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I551 Industrial Road <br /> ,�''j�, Sequoia San Carim CA 94070 <br /> Analytical (650)232-9600 <br /> FAX(650)232-9612 <br /> www sequoialabs cam <br /> Gettler-Ryan/Geostrategies(l) 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 Compounds by EPA Method 8260B <br /> Sequoia Analytical - San Carlos <br /> Reporting ■ <br /> Analyte Result funit -Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-25D L206021-34 Water Sampled 06/11/02 10 30 Received 06/11/02 18 05 <br /> Styrene ND 100 ugll 50 2060034 06/24/02 06/24/02 EPA 8260E <br /> 1,1,1,2-Tetrachloroethane ND 100 " 1, 1. " " - <br /> 1,I,2,2-Tetrachloroethane ND 100 <br /> Tetrachloroethene ND 100 ^ ^ <br /> Toluene 5900 100 <br /> 1,2,3-Tnchlorobenzene ND 100 <br /> 1,2,4-Trichlorobenzene ND 100 ^ ^ <br /> 1,1,1-Trichloroethane ND 100 <br /> 1,1,2-Trichloroethane ND 100 <br /> Tnchioroethene ND 100 " ^ <br /> Trichlorofluoromethane ND 250 ^ ^ <br /> 1,2,3-Trichloropropane ND 100 <br /> 1,2,4-Trimethylbenzene 2000 100 <br /> 1,3,5-Trimethylbenzene 530 100 ^ ^ ^ it <br /> Vinyl chloride ND l00 " ^ <br /> Total Xylenes 9800 100 <br /> Surrogate 1,2-Dichloroethane-d4 106% 76-114 ^ <br /> Surrogate Toluene-d8 102% 88-110 " <br /> Surrogate 4-BFB 101 % 86-115 <br /> MW-AS26(L206021-35)Water Sampled 06/11/02 11 20 Received 06/11/02 18 05 _ <br /> Benzene ND 2 0 ug/l 1 2060034 06/21/02 06/21/02 EPA 8260B <br /> Bromobenzene ND 2 0 n <br /> Brom ochlorom ethane- - ------ -- --ND - — --- 2 0 - " " ^ It <br /> Bromodichloromethane ND - 2 0 <br /> m ^ ^ <br /> Braofarm - — — ------- - ---- _ <br /> ND - ---- --2 0 - <br /> Bromomethane ND 5 0 <br /> n-Butylbenzene ND _ 2 0 <br /> B ^ ^ <br /> sec- utylbenzene i__ - ND 2 O <br /> Ten-butylbenzene ND - 2 0 - <br /> Carbon tetrachlonde ND 2 0 " <br /> Chlorobenzene ND 2 0 <br /> Chloroethane ND 5 0 ^ , <br /> Chloroform ND 2 0 <br /> Chloromethane ND 5 0 <br /> 2-Chlorotoluene ND 2 0 " <br /> 4-Chlorotoluene ND 2 0 <br /> Dibromochloromethane ND 2 0 <br /> 1;2-Dibromoethane _ _ _ _ ____ -ND- -— ___2 0 -- <br /> Dibromomethane ND 2 0 " <br /> Sequoia Analytical - Sart Carlos The results in this report apply to the samples analyzed in accordance ivith the chain of <br /> custody document This analytical report must be reproduced to its entirety <br /> Page 60 of 103 ' <br />