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1951 Industrial Road <br /> Sequoia Sanc(650 23 -9600 <br /> {bso)zsz-9600 <br /> r ► Analytical www <br /> 232 9612 <br /> ww sequalequoiala6s corn � <br /> Gettler-Ryan/Geostrategies(i) Project Unocal(4) <br /> 6747 Sierra Court, Suite 3 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 8260B <br /> - Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed' Method Notes <br /> MW-21D(L206021-26)Water Sampled 06/09/02 12 40 Received _06111102 18 05 <br /> 1,2-Dibromoethane ND 1 0 ug/1 1 2060023 06/14/02 0.6/14102 EPA 8260E <br /> 1,2-Dichloroethane - ND v 10 <br /> Di-isopropyl ether ND 10 <br /> Ethyl tert-butyl ether ND 10 <br /> Methyl tert-butyl ether ND 10 <br /> Tert-amyl methyl ether ND 10 <br /> Tert-butyl alcohol ND 20 " <br /> Surrogate 1,2-Dichloroethane-d4 109% 70-130 " <br /> Surrogate Toluene-d8 100% 70-130 " <br /> MW-22S(L206021-27)_Water Sampled 06/09/02 13 15 Received 06/11/02 IS 05 <br /> 1,2-Dibromoethane ND 1 0 ug/1 1 2060028 06/18/02 06/18/02 EPA 8260E <br /> 1,2-Dichloroethane - -ND 1 0 <br /> Di-isopropyl ether ND 1 0 " <br /> Ethyl tert-butyl ether ND 1 0 " <br /> Methyl tert-butyl ether s _ ND 1 0 _ W <br /> Tert-amyl methyl ether ND 1 0 <br /> 'Pert-butyl alcohol ND 20 " <br /> Sufi ogate 1,2-Dichloroethane-d4 106% 70-130 <br /> .Surrogate 1 oluene-d8 996% 70-130 <br /> =MW-221)(L206021=2S)"Water=Sampled 06109102-13 50=Received 06/11/02-1805= - <br /> 1,2-Dibromoethane ND 10 ug/i 1 2060023 06/14/02 06/14/02 EPA 82603 ,� <br /> �__,_ - <br /> 1,2-Dichioroethane-- ---_ T_ --�—-ND -- -1�0--- "�- "_ _- "-�_�" _ _—„_____ - �_” - -- -.--- <br /> Di-isopropyl ether -- , T - ND _ 1 0 -- <br /> Ethyl tert-butyl ether ND 1 0 <br /> Methyl tert-butyl ether ND 1 0 <br /> Tert-amyl methyl ether ND 1 0 <br /> "Tett-butyl alcohol ND _ - - 20- <br /> Surrogate <br /> 0"Surrogate 1,2-Dichloroethane-d4 103% 70-130 <br /> _ Surrogate Toluene-d8 _ _ 968% _ _ 70-130 " <br /> r <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 in its entirety <br /> Page 72 of 103 <br />