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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9604 FAX(650)364 9233 <br /> 404 N Wtget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue Suets 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> _ Pacific Environmental Group Client Prol ID 311-174 1A/5447, Stockton Sampled 02/24/98 <br /> 2025 Gateway Place, Suite 440 Sample Descnpt SP1-(A-B)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 98021769-01 Reported 02J26198 <br /> QC Batch Number GCO225980HBPEXC - <br /> Instrument ID GCHP5B <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br />' m9/K9 m9/K9 <br /> TEPH as Diesel 1 0 8 S <br /> Chromatogram Pattern <br />' Unidentified HC C9-C24 <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 70 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEOUDIA ANALYTICAL - ELAP #1210 <br /> od Granicher <br /> Project Manager Page 3 <br /> -- - - t0% <br />