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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 /> tall,' Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> Pacific Environmental Group Client Prof ID 311-174 1A/BP #5447,Stockton Sampled 02/13/98 <br /> 2025 Gateway Place, Suite 440 Sample Descript PP-6 Received 02/17/98 <br /> San Jose, CA 95110 Matrix SOLIDr Extracted 02/24,/98 <br /> Attention Joe Muzzles <br /> AnalysisMethod 8015Mod/8020 Analyzed^ 02/25/98 <br /> Lab Number 9802886-12 Reported 03j30198 <br /> QC Batch Number GCO22498BTEXEXB <br /> Instrument 1D GCHP01 <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 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 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Tnfluorotoluene 70 130 84 <br /> 4-Bromofluorobenzene 60 140 91 <br /> 1 <br /> 1 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> I <br /> Tod Granicher <br /> Project Manager Page 23 <br /> I <br />