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1 <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) 488 9600 FAX (5 to)988 9673 <br /> Analytical 819 Strikcr 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 02/13/98 <br /> 2025 Gateway Place, Suite 440 Sample Descript PP-1 Received 02/17/98 <br /> _ San Jose, CA 95110 Matrix SOLID Extracted 02/20/98 <br /> Analysis Method EPA 8015 Mod Analyzed 02/21/98 <br />' Attention Joe Muzzio _ Lab Number 9802686-07 = Reported 03j30j98 <br /> QC-Batch Number- GCO21898GHBPEXC <br /> Instrument ID GCHPI9B <br />' Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> mg/K9 mJ/Kg <br />' TEPH as Diesel 10 12 <br /> Chromatogram Pattern <br /> Unidentified HC C9-C24 <br />' Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 94 <br /> 1 <br /> t <br />' Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> Granicher + <br /> Project Manager Page �2 <br />