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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (650) 364-%00 FAX(659)364-9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510) 988-9673 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> low <br /> Blame Tech Services Client Proj ID Shell Stockton/971224-D1 Sampled 12/24/97 <br /> 1680 Rogers Avenue Sample Descnpt MW-13 Received 12/24/97 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method _EPA 8260 Analyzed 12/31/97 <br /> Attention Fran Thie Lab Number 9712F98-02 Reported 01 f 13198 = <br /> QC Batch Number MS123097MTBEH6A <br /> Instrument ID H6 <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 N D <br /> Dl-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-Dlchloroethane-d4 76 114 97 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA A ICAL - ELAP #1210 <br /> Peggy Penner <br /> Project Manager Page 4 <br />