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Sequoia 1551 lndulval Road <br /> San Carlos C."94070 <br /> 4D 960 , <br /> {650}232 9610 <br /> Analytical <br /> FAX{650}232 9612 <br /> www sequoialabs com ' <br /> Gettler-Ryan/Geostrategies(l) Project Unocal(4) <br /> 6747 Sierra Court,Suite 3 Prosect 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 826013 <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte - Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-1 (L203015-02)Water Sampled 03/05/02 12 15 Received 03/05/02 18 25 <br /> Styrene ND 170 ug/l 83 33 2030017 03/08/02 03/13/02 EPA 8260E <br /> 1,1,1,2-Tetrachloroethane ND 176 " <br /> 1,1,2,2-Tetrachloroethane ND 170 <br /> Tetrachloroethene ND 170 <br /> Toluene ND 170 <br /> 1,2,3-Trichlorobenzene ND 170 <br /> 1,2,4-Trichlorobenzene ND 170 <br /> I,1,1-Trichloroethane ND 170 <br /> 1,1,2-Tnchloroethane ND 170 <br /> Trichloroethene ND 170 <br /> Tnchlorofluoromethane ND 420 <br /> 1,2,3-Tnchloropropane ND 170 <br /> 1,2,4-Tnmethylbenzene ND - 170 <br /> 1,3,5-Trim ethyl benzene ND 170 <br /> Vinyl chloride ND 170 <br /> Total Xylenes 400 170 „ <br /> Surrogate 1,2-Dichloroethane-d4 106% 63-118 " <br /> Surrogate Toluene-d8 100% 88-110 " <br /> Surrogate 4-BFB 104% 86-115 " <br /> }11W-2 L203015-03 Water Sampled 03/05/02 13 15 Received 03/05/02 18 25 <br /> Benzene =1800 170ug11 83 33-2030017-03108102-03113102 EPA 8260B <br /> Bromobenzene ND 170 <br /> —Bromochloromethane=-- T <br /> _ r---ND�r _ 170�_,,F_r_ „ = <br /> Bromodichloromethane ND 170 <br /> - Bromoform - -- - -- _—ND_Y= - ]70 � --- „ --- - _- -- - - --- - --- _� <br /> Bromomethane ND 420 „ <br /> n-Butylbcnzene ND 170 <br /> sec-Butylbenzene-- - . _ _ y _ _ -- -ND-- 170 <br /> Tert-butylbenzene ND 170 <br /> Carbon tetrachloride ND 170 <br /> Chlorobenzene ND 170 <br /> Chloroethane ND 420 <br /> Chloroform ND 170 <br /> Chloromethane ND 420 „ <br /> 2-Cblorotoluene ND 170 <br /> 4-Chlorotoluene ND 170 <br /> Dibromochloromethane ND 170 <br /> 1,2-Dibromoethane - - - -- -- ND _ 170 <br /> Drbromomethane ND 170 <br /> Sequoia Analytical -San Carlos The results in this i epo,t apply to the samples analyzed to accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 17 of 91 <br />