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Sequoia 660 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> rY' 1 404 N Wigct 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 Descnpt GT1-B 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_ 9802212-02 Reported 02110198 <br /> QC Batch Number MS020698MTBEEXA <br /> Instrument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> rAnalyte Detection Limit Sample Results <br /> ug/k9 u9/k9 <br /> Ethanol 50000 N D <br /> t-Butanol 10000 N D <br /> Methyl t-Butyl Ether (MTBE) 200 1100 <br /> Di-Isopropyl Ether (DIPE) 200 N D <br /> Ethyl t-Butyl Ether (ETBE) 200 N D <br /> t-Amyl Methyl Ether (TAME) 200 N D <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dichloroethane-d4 70 121 84 <br /> 10) <br /> Analytes reported as N D were not present above the stated Ilrrut of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> �I <br /> VGranicher <br /> Project Manager Page 2 <br />