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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 Suitc 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br />' Pacific Environmental Group Client Prod ID 311-174 1A/5447, Stockton Sampled 02/24/98 <br /> 2025 Gateway Place, Suite 440 Sample Descnpt SP2(D-17)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 98021769-03 Reported 02126198 <br /> OC Batch Number GCO225980HBPEXC <br /> Instrument ID GCHP5A <br />' Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br />' mg/K9 mg/K9 <br /> TEPH as Diesel 20 32 <br /> Chromatogram Pattern <br />' Weathered Diesel C9-C24 <br /> Surrogates Control Limits % Recovery <br /> n-Pentacosane (C25) 50 150 135 <br /> I <br /> r <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> dltI <br /> p1od Granicher <br /> project Manager Page 7 <br /> I <br />