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680 Chesapeake Drtve Redwood City,CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> Sequoia 404 N WISet 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 /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)79Z-0342 <br /> ' Gettler RyanlGeostrategies - Client Prol ID Unocal 2859, 280054 µ_ -Sampled 08/31/98 ° <br /> 6747 Sierra Court Suite J Sample Descript MW-2 Received 09/01/98 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 09/04/98 <br /> Attention Deanna Harding Lab Number 9809003-03 Reported 11JO4198 <br /> Purgeable Total Petroleum Hydrocarbons as Gasoline/BTEX/MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 10000 83000 <br /> Methyl t-Butyl Ether 500 N D <br /> Benzene 100 1000 <br /> Toluene 100 12000 <br /> Ethyl Benzene 100 4000 <br /> Xylenes (Total) 100 18000 <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trlfluorotoluene 70 130 109 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> Tod Granicher <br /> Project Manager Page 5 <br /> J?4 <br />