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r ` <br /> Sequoia 404 .CA `ane <br /> Walnut Creek,CA 94598 <br /> • _ _ _ _ (925)988-96W- <br /> Analytical FAX(M)98&9673 <br /> w� <br /> Gettler-Ryan - Dublin h v ` k ` Client Project Ib Unocal Circlle IC SS#1205; Lathrop' 'Sampled ' ,lul° 16;1999 i <br /> 6747 Sierra Court, Suite J Sample Descnpt Water, MW-4* Received Jul 16, 1999 <br /> Dublin, CA 94568 Analysis Method EPA 8260 Analyzed Jul 31, 1999 <br /> Attention Deanna Harding Lab Number 907-1252 Reported Aug 3, 1999, <br /> OXYGENATED COMPOUNDS (EPA 8260)- - — - <br /> Analyte Detection Limit Sample Results <br /> Ng/L Ng/L - <br /> t <br /> Ethanol 500 N D <br /> t-Butanol 100 .: N D <br /> Methyl t-Butyl Ether (MTBE) 20 ` N D <br /> Di-lsopropyl Ether (DIPE) 20 N D <br /> Ethyl t-Butyl Ether(ETBE) 20 N D <br /> t-Amyl Methyf Ether (TAME) 20 N D <br /> Surrogates Control Limit% %Recovery <br /> Dibromofluoromethane '50 150 86 <br /> 1,2-Dichlaroethane-d4 50 150 78 <br /> , <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 Please Note <br /> ' Analyzed past holding time by 59 min <br /> ri <br /> nne Fe( <br /> Project Manager - — - — <br /> 9071248 GET <5> <br />