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Sequoia 1551 Industrial Road <br /> San Carlos Eos CA 94070 <br /> (650)232 9600 <br /> Analytical FAX(650)232-9612 <br /> �& www sequmalabs com <br /> 0ttler-Ryan/Geostrategies(l) Project Unocal(4) <br /> 7 Sierra Court,Suite J Project Number Former Unocal#5098& Montgmery Ward Reported <br /> bhn 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 /> 117W-22D L203015-28 Water Sampled 03/03/02 16 20 Received 03/05/02 18 25 <br /> tyrene ND 20 ug/1 1 2030017 03/08/02 03/12/02 EPA 8260E <br /> 1,1,1,2-Tetrachloroethane ND 20 " <br /> koluene <br /> 1,2,2-Tetrachloroethane ND 2 0 <br /> etrachloroethene ND 20 " <br /> ND 20 <br /> 1,2,3-Tnchlorobenzene ND 20 " <br /> 112,4-Tnchlorobenzenc ND 20 <br /> ,1,1-Trichloroethane ND 20 <br /> 1,1,2-Trichloroethane ND 20 " <br /> knchloroethene ND 20 <br /> nchlorofluorom ethane ND 50 „ <br /> .,2,3-Trichloropropane ND 20 " <br /> t2,4-Trimethylbenzene ND 20 <br /> ,:3,5-Trim ethylbenzene ND 20 <br /> inyl chloride ND 20 <br /> Total Xylenes ND 20 " <br /> ate 12-Dichloroethane-d4 989% 63-118 H <br /> gate Toluene-d8 946% 88-110 " <br /> Surrogate 4-BFB 956% 86-115 <br /> W-23S(L203015-29)Water Sampled 03/04/02 11 53 Received 03/05/02 18 25 _ _ R-05 <br /> enzene ND 1000 ug/l 500 2030023 03/14/02 03/14/02 EPA 8260B <br /> Bromobenzene ND 1000 " <br /> romoch lorom ethane ND 1000 " <br /> romodichloromethane ND 1000 " <br /> Bromoform ND 1000 <br />,romomethane ND 2500 <br /> Butylbenzene ND 1000 „ <br /> c Butylbenzene ND 1000 " <br /> Tert-butylbenzene ND 1000 <br /> tlorobcnzene <br /> rbon tetrachloride ND 1000 <br /> ND 1000 " <br /> Chloroethane ND 2500 " « <br /> Ihloroform ND 1000 <br /> hloromethane ND 2500 " <br /> -Chlorotoluene ND 1000 " <br /> 4-Chlorotoluene ND 1000 „ <br /> 1ibromochloromethane ND 1000 <br /> 2-Dibromoethane ND 1000 <br /> Dibromomethane ND 1000 <br /> i <br /> oia Analytical - San Carlos The results in this r epos t apply to the samples analyzed in accordance with the than:of <br /> custody document This analytical i eport must be reproduced in its entirety <br /> r <br /> Page 56 of 91 <br />