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' Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> � 1 404 N Wtget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> jj%,,,� Analytical 819 Striker Avenue Suite a Sacramento CA 95834 (916) 921 9600 FAX(916) 921 woo <br /> PaCific Environmental Group - Client Prod ID 311-174 1A/BP#5447, Stockton Sampled 02/13/98 <br />' 2025 Gateway Place, Suite 440 Sample Descnpt PD-4@12 Received 02/17/98 <br /> San Jose, CA 95110 Matrix SOLID Extracted 02/19/98 <br /> Analysis Method 8015Mod/8020 Analyzed 02/19/98 <br /> Attention Joe Muzzio Lab Number 9802947-01 Reported 02J19198 <br /> QC Batch Number GCO21998BTEXEXA <br /> Instrument ID 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 100 240 <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene <br /> Toluene 0 5D' N D Ethyl Benzene _ 0 50 N D <br /> 050 0 95 <br /> Xylenes (Total) 050 12 <br /> Chromatogram Pattern <br /> Unidentified HC >C10 <br /> t Surrogates Control Limits % % Recov <br /> Trifluorotoluene e <br /> 7D 130 g� <br /> 4-Bromofluorobenzene 60 140 30 - <br /> 1 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Wrod Granicher <br /> �ect Manager Page 2 <br /> I <br />