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1 <br /> Sequoia 680 Chesapeake Dnve 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 /> i <br /> 1 <br /> 1 - Pacific Environmenial Group Client Prol ID 311-174 1A/BP #5447,Stockton Sampled 02/13/98 <br /> 2025 Gateway Place, Suite 440 Sample Descript PP-5 Received 02/17/98 <br /> San Jose, CA 95110 Matrix SOLID Extracted 02/20/98 <br /> Analysis Method EPA 8260 Analyzed 02/23/98 <br /> 1 Attention Joe Muzzio Lab Number 9802686-11 Reported 03J30J98 <br /> QC Batch Number MS021998MTBEEXB <br /> Instrument ID 116 <br /> 1 Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br />' ug/kg ug/kg <br /> Ethanol 25000 N D <br /> t-Butanol 5000 N D <br />' Methyll t-Butyl Ether (MTBE) 100 280 <br /> Di-Isopropyl Ether (DIPE) 100 N D <br /> Ethyl t-Butyl Ether (ETRE) 100 N D <br /> t-Amyl Methyl Ether (TAME) 100 N D <br />' Surrogates Control Limits % % Recovery <br /> 1,2-Dichloroethane-d4 70 121 109 <br />' Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> 1 <br /> l�. nLA <br />' Tod Granicher <br /> Project Manager Page 21 <br /> 1 <br />