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680 Chesapeake Drive Redwood Csty CA 94063 (650)364-9600 FAX(650)364 9233 <br /> Sequoia 404 N Wlget Lane Walnut Creek CA 94598 (510)988-9600 FAX(510)988 9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921 9100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)92 0342 <br /> Blaine Tech Services _ Client Proj ID Shell 6131 Pacific Ave Sampled 05/20/98 <br /> 1680 Rogers Avenue Sample Descrlpt MW-5 Received 05/22/98 <br /> " San Jose,-CA 95112 Matrix LIQUID - _ <br /> Analysis Method EPA 8260 Analyzed 05/29/98 _ <br /> Attention Fran Thie - _ Lab Number 9805F44-05 _ - Reported 06111J98_ <br /> QC Batch Number MS052998MTBEH6A µ <br /> instrument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> --Analyte — ---------�---- ��� - --- ---Detection Limit---- ______Sample Results_ <br /> ug/L ug/L <br /> t-Butanol 100 ND <br /> Methyl t-Butyl Ether (MTBE) 20 N D <br /> Di-Isopropyl Ether (DIPS) 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-Dlchloroethane-d4 76 114 103 <br /> Analytes reported as N were not present above the stated limit of detection <br /> SEQU A AL ICAL - ELAP #1210 <br /> Peggy Pe r <br /> Project Manager Page <br />