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Sequoia 15511losC 94070 <br /> San Carlos 23 -960 <br /> (650)232-9600 <br /> 1W Analytical FAX <br /> (650)23WWW bscolm <br /> Gettler-Ryan/Geostrategi es(I) Project Unoca](4) <br /> 6747 Sierra Court, Suite J Project Number Former Unocal#5098, Stockton Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 07/01/02 07 46 <br /> Volatile Organic Oxygenated Compounds by EPA Method 82605 <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-12 L206021-19 Water Sampled-06/11/0_2 12 10 Received 06/11/02 18.05 -_ _ _ R-05 <br /> 1,2-Dibromoethane ND 20 ugll _2 20,6002I 06/13/02 06/13/02 EPA 8260E <br /> 1,2-Dichloroethane ND 20 <br /> " ^ <br /> Di-isopropyl ether ND 20 <br /> Ethyl tert-butyl ether ND 20 <br /> Methyl tert-butyl ether ND 20 ^ ^ ^ ^ <br /> Tert-amyl methyl ether ND 20 <br /> Tert-butyl alcohol ND 40 <br /> Surrogate 1,2-Dtchloroethane-d4 958% 70-130 " <br /> Surrogate Toluene-d8 986% 70-130 <br /> MW-13(1,206021-15)Water Sampled 06/10/02 10 50 Received 06/11/02 18 05 <br /> 12-Dibromoethane ND 10 ugll 1 2060021 06/13/02 06/14/02 EPA 8260B - <br /> 1,2-Dichloroethane" ND 10 <br /> Di-isopropyl ether ND 1 0 <br /> Ethyl tert-butyI ether ND 10 ^ <br /> Methyl tert-butyl ether 10 10 ^ ^� <br /> Tert-amyl methyl ether ND 10 " ^ <br /> Tert-butyl alcohol ND 20 " ^ <br /> Surrogate 1 2-Dtchloroethane-d4 106% 70-130 ` <br />- Surrogate Toluene-d8 101 % 70-130 " • <br />=MW=14(1,206021-16)Water=Sampled -06110/02 0945-Received-06/1l/02 18 05 — -- --- - - <br /> 1,2-Dibromoethane ND 1 0 ug/1 1 2060021 06/13/02 06/14102_EPA 826013_ <br /> 112-Dichloroethaoe T - � - ��__- ND 1 0 <br />- Di-isopropyl etherND 10 " <br /> Ethyl tent-butyl ether � - -- - - -- =ND— 1 0 --- <br /> Methyl tert-butyl ether ND 10 <br /> Tert-amyl methyl ether ND 10 ^ ^ <br />`Tent-butyl alcohol- _ _ _ w N15' <br /> Surrogate 1,2-Dichloroethane-d4 104% 70-130 " <br /> _Surrogate Toluene-d8 _ 100% 70-130 <br /> Sequoia Analytical- San Carlos The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced m its entirety <br /> Page 68 of 103 <br />