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Sequoia 680 Chesapcake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364 9233 <br /> 404 N Wiget 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 /> Blaine Tech Services Client Proj ID Shell Stockton/971202-Li Sampled 12/02/97 <br />- 1680 Rogers Avenue Sample Descript Caltrans Received 12/03/97 <br />µ San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 12/09/97 <br /> Attention Fran Thie Lab Number 9712358-02 Reported 12J19J97 <br /> QC Batch Number MS120997MTBEH6A <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 /> 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 97 <br /> 0 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOI LICAL ELAP #1210 <br /> Peggy Pen <br /> Project Manager Page 4 <br />