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1�& Sequoia 1551 Industnal Road <br /> San Carlos CA 94020 <br /> Analytical (650)232-9600 <br /> FAX(650)232-9612 <br /> www sequoiaiabs com <br /> Fb4-7 <br /> ler-Ryan/Geostrategies(1) Project Unocal(4) <br /> Sierra Court, Suite J Project Number Former Unocal#5098, Stocktonlin CA,94568 Reported <br /> Project Manager Deanna Harding 07/01/02 07 46 <br /> Volatile organic Oxygenated Compounds by EPA Method 8260B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> nalyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> -14A L206021-17 Water Sam led 06/101021015 Received 06/11/02 18 05 <br /> Dibromoethane ND 10 ug/l 1 2060021 06/13/02 06/14/02 EPA 8260B <br /> 1,2-Dichloroethane ND 10 <br /> i-isopropylether ND 10 <br /> yl tert-butyl ether ND 1 0 <br /> thy]tert-butyl ether ND 1 0 <br /> Tert-amyl methyl ether ND 1 0 " <br /> ffil-butyl alcohol ND 20 <br /> rogate 1 2-Dichloroethane-d4 103 % 70-130 <br /> Surrogate Toluene-d8 102% 70-130 <br /> -15 L206021-IS Water Sampled 06/10/02 11 58 Received 06/11/02 18 05 <br /> , -Dibromoethane ND 1 0 ug/1 1 2060021 06/13/02 06/14/02 EPA 8260E <br /> 1,2-Dichloroethane ND 1 0 „ <br /> lisopropyl ether ND 1 0 <br /> y]tert-butyl ether ND 1 0 <br /> Methyl tert-butyl ether ND 1 0 <br /> - myl methyl ether ND 1 0 <br /> „ <br /> tyl alcohol ND 20 „ " " <br /> urrogate 1,2-Dichloroethane-d4 108% 70-130 <br /> S rogate Toluene-d8 100% 70-130 <br /> -l6 L206021-19 Water Sampled 06/11/0209 10 Received 06/11/02 18 05 <br /> 1,2-Dibromoethane ND 1 0 ug11 l 206002.1 06/13/02 06/14/02 EPA 8260B <br /> Dichloroethane 23 1 0 <br /> sopropyl ether ND 10 « <br /> Ally] tert-butyl ether ND 10 <br />✓]ethyl tert-butyl ether ND I0 <br /> -amyl methyl ether ND 10 <br /> -butyl alcohol ND 20 „ <br /> urrogate 1,2-Dichloroethane-d4 106% 70-130 •, <br /> ogate Toluene-d8 102% 70-130 ., <br /> Mom Analytical -San Carlos The results in this report <br /> apply <br /> accordance with <br /> the chain ofcustodydocument hisa lyal reportmust brep reproduced nt d <br /> Page 69 of 103 <br />