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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> Sequoia 444 N Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 14 Striker <br /> McD Avenue Suite 8 Sacramento C cA 95834 (906)921-9600 FAX(707)921-4100 <br /> 1455 McDowell Blvd North Ste b Petaluma,CA 94954 (707)792-1865 FAX(707)792-Q342 <br /> • <br />-Gettler RyaniGeostrategiesµ - Client Prol ID j� UNOCAL 2859, Stockton -- _ —Sampled 06/18%98- <br />; 6747 Sierra ourt Suite J Sample Descnpt MW-2 Received 06/18/98 = <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 06/28/98 <br /> Attention Deanna Harding = _ _ _ -Lab Number–9806C89-03„ .7____„»µ„ --� _» _Reported 0711098 <br /> QC Batch Number MS062898803052A� <br /> Instrument ID MS-2 <br /> Fuel Oxygenates by 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) - .• 2.0 .. 21 <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 90 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> ranlcher <br /> Project Manager Page 7 <br />