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Sequoia 680 Chesapeake Dave Redwood City CA 94063 (650) 364 9600 FAX (650)364 9233 <br /> 1 404 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 /> Pacific Environmental Group Client Proj ID 311-174 1A/BP 5447, Stockton Sampled 02/04/98 <br /> 2025 Gateway Place, Suite 440 Sample Descript GT3-C Received 02/05/98 <br /> San Jose, CA 95110 Matrix SOLID Extracted 02/06/98 <br /> Analysis Method EPA 8260 Analyzed 02/09/98 <br /> Attention Jessica Nelligan Lab Number 9802212-07 Reported 02110198 <br /> OC Batch Number MS020698MTBEEXA <br /> Instrument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/k9 ug/kg <br /> Ethanol 25000 N D <br /> t-Butanol 5000 N D <br /> Methyl t-Butyl Ether (MTBE) 100 4900 <br /> Dr-Isopropyl Ether (DIPE) 100 N D <br />' Ethyl t-Butyl Ether (ETBE) 100 N D <br /> t-Amyl Methyl Ether (TAME) 100 N D <br /> Surrogates Control Limits% % Recovery <br /> 1,2-Dichloroethane-d4 70 121 93 <br /> r <br /> i <br /> Analytes reported as N D were not present above the stated l mit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> I <br /> rrd Grarncher <br /> oject Manager page 7 <br /> 1 <br />