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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 /> allraoAnalytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> Pacific Environmental Group Client Prol ID 311-174 1A/BP #5447,Stockton Sampled 02/13/98 <br /> 2025 Gateway Place, Suite 440 Sample Descript PP-4 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 />' Attention Joe Muzzio Lab Number 9802686-10 Reported 03130198 <br /> QC Batch Number M-S021998MTBEEXB <br /> Instrument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/kg ug/kg <br />' Ethanol 25000 N D <br /> t-ButanDl 5000 N D <br /> Methyl t-Butyl Ether (MTBE) 100 110 <br />' Di-Isopropyl Ether (DIPS) 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 70 121 102 <br /> I <br /> I <br />' Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> I <br />' <br /> 'rod Granicher <br /> Project Manager Page is <br />