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' Sequoia680 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 /> Analytical 819 Striker 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 GT2-A Received 02/05/988 <br /> San Jose, CA 95110 Matrix SOLID Extracted 02/06/98 <br /> Analysis Method 8015Mod/8020 Analyzed 02/10/98 <br /> Attention Jessica Nelligan Lab Number 9802211-05 reported 03J30198 <br />' OC Batch Number GCO20698BTEXEXA <br /> Instrument ID GCHP01 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br />' Analyte Detection Limit Sample Results <br /> mg/K9 mg/Kg <br />' TPPH as Gas 20 N D <br /> Methyl t-Butyl Ether 0 050 9 3 <br /> Benzene 0 Oi0 N D <br /> Toluene' Ethyl Benzene 0 010 N D0 010 N D <br /> Xylenes (Total) 0 010 N D <br /> Chromatogram Pattern <br />' Surrogates Control Limits % % Recovery <br /> Trifiuorotoluene 70 130 96 <br /> 4-Bromofluorobenzene 60 140 480 <br /> I <br /> I <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> 1 <br /> Pj <br /> Granicher <br /> ect Manager Page 9 <br /> I <br />