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Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (650) 364 9600 FAX(65C)364-923' <br /> 4D 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(5 10)988-9673 <br /> qQF Analytical 819 Stnker Avenue,Suite s Sacramento, CA 95834 (916) 921 9600 FAX(916)921-0100 <br /> 0 <br /> Blaine Tech Services Client Prol ID Shell Stockton 980129-S1 Sampled 01/29/98 <br /> 1680 Rogers Avenue Sample Descript MW-6 Received 01/30/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 02/06/98 <br />—W Attention Fran TI7ie Ca-IT Number-9801 H79-05 Reported-021121W8 - <br /> OC Batch Number MS020598MTBEF36 <br /> Instrument ID F3 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> Ethanol 500 N D <br /> t-Butanol 100 N D <br /> Methyl t-Butyl Ether(MTBE) 20 120 <br /> Di-Isopropyl Ether (DIPE) 20 N D <br /> Ethyl t-Butyl Ether (ETBE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limits% % Recovery <br /> 1,2-Dichloroethane-d4 76 114 103 <br /> Analytes reported as N D were present above the stated limit of detection <br /> SEQUOIA A IC L - ELAP #1210 <br /> Peggy Penner <br /> Project Manager Page 13 <br />