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Sequoia 1553 Industrial Road <br />' San Carlos <br /> CA 94070 <br /> (650)232-9600 <br /> .Analytical FAX(650)232 9612 <br /> www sequoialabs com <br />' Gettler-Ryan/Geostrategies(1) Project Unocal(4) <br /> 7 Sierra Court,Suite.1 Project Number Former Unocal#5098&Montgmery Ward Reported <br /> Im 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 /> IW-17 L203015-20 Water Sampled 03/03/02 12 10 Received 03/05/02 18 25 <br /> tyrene ND 20 ug/l 1 2030017 03/08/02 03/12/02 EPA 8260B <br /> I,1,1,2-Tetrachloroethane ND 20lllll <br /> ,1,2,2-Tetrachloroethane ND 20 " <br /> etrachloroethene ND 20 " <br /> oluene ND 20 <br /> 1,2,3-Tnchlorobenzene ND 20 <br /> I2,4-Trichlorobenzene ND 20 <br /> ,1,I-Tnchloroethane ND 20 " <br /> 1,1,2-Tnchloroethane ND 20 " <br /> richloroethene ND 20 " <br /> richlorofluoromethane ND 50 " <br /> ,2,3-Trichloropropane ND 20 <br /> 1,2,4-Trimethylbenzene ND 20 " <br /> 13,5-Tnmethylbenzene ND 20 " <br /> 1inyl chlonde ND 20 <br /> Total Xylenes ND 20 <br /> ate 1,2-Dtchloroethane-d4 993 % 63-118 <br /> ate Toluene-d8 957 % 88-110 " « <br /> Surrogate 4-BFB 991 % 86-115 " <br /> W-1$ L203015-21 Water Sampled 03/04/02 10 15 Received 03/05/02 18 25 <br /> enzene ND 20 ug/l 1 2030017 03/08/02 03/08/02 EPA 8260B <br /> Bromobenzene ND 2 0 <br /> Iromochlorom ethane ND 2 D " <br /> romodichlorom ethane ND 20 " <br /> romoform ND 2 0 <br /> Bromomethane ND 5 0 " <br /> IButylbenzene ND 2 0 " <br /> c-Butylbenzene ND 2 0 „ <br /> Tert-butylbenzene ND 2 0 " <br /> Frbon tetrachloride ND 20 <br /> loroberizene ND 2 0 " <br /> Chloroethane ND 50 <br /> loroform ND 20 <br /> 1C1oromethanc <br /> ND 50 <br /> hlorotoluene ND 20 " <br /> 4-Chlorotoluene ND 20 " <br />... <br /> 11bromochlorom ethane ND 20 + „ <br /> -Dibromoethane ND 20 " <br /> Dibromomethane ND 20 <br /> quoia Analytical -San Carlos The results in this repoi t apply to the samples analyzed to accordance with the chain of <br /> custody document This analytical i epor t must be reproduced in its entirety <br /> .0 <br /> Page 44 of 91 <br />