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Sequoia 680 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 SuEte 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 GT3-A 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 9802211-07 Reported 03130J98 <br /> QC Batch Number GCO2069813TEXEYA <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 /> ITPPH as Gas 10 N D <br /> Methyl t-Butyl Ether 025 24 <br /> Benzene 0 050 N D <br /> Toluene 0 050 N D <br /> Ethyl Benzene 0 050 N D <br /> Xylenes (Total) 0 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trrfluorotoluene 70 130 91 <br /> 4-Bromofluorobenzene 60 140 00 <br /> I <br /> r <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Granicher <br /> sect Manager Page i 1 <br />