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Sequoia t55llndustnalRoa <br /> San Carlos CA 9407p� <br /> Analytical FAX(650)232-9600 <br /> KI) {650}232-9612 <br /> www sequwalabs co <br /> Gettler-Ryan/Geostrategies(l) Project Unocal(4) <br /> 6747 Sierra Court,Suite J Project Number Former Unocal#5098 &Montgmery Ward Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 03/26/02 12 44 <br /> Volatile Organic Compounds by EPA Method 8260E <br /> Sequoia Analytical - San Carlos r <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method ]Votes <br /> MW-5 L203015-06 Water Sampled 03/05/02 11 06 Received 03/05/02 l8 25 <br /> Styrene ND 2 0 ug/l 1 2030017 03108/02 y 03/08/02 EPA 8260B <br /> 1,1,1,2-Tetrachloroethane ND = 20 <br /> 1,1,2,2-Tetrachloroethane ND 20 <br /> Tetrachloroethene ND 20 „ <br /> Toluene ND 2 0 " <br /> 1,2,3-Tnchlorobenzene ND 2 0 <br /> 1,2,4-Tnehlorobenzene ND 20 <br /> 1,1,1-Trichloroethane ND 20 <br /> 1,1,2-Trichloroethane ND 20 <br /> Trichloroethene ND 2 0 <br /> Trichlorofluoromethane ND 5 Q <br /> 1,2,3-Trichloropropane ND 2 0 „ <br /> 1,2,4-Trim ethyl benzene ND - 2 0 <br /> 1,3,5-Trimethylbenzene ND 2 0 <br /> Vinyl chloride ND 2 0 „ <br /> Total Xylenes ND 2 6 <br /> Surrogate 1,2-Dichloroethane-d4 96 6% 63-118 <br /> Surrogate Toluene-d8 100% 88.110 „ <br /> Surrogate 4-BFB 103% 86-115 „ <br /> 11IW-6 1-203015-07 Water Sam led 03/05/02 11 00 Received 03/05/02 18 25 a <br /> Benzene-- ND 2 0 ug/l 1 2030417 03/08/02 03/08/02 EPA 8260B <br /> Bromobenzene ND 2 0 <br /> --Bromochloromethane _-- - - - ---ND - =2 0-- -„ --- -------- - --- -- -- _ --- <br /> Bromodichlorom ethane ND 2 0 „ <br /> Bromoform - -ND--- -- 2 ------ �- - - - s-- -- - - -- — ----- --- - <br /> Bromomethane ND 5 0 „ <br /> n-Butyibenzene ND 2 0 <br /> —sec-Butylbenzene-----z.. - _ - -ND- �_ --2 0-- <br /> Tert-butylbenzene ND 2 0 „ <br /> Carbon tetrachloride ND 2 0 <br /> ChlorobenzeneND 2 0 <br /> Chloroethane ND 5 0 <br /> Chloroform ND 2 0 " <br /> Chloromethane ND 5 4 <br /> 2-Chlorotoluene ND 2 0 „ <br /> 4-Chlorotoluene ND 2 0 <br /> Dibromochloromethane ND 2 0 „ <br /> 1,2-Dibromoethane - - - - - ND-- - --20 - <br /> Dibromomethane ND 2 0 <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 entrrety ' <br /> Page 23 of 91 <br />