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1551 lrlRoad <br /> Sequoia San Carlos <br /> os CA CA 94070 <br /> (650)232 9600 <br /> IRW Analytical FAX(650)232-9612 <br /> www sequotalabs coin <br /> ettler-Ryan/Geostrategies(I) Project Unocal(4) <br /> 7 Sierra Court,Suite J Project Number Former Unocal#F5098& Montgmery Ward Reported <br />' ublin CA,94568 Project Manager Deanna Harding 03/26/02 12 44 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> W-1 OA L203015-12 Water Sampled 03/04/02 31 00 Received 03/05/02 IS 25 <br /> tyrene ND 20 ug/l 1 2030017 03/08/02 03/08/02 EPA 8260B <br /> 1,1,1,2-Tetrachloroethane ND 20 " <br /> 11,2,2-Tetrachloroethane ND 20 " <br /> 1"etrachloroethene ND 20 <br /> Toluene ND 20 <br /> 2,3-Trichlorobenzene ND 20 " <br /> ,2,4-Tnchlorobenzene ND 20 <br /> 1,1,1-Tnchloroethane ND 20 <br /> t1,2-Trichloroethane ND 20 <br /> richloroethene ND 20 <br /> nchlorofluoromethane ND 50 <br /> 1,2,3-Trichloropropane ND 20 " <br /> 2,4-Trlmethyl benzene ND 20 <br /> ,3,5-Tnmethylbenzene ND 20 <br /> Vinyl chloride ND 20 <br /> otal Xylenes ND 20 " <br /> ate 1 2-Dtehloroethane-d4 977 % 63-118 <br /> urrogate Toluene-d8 973 % 88-110 " <br /> Curr-1 <br /> ogate 4-BFB 103 % 86-115 <br /> I L203015-13 Water Sampled 03/04/02 14 10 Received 03/05/02 18 25 <br /> Benzene 110 20 ug/1 10 2030017 03/08/02 03/13/02 EPA 8260B <br /> fromobenzene ND 20 <br /> romochloromethane ND 26 " <br /> romodichlorom ethane ND 20 <br /> Bromoform ND 20 <br /> Iromomethane ND 50 " <br /> Butylbenzcne ND 20 <br /> sec-Butylbenzene ND 20 " <br /> rt-butylbenzene ND 20 " <br /> rbon tetrachloride ND 20-Ch " <br /> lorobenzene ND 20 <br /> Chloroethane ND 54 <br /> 1loroform ND 20 „ <br /> 10rorric&anc; ND 50 <br /> 2-Chlorotoluene ND 20 <br /> Chlorotoluene ND 20 <br /> bromochloromethane ND 20 <br /> 1,2-Dibromoethane ND 20 " <br /> bromomethane ND 20 <br /> to Analytical - San Carlos The results in this i epor i apply to the samples analyzed to accordance with the chain of <br /> custody document This analytical report must be reproduced in its entu ety <br />' Page 32 of 91 <br />