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819 Sinker Ave Ste 8 ' <br /> Sequoia Sacramento C9I <br /> (916)922 9600] 9600 <br /> Analytical FAX 921-0100 <br /> FAX <br /> sequoiequoialabs cpm r <br /> Gettler-Ryan-Dublin <br /> Project Former Unocal 5098,Stockton,CA S302592 <br /> 6747 Sierra Court,Ste 3 Project Number NIA Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 03/10/03 17 17 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> AIW-17(5302592-19RE1)Water Sampled 02/19/03 11 15 Received 02/24/03 15 30 <br /> Benzene ND 050 ug/l 1 3030025 03/04/03 03/04/03 EPA 9260B <br /> Surrogate Dibromgfluoromethane 98% 70-130 <br /> Surrogate 1,2-DCA-0 95 % 70-130 " <br /> Surrogate Toluene-d8 110% 70-130 " <br /> Surrogate 4-BFB 102% 70-130 <br /> MW-18(S302592-20)Water Sampled 02/19/03 13 10 Received 02/24/03 15 30 <br /> Tert-butyl alcohol ND 100 ug/1 1 3020415 02/28/03 02/28/03 EPA 8260B <br /> Dr-isopropyl ether ND 20 " " " " <br /> Ethyl tert-butyl ether ND 20 " <br /> Tert-amyl methyl ether ND 2 0 " <br /> 1,2-Dichloroethane ND 2 0 " <br /> 1,2-Dibromoethane(EDB) ND 2 0 <br /> Surrogate 1,2-DCA-d4 104 % 60-140 " <br /> Benzene - ISTD 050 <br /> Bromobenzenc ND 0 50 <br /> Bromochloromethane ND 0 50 " <br /> Bromodichloromethane ND 050 " <br /> Bromoform ND 0 50 " <br /> Bromomethane ND 10 <br />=n=Butylbenzene ND 0 50 - <br /> sec-Butylbenzene ND 0 50 " <br />�tert-Butylbenzene - _ — ND= ---0 50- <br />- Carbon tetrachloride ND 050 " " " 11 1. ` <br /> -Chioroberizene- --- - -- ND-- 050—-- - - - - - - --�- - «- - -- <br /> Chloroethane ND 0 50 <br /> Chloroform ND 050 " <br />—Chloromethane - _ y _ - ND _1 0 _ <br /> 2-Chiorotoluene ND 0 50 " <br /> 4-Chlorotoiuene ND 050 <br /> Dibromochloromethane - ND 0 50 " <br /> 1,2-Dibromoethane(EDB) ND 0 50 " <br /> Dibromomethane ND 050 <br /> 1,2-Dibromo-3-chloropropane ND 10 " <br /> 1,2-Dichlorobenzene ND 050 " <br /> 1,3-Dichlorobenzene ND 050 " <br /> 1,4-Dichlorobenzene ND 0 50 <br /> Dichlorodifluoromethane _ _ ND _0 50 _ <br /> 1,1-Dichloroethane ND 0 50 " <br /> 1,2-Dichloroethane ND 0 50 <br /> Sequoia Analytical - Sacramento The results in this t epos t apply to the samples analyzed in accot dance wuh the chain of <br /> custody document Unless otherwise stared tesulis are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirely <br /> Page 64 of 126 <br />