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Sequoia 680 Chesapeakc Drive Redwood Cty CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creck CA 94598 (510) 988 9600 FAX(510)988-9673 <br /> VQF Analytical 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Brown and Caldwell Client Project ID Arco #2093, Tracy Sampled- Nov 17, 1997 - <br /> 3480 Buskirk Avenue Sample Descnpt Water, ATR-2 Relogged Nov 19, 1997 <br /> Pleasant Hill, CA 94523 Analysis Method EPA 8260 Analyzed Dec 1, 1997 <br /> Attention Steve Misner Lab Number 711-1388 Reported Dec 4, 1997 <br /> QC Batch Number M8120197MTBEH6A Y h <br /> Instrument ID H-6 <br /> OXYGENATE COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> Fig/L Ff9/L <br /> Ethanol 500 <br /> t- utano . . . . 100 350 <br /> Methyl t-Butyl Ether .. 20 200 <br /> r-sopropy ter 20 <br /> Ethyl t-Butyl Ether (ETBE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limit % % Recovery <br /> 1,2-Dichloroethane-d4 76 114 105 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1210 <br /> Melissa A Brewer <br /> Client Services Representative <br /> 7111386 BRD <3> <br />