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Sequoia 680 Chesapeake Drove 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 /> fwl>I� Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> Pacific Environmental Group Client Prod ID 311-174 1A/BP 5447, Stockton Sampled 02/04/98 <br /> 2025 Gateway Place, Suite 440 Sample Descript SP1-(A-D)comp Received 02/05/98 <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 9802209-01 Reported 02110198 <br /> OC Batch Number GCO20698BTEXEXA <br /> Instrument 1D GCHP07B <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> mg/K9 m9/K9 <br /> TPPH as Gas 1 0 N <br /> Methyl t-Butyl Ether 0 025 N D <br />' Benzene <br /> Toluene 00050 N D Ethyl Benzene 00050 N D0 0050 N D <br /> Xylenes (Total) 00050 N D <br /> Chromatogram Pattern <br />' Surrogates Control Limits % % Recove <br /> Tnfluorotoluene 70 130 86 <br /> 4-Bromofluorobenzene 60 140 94 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> A IL <br /> Granicher <br /> Pd <br /> roject Manager Page 3 <br />