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• Sequoia 680 Chesapeake Drive Redwood Gty,CA 9406 (650) 364 9600 FAX(650)364 9233 <br /> 41) 404 N Wigct Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> qwr Analytical 819 Striker Avenue,Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX(916)92t 0100 <br /> Gettler Ryan/Geostrategies Client Prot ID Unocal SS#0187, 280045 85 Sampled 03/09/98- <br /> 6747 Sierra Court Suite J Sample Descript U-7 Received 03/09/98 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 03/12/98 <br /> Attention Deanna Harding Lab Number 9803524-08 Reported 03118198 <br /> QC Batch Number MS031198MTBEH6B <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 (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-Dichloroethane-d4 76 114 93 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> 4eory <br /> Protect Manager <br /> Pae 5 <br /> 9 <br />