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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-0233 <br /> 404 N Wtget lane Walnut Creek CA 94598 (510)988-9600 FAX(510)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)792-0342 <br /> Gettler Ryan Geostrategies Client Prol ID Unocal 5421, Stockton Sampled 04/16/98 <br /> 6747 Sierra Court Suite J Sample Descnpt US-4 Comp Received 04/17/98 <br /> Dublin, CA 94568 Matrix SOLID Extracted 04/24/98 <br /> Analysis Method 8015Mod/8020 Analyzed 04/24/98 <br /> Attention Clyde Galantine Lab Number 98041392-04 Reported 05/01J98 <br /> QC Batch Number SP0424988020EXA <br /> Instrument ID GCHPO4 <br /> Total Purgeable Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 10 N D <br /> Methyl t-Butyl Ether 0 025 N D <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) 00050 0 026 <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 98 <br /> 4-Bromofluorobenzene 60 140 D <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA AN "CAL - ELAP #1271 <br /> e ory <br /> rofec Manager page g <br />