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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 (510)988-9600 FAX(510)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 /> Gettler Ryan/Geostrategles Client Pral ID Former Unocal 7#5421 Sampled 04/15/98 <br /> 6747 Sierra Court Suite J Sample Descript UX-2-15 5 Received 04/16/98 <br /> Dublin, CA 94568 Matrix SOLID Extracted 04/16/98 <br /> Analysis Method 8015Mod/8020 Analyzed 04/16/98 <br /> Attention Clyde Galantine Lab Number 9804A07-02 Reported 04/17f98 <br /> OC Batch Number GC041698BTEXEXA <br /> Instrument ID GCHP22 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 1250 10000 <br /> Methyl t-Butyl Ether 31 77 <br /> Benzene 62 120 <br /> Toluene 62 820 <br /> Ethyl Benzene 62 220 <br /> Xylenes (Total) 62 1200 <br /> Chromatogram Pattern GAS <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 120 <br /> 4-Bromofluorobenzene 60 140 20 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> "Ory <br /> olect Manager Page 2 <br /> fid' <br />