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• 1551 Industrial Road <br /> San Carlos,CA 94070-4111 <br /> Sequoia (650)232-9600 <br /> Q <br /> FAX(650)232-9612 <br /> Analytical Www sequolalabs coin <br /> Gettler-Ryan/Geostrategies(1) Project Unocal(1) Sampled. 8131100 to 9/1/00 <br /> 6747 Sierra Court,Suite J Project Number Former Unocal SS#(0187) Received 9/l/00 <br /> Dublin,CA 94568 Prol ect Manager Deanna Harding Reported 9/18100 <br /> Volatile Organic Oxygenated Compounds by EPA Method 8260B <br /> Sequoia Analytical-San Carlos <br /> Batch Date Date Surrogate Reporting <br /> Anal Number Prepared Analyzed Lints Lunrt Result Units Notes <br /> U-5(continued) 1009012-06 Water <br /> Tert-amyl methyl ether 0090034 917100 917100 200 ND ug/l <br /> Surrogate 1,2-Dtchloroethane-d4 IF 0-114 102 % <br /> U-6 L009012-07 Water <br /> Ethanol 0090034 9/7100 9/7100 1000 ND ug/l <br /> 100 ND " <br /> Tert-butyl alcohol tt 200" " ND " <br /> Methyl teat-butyl ether „ 2 00 ND " <br /> Di-isopropyl ether " " 200 ND , <br /> Ethyl tat-butyl ether " " „ 200 ND " <br /> Tert-amyl methyl ether " " o <br /> Surrogate 1,2-Dichloroethane-d4 76 0-114 !01 /o <br /> LOO"12-09 Wstgr <br /> *01 0090034 917100 917100 1000 ND ug/1 <br /> , 100 ND " <br /> Teat-butyl alcohol " <br /> Methyl tent bury)ether " 2 pp ND <br /> Di-isopropyl ether " " 2 00 ND " <br /> Ethyl test-butyl ether " 200 NDIf <br /> _ <br /> Tat-amyl methyl ether " 982 % <br /> Surrogate 1,2 Dechloroethane-d4 76 0-114 <br /> U-0 L009012-09 Water <br /> Ethanol 0090034 917100 917100 100 ND ug/l <br /> 1 <br /> Tert-butyl alcohol 2 00 ND <br /> n 100 ND <br /> Methyl tent-butyl ether " " 2 00 ND " <br /> Di-isopropyl ether " <br /> Ethyl tat-butyl ether ,t 200 ND <br /> 2 00 ND " <br /> Tert-amyl methyl ether TO <br /> Surrogate 1,2-Dichloroethane-d4 76 0-114 986 % <br /> L009012-10 Water <br /> Ethanol 0090034 9/7/00 917%001000 ND ugll <br /> 100 ND <br /> Tert-butyl alcohol 200 ND <br /> n <br /> Methyl tert-butyl ether If 200 ND " <br /> Di-isopropyl ether " " " <br /> Ethyl tert-butyl ether " ,t 200 ND " <br /> Tert-amyl methyl ether " " " 760-114 976 % <br /> Surrogate 1,2-Dichloroethane-d4 <br /> L4)02012-11 Water <br /> Wol 0090034 917100 9/7100 1000 ND ug/l <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definitions <br /> Page 8 of l9 <br /> ,mak <br />