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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Weget lane Walnut Creek CA 94598 (510) 988 9600 FAX (510)988 9673 <br /> �all� Analytical 819 Stnkcr Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Pacific Environmental Group Client Pro] ID- -311-174 1A/BP #5447,Stockton Sampled 02/13/98 <br />' 2025 Gateway Place, Suite 440 Sample Descnpt PD-2 Received 02/17/98 <br /> San Jose, CA 95110 Matrix SOLID Extracted 02/24/98 <br />' <br /> Analysis Method 8015Mod/8020 Analyzed 02/25/98_ Attention Joh Muzzio Lab Number 9802686-02 Reported- 03./30198 <br /> QC batch Number GCO22498BTEXEXB <br /> Instrument ID GCHP01 <br />' Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> m9/K9 m9/K9 <br />' TPPH as Gas 10 100 <br /> Methyl t-Butyl Ether 025 N D <br /> Benzene 0 050 N D <br />' Toluene 0 050 N D <br /> Ethyl Benzene 0 050 0 097 <br /> Xylenes (Total) 0 050 0 90 <br /> Chromatogram Pattern <br />' Weathered Gas C6-C12 <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 85 <br /> 4-Bromofluorobenzene 60 140 9 Q -' <br /> r <br /> 1 <br /> f <br /> IAnalytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> I <br /> od Granicher <br /> Project Manager page 3 <br /> I <br />