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Sequoia 680 Chesapeake 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 /> *("ettler-Ryan Client Project ID UNOCAL#5421 - Stockton Sampled ed Apr 21, 19986747 Sierra Court, Suite J Sample Descri t Soil, UX-8-26 Received <br /> Apr 21, 1998 <br /> Dublin, CA 94568 Analysis Method EPA 8260 Analyzed Apr 21, 1998 <br /> Attention Clyde Galantine Lab Number 804-1414 Reported Apr 22, 1998 <br /> CSC Batch Number SP0414988260EXA <br /> Instrument ID GC/MS-2 <br /> OXYGENATED COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> Ng/kg Ing/k9 <br /> Ethanol 25,000 N D <br /> t-Butanol 5,000 N D <br /> Methyl t-Butyl Ether (MTBE) 100 N D <br /> Di-Isopropyl Ether (DIPE) 100 N D <br /> Ethyl t-Butyl Ether (ETRE) 100 N D <br /> t-Amyl Methyl Ether (TAME) 100 N D <br /> Surrogates Control Limit % % Recovery <br /> 1,2-Dichloroethane-d4 50 150 95 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection Because matrix effects and/or other factors <br /> required additional sample dilution,detection limits for this sample have been raised <br /> SEQUOIA ANALYTICAL, #1271 <br /> 3Dcto7r Ala Laborat <br /> 8041413 GET <3> <br />