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819 Sinker Ave Ste 8 <br /> Sequoia <br /> Sacramento,CA 95834 <br /> Analytical <br /> (916)921-9600 <br /> (&. FAX(916) 921-01 <br /> Gettler-Ryan-Dublin Project Former Unocal 5098,Stockton,CA 5212135 <br /> 6747 Sierra Caurt,Ste J Project Number NIA - Reported , <br /> Dublin CA,94568 Project Manager Deanna L Harding 12/27/02 14 14 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting -- <br /> Analyte Result Lumt Units Dilution Batch Prepared Analvzed Method Notes <br /> MW-4(8212135-05REI)Water _Sampled. 12/02/02 16 20 Received I2/05102 12.50 HT-RS <br /> Benzene 1200 so ug/l 10 2120234 12/16/02 I2/17/02 EPA 8260B <br /> Surrozate Dibromolluoromethane 91 % 70-130 <br /> Surrozate 12-DCA-d4 87% 70-130 ^ ^ ^ <br /> Surrogate Toluene-& 118% 70-130 " ^ <br /> Surrozate 4-BFB 103% 70-130 <br /> MW-5(5212135-00 Witter Sampled 12/02/02 14 10 Received 12/05/02 12.50 <br /> Tert-butyl alcohol ND 100 ug/1 1 2120173 12/11/02 12/12/02 EPA 8260B <br /> Methyl tert-butyl ether ND 2 0 " It <br /> " ^ " " <br /> Di-isopropyl ether ND 2 0 " It <br /> " " " <br /> Ethyl tent-butyl ether ND 20 " <br /> Tert=amyl methyl ether - ND 2 0 <br /> 1,2-Dichloroethane ND 2 0 " <br /> 1,2-Dibromoethane(EBB) ND 2 0 <br /> Surrogate 12-DC,4-d4 99% 60-140 ^ " <br /> Benzene 061 050 ^ <br /> Bromobenzene ND 050 <br /> Bromochloromethane ND 050 <br /> Bromodichloromethane ND 050 <br /> „ <br /> _ = Bromoform — <br /> Bromomethane ND 10 <br /> n_Butylbenzene -- --- - - --- ---ND--- - -050 - ^-- ---- „- - - -„-- - — - -� <br /> - sec-Butylbenzene ND 050 <br /> tent-Butylbenzene - - --- ND 050 - <br /> Carbon tetrachloride ND 050 <br /> Chlorobenzene ND 050 <br /> -- --Chloroethane_ _a _ _ _ -- _ _ ND-.-".`. -0 50-- <br /> Chloroform <br /> 0—Chloroform ND 050 <br /> Chloromethane ND 050 " <br /> 2-Chlorotoluene ND 050 " <br /> 4-Chlorotoluene ND 050 It " " " <br /> Dibromochloromethane ND 050 <br /> 1,2-Dibromoethane(EDB) ND 050 <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 050- <br /> Sequoia <br /> 50-Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document Unless otherwise stated, results are reported on a wet weight <br /> basis This analytical report must be reproduced in its entirety <br /> 24 of 102 <br />