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i <br /> 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 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 SP1-(A-D)comp Received 02/05/98 <br /> San Jose, CA 95110 Matrix SOLID Extracted 02/05/98 <br /> Analysis Method EPA 8015 Mod Analyzed 02/06/98 <br /> Attention Jessica Nelligan Lab Number 9802209-01 Reported 02/10198 <br /> OC Batch Number GCO205980HBPEXB <br /> Instrument ID GCHP4B <br />' Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> 1 TEPH as Diesel 1 0 21 <br /> Chromatogram Pattern <br /> Weathered Diesel C9-C24 <br /> Surrogates Control Limits% % Recovery <br /> n-Pentacosane (C25) 50 150 93 <br /> 1 <br /> 1• <br /> 1 <br /> I <br /> 1 <br /> I <br /> I <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> 1 <br /> 01 i<_. <br /> 1 Tod Granicher <br /> Project Manager Page 4 <br /> 1 <br />