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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (650) 364 9600 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 Suit,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 02/04/98 <br /> 2025 Gateway Place, Suite 440 Sample Descript SP1-(A-D)comp Received 02/05/98 <br /> San Jose, CA 95110 Matrix SOLID <br /> Analysis Method EPA 8260 r Analyzed 02/06/98 <br /> Attention Jessica Nelligan Lab Number 9802209-01 Reported 02f 10j98 <br />' <br /> QC Batch Number MS0205988260F2A <br /> Instrument ID F2 <br />' Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/k9 ug/k9 <br />' Ethanol 25000 N D <br /> t-Butanol 5000 N D <br /> Methyl t-Butyl Ether (MTBE) 100 N D <br />' Di-lsopropyl 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 98 <br /> 1• <br /> 1 <br /> 1 <br /> 1 <br />' Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> 1 <br /> d Grarncher <br />' Project Manager Page 2 <br /> 1 <br />