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1551 Industrial Road ' <br /> Sequoia Carlos A940704D—mow Analytical r (650)232-9600 <br /> FAX(650)232 9612 <br /> I H'WW 6eQn018ia55 CcoinOlh <br /> Gettler-Ryan/Geostrategles(1) Project Unocal(4) <br /> 6747 Sierra Court, Suite J Project Number Fortner Unocal 45098,Stockton Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 07/01/02 07 46 <br /> VolatileOrganic 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-1 (1,206021-02)Water Sampled 0.6/10/02 15 30 Received 06/11/02 18 05 _ <br /> Styrene ND 50 ug/l 25 2060034 06/24/02 06/24/02 EPA 8260B _ <br /> 1,1,1,2-Tetrachloroethane ND 50 TM " <br /> 1,1,2,2-Tetrachloroethane ND 5 0 <br /> Tetrachloroethene ND 5 0 <br /> Toluene 21 5 D <br /> 1,2,3-Trichlorobenzene ND 5 0 " <br /> 1,2,4-Trichlorobenzene ND 5 D <br /> 1,1,1-Trichloroethane ND 5 0 ^ " <br /> 1,1,2-Trichloroethane ND 5 0 <br /> Trichloroethene ND 5 0 <br /> Trichlorofluoromethane ND 12 ^ It <br /> 1,2,3-Trichloropropane ND 5 0 ^ " " " " , <br /> 1,2,4-Trimethylbenzene 6 0 5 0 " ^ <br /> 1,3,5-Trimethylbenzene ND 5 0 <br /> Vinyl chloride ND 15 0 <br /> u <br /> Total Xylenes 30 5 0 <br /> Surrogate 1,2-Dichloroethane-d4 103% 76-114 " <br /> Surrogate Toluene-d8 100% 88-110 O <br /> Surrogate 4-.BFB 933% 86-115 " <br /> MW-2(1,206021-03)Water Sampled 06/10/02 16 42_Received 06/11/02 18 05 <br /> Benzene 1300 36 ugtl 1786 2060034 06/24/02 06/24/02 EPA 8260B <br /> Bromobenzene _ ND. 36 <br /> Bromochloromethane - T�- - -- ` ND - T Y 36��" - <br /> _Bromodichloromethane _ __ - ______ �_ND__�__ 36_ <br /> Bromoform ND 36 " <br /> Bromomethane ND 89 " <br /> n-Butylbenzcne_ __ _ _, - - - ND - _ _ - 36 <br /> sec-Butylbenzene ND 36 <br /> Tert-butylbenzene ND 36 " <br /> Carbon tetrachloride- _ _ ND 36 <br /> Chlorobenzene ND 36 " <br /> Chloroethane ND 89 « n « « n « <br /> Chloroform ND 36 <br /> Chloromethane ND 89 <br /> 2-Chlorotoluene ND 36 <br /> 4-Chlorotoluene ND 36 <br /> Dibromochloromethane ND 36 t h " <br /> -1,2-Dibromoethane ----- -- - ---- — - - ND-- -- — -36 - <br /> Dibromomethane ND 36 <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 12 of 103 ' <br />