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680 Chesapeake Drive Redwood City. CA 94005 (650) 364-9600 FAX (650) 3649233 <br /> ® Sequoia 404 N. Wlget Lane Walnut Creek, CA 94598 (925) 988-9600 FAX (925) 988-9673 <br /> 819 Striker Avenue, Suite 8 Sacramento, CA 95834 (916) 921 -9600 FAX (916) 921 -0100 <br /> Analytical 1455 McDowell Blvd. North, Ste. D Petaluma, CA 94954 (707) 792- 1865 FAX (707) 792-0342 <br /> 1551 Industrial Road San Carlos, CA 94070,4111 (650) 232-9600 FAX (650) 732-9612 <br /> Gettler-Ryan - Dublin Client Project ID . Unocal SS#8671 , Stockton ' Sampled : May 14, 1999 <br /> 6747 Sierra Court, Suite J Sample Descript: Water, MW-3 Received : May 14, 1999`: <br /> Dublin, CA 94568 Analysis Method : EPA 8260 Analyzed : May 27, 1999 <br /> Attention: Deanna Harding Lab Number: 905-1320 Reported: Jun 4, 19992 <br /> OXYGENATED COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> Yg/L Ng/L <br />'r <br /> Ethanol. .. . . ...... .. .. . .... ... .. . . ....... . . .... ... ......... . . . . .. .. . . ... .. .. .. ... . . . . 500 N. D. <br /> it-Butanol. . . ... . ... .. ... ....... .... ... ..... . . . .. .. . . .. .. . ..a ... . ... . . . . . . .. . . .. .. . . . . 100 N. D. <br /> mammal <br /> Methyl t-Butyl ter 2.0 . .. . ..........4, 3.8 <br /> Di-Isopropyl ter . . .. . . .. ... . . . . ....... .... . .... . . .. . .. . . . . . .. . .. . 2.0 . 0 .. 0440 . .01 . 0 ... .. 0 . ... 00 . .. 90 .. 0 .00 <br /> Ethyl t-Butyl Ether (ETBE) . . . . . .. .. . . . . ... . . .. . . .. . .. . . . . . . . .. . . . . . . . . . . . . . 2.0 . . .. . . .. . . . . . . ... .. . . . . . . . . .. . . . . . . . . N. D. <br /> t-Amyl Methyl Ether (TAME) . " . . . . ,. " . . ... 01 , 111 , 11 , . . . . . . . . . . . . . . 2.0 . . . . . . . . . . . . . . . . . . . . . . a . . . . . .. . .. . . . . N. D. <br /> Surrogates Control Limit % % Recovery <br /> D lbromofl uoromethane. . . . .. . .. . . . . . . . . . . . . . . . . . . . . . . . . .. .. . . . . . . . . . . . . . .. . 50 150. . . . . . . . . . . ..a . . . . . . . . .. . . . . .. . . . . . . . 97 <br /> 1 ,2-D ichl oroethane-d4. . ... . . ... . . . . . . . .. .. .. . . . . . . .. . . . . . . . . . . . . . . . . . . . . .. . 50 150. . . . . . . . . . . . . . I . . . . . . . . . . . . . ... . . . ... 92 <br /> Analytes reported as N.D. were not present above the stated limit of detection. <br /> SEQUOIA ANALYTICAL, #1271y <br /> ulianne <br /> Fegleyeg <br /> Project Manager <br /> 9051317.GET < 4 > <br />