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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 (925)988-9600 FAX(925)988-9673 <br /> �I 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 /> 3 Gettler Ryan[Geostrategies µ~ _ Client Prol ID ^Unocal 5886, 180137 85 --- Sampled 06/17/98 <br /> 6747 Sierra Court Suite J Sample Descript MW-4D 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 9806C26-05 Reported 07109198 <br /> QC Batch Number GC062798802002A - <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 13 <br /> Benzene 0 50 085 <br /> Toluene 0 50 082 <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 081 <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoiuene 70 130 107 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01271 <br /> aGranicher <br /> ct Manager Page 13 <br />