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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX (650)364 9233 <br />' 404 N Wiget Cane Walnut Creek CA 94598 (5W) 988 9600 FAX (510)988 9673 <br /> Analytical 819", <br /> Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br />' Pacific Environmental Group Client Prol iD 311-174 1A/BP 5447, Stockton Sampled 02/04/98 <br /> 2025 Gateway Place, Suite 440 Sample Descript SP2-(A-D)comp Received 02/05/98 <br /> San Jose, CA 95110 Matrix SOLID Extracted 02/06/98 <br /> Analysis Method 8015Mod/8020 r Analyzed 02/06/98 <br /> Attention Jessica Nelligan Lab Number 9802209-02 Reported 02f10198 <br /> OC Batch Number GCO20698BTEXEXA <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 1 0 71 <br /> Methyl t-Butyl Ether 0 025 031 <br /> Benzene 00050 0 012 <br />' Toluene 00050 0 013 <br /> Ethyl Benzene 00050 0 012 <br /> Xylenes (Total) 00050 0 097 <br /> Chromatogram Pattern GAS <br />' Surrogates Control Limits% % Recovery <br /> Tnfluorotoluene 70 130 98 <br /> Bromofluorobenzene 60 140 97 <br /> 1 <br />' Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Tod Granicher <br /> Project Manager Page 6 <br />