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Sequoia 819 Stnker Ave Ste <br /> Sacramento,CA 95$1 <br /> Analytical (916)921 09600 <br /> 1W <br /> FAX(916)921 D 106 <br /> www sequotalabs coin <br /> Gettler-Ryan-Dublin Project Unocal 5098,Stockton,CA 521007 0 <br /> 6747 Sierra Court,Ste J Project Number N/A Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 10/I4/02 18 46 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting r <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-9 5210010-10 Water Sampled 09/24/02 15 14 Received 09/26/02 18 35 ' <br /> Total Xylenes 64 050 ug/i 1 2100088 10/05/02 <br /> 10/06/02 EPA 8260B <br /> QB-01 <br /> Surrogate Dzbtomofluoromethane 103 % 70-130 " <br /> Surrogate 1,2-DCA-d4 110% 70-130 " ^ <br /> Surrogate Toluene-d8 109% 70-130 " ^ <br /> Surrogate 4-BFB 105% 70-130 ^ <br /> MW-9(S21 0010-1 ORE])Water Sampled 09/24/021514 Received 09/26/02 18 35 <br /> cis-l,2-Dichloroethene ND 050' <br /> ug/1 1 2100111 10/08/02 10/08/02 EPA 82608 <br /> Trichloroethene ND 050 11 <br /> " 1, , <br /> Surrogate Dibromofluoromethane 110% 70-130 <br /> Surrogate 1,2-DCA-d4 125% 70-130 <br /> Surrogate Toluene-d8 108% 70-130 <br /> Surrogate 4-BFB 109% 70-130 <br /> MW-10 S210010-17 Water Sampled 09/24/02 16 14 Received 09/26/02 38 35 <br /> I-ethyl-2-methylbenzene 76 50 ug/l I 2100088 10/05/02 10/06/02 EPA 8260E <br /> l-ethyl-3-methylbenzene 66 50 <br /> 2-methylbutane 71 50 „ <br /> Cyclohexane 53 so „ <br /> Indane 67 50 <br /> Methylcyclopentane 11 50 <br /> —Benzene 49 0 <br /> Bromobenzene ND 050 " <br /> —Bromochloromethane - <br /> Bromodichloromethane ND 050 ^ „ <br /> Bromoform - ----- - - --- — ND-- 0 50 - - --- - -- „ - - -- - -- <br /> „ <br /> Bromomethane ND 10 <br /> n-Butylbenzene ND 050 <br /> . sec-Butv]benzene <br /> -----� - . -059-- " - 0 50 <br /> tart-Butylbenzene ND 050 <br /> Carbon tetrachloride ND 050 " <br /> IT <br /> Chlorobenzene ND 050 „ <br /> Chloroethane ND 050 <br /> Chloroform ND 050 " <br /> Chloromethane ND 050 " <br /> IT <br /> 2-Chlorotoluene ND 050 <br /> 4-Chlorotoluene ND 050 „ <br /> Dibromoehloromethane ND 050 " IT „ <br /> 1,2-Dib_romoethane(EDB) ND -0 50 <br /> Dibromomethane ND - - 050 <br /> Sequoia Analytical - Sacramento The results in this t eport apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be i eproduced in its entirety <br /> Page 45 of 119 <br />