl t-Butyl Ether 2 5 13 <br /> Benzene 0 50 085 <br /> Toluene 0 50 082 <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 0 50 081 <br /> *Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Tnfluorotoluene 70 130 107 <br /> • <br /> • <br /> kalytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> I• <br /> Tjoranlcher <br /> P t Manager Page 13 <br /> I� <br />