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r, <br /> r <br /> �• 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 Strlker 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)792-034Z <br /> Gettler RyanZGeostrategies _ Client Prol-IDµ Unocal 0123/1034 Central Ave Sampled 03/24%98~ <br /> J 6747 Sierra Court Suite J Sample Descript U-1 Received 03/25/98 <br /> Dublin, CA 94568 Matrix LIQUID <br />-' Analysis Method 8015Mod/8020 Analyzed 04/02/98 <br /> Attention Deanna Harding Lab Number 9803H06-02 _ Reported 04f09j98 <br /> QC Batch Number GC040298802005A <br /> Instrument ID GCHP05 <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 88 <br /> Methyl t-Butyl Ether 25 13 <br /> Benzene 050 1 6 <br /> Toluene 0 50 093 <br /> Ethyl Benzene 0 50 3 8 <br /> Xylenes (Total) 050 3 0 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 78 <br /> so <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> ory <br /> 02t Manager Page 7 <br />