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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 />' a_ P1Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> f <br />' Pacific Environmental Group Client Proj ID 311-174 1A/5447, Stockton Sampled 02/24/98 <br /> 2025 Gateway Place, Suite 440 Sample Descript SP2(A-C)comp Received 02/24/98 <br /> San Jose, CA 95110 Matrix SOLID Extracted 02/25/98 <br /> Analysis Method EPA 8015 Mod Analyzed 02/26/98 <br />' - Attention Jessica Nelligan Lab Number 9802F69-02 Reported 02j26198 <br /> OC Batch Number GCO225980HBPEXC <br /> Instrument ID GCHP5B <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br />' mg/Kg mg/Kg <br /> TEPH as Diesel 1 0 14 <br /> Chromatogram Pattern <br /> Weathered Diesel C9-C24 <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 78 <br /> I <br /> I <br /> I <br /> IAnalytes reported as N D were not present above the stated Itmtt of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> 'rod Granicher <br /> Project Manager Page 5 <br />