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' Sequoia 1 nal Road <br /> Sann Carlos <br /> CA 94070 <br /> (650)232 9600 <br /> ' ► Analytical FAX(650)232-9612 <br /> www sequoialabs com <br /> j7Sierra <br /> ler-Ryan/Geostrategies(I) Project Unocal(4)Court,Suite J Project plumber Former Unocal#5098 &Montgmery Ward Reported <br /> lin 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 /> Reportmg <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> W-19113 L203015-24 Water Sampled 03/04/02 14 30 Received 03/05/0218 25 R-05 <br /> tyrene ND 10 ug/1 5 2030023 03/14/02 03/14/02 EPA 8260B <br /> 1,1,1,2-Tetrachloroethane ND 10 " <br /> a,1,2,2-Tetrachloroethane ND 10 „ <br /> etrachloroethene ND 10 <br /> Toluene ND 10 " <br /> "I, <br /> 2,3-Tnchlorobenzene ND 102,4-Tnchlorobenzene ND 10 <br /> 1 Tnchloroethane ND 10 <br /> 1,1,2-Trichloroethane ND 10 <br /> ichloroetbene ND 10 " <br /> ichlorofluoromethane ND 25 <br /> 1,2,3-Tnchloropropane ND 10 <br /> O2,4-Trimethylbenzene ND 10 <br /> 3,5-Trimethylbenzene ND 10 <br /> inyl chloride ND 10 " <br /> Total Xylenes ND 10 " " + , „ <br /> ate 1,2-Dtchloroethane-d4 90 0% 63-118 _ _ <br /> gate Toluene-d8 102 % 88-110 '_ __ . <br /> Surrogate 4-BFB 104% 86-115 <br />§W-21S L203015-25)Water Sampled 03/03/02 12 45 Received 03/05/02 18 25 <br /> Wnzene ND 2 0 ug/l 1 2030017 03/08/02 03/12/02 EPA 8260E <br /> Bromobenzene ND 2 0 " " 11 „ „ <br /> tomochloromethane ND 2 0 <br /> omodichloromethane ND 2 0 " <br /> Bromoform ND 2 0 <br /> omomethane ND 5 0 " <br /> utylbenzene ND 2 0 " <br /> sec-Butylbenzene ND 2 0 <br /> Tert-butyl benzene ND 2 0 <br /> lrbon tetrachloride ND 20 <br /> lorobenzene ND 2 0 <br /> Chloroethane ND 5 0 <br /> loroform ND 2 0 <br /> loromethane ND 5 0 " <br /> 2-Chlorotoluene ND 2 0 <br />&Chlorotoluene ND 2 0 <br /> bromochloromethane ND 2 0 <br /> -Dtbromoethane ND 2 0 <br /> Dibromomethane ND 20 " <br /> a Analytical - San Carlos The i esulls in this repo t apply to the samples analvzed in accordance with the chain of <br /> custody document This analytical i eport must be reproduced in its entirety <br /> 1 <br />' Page 50 of 91 <br />