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1553 Industrial Road <br /> (D (650)Sequoia San Carlos CA 94070 <br /> �w Analytical 232-9600 <br /> FAX(650)232_9612 <br /> www sequotalabs corn <br /> Getiler-Ryan/Geostrategtes(1) Project Tosco(1) <br /> 6747 Sierra Court, Suite J Project Number Tosco(Former BP) SS#11192 Stockton Reported <br /> Dublin CA 94568 Project Manager Deanna Harding 11/21101 13 29 <br /> Total Purgeable Hydrocarbon (C6-C12) by EPA 8015M and BTEXIMTBE by EPA 8021B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-7(L111063-07)Water Sampled 11/09/01 17 25 Received 11/09/01 1935 <br /> Purgeable Hydrocarbons as Gasoline ND 5000 ug/l 100 1110066. 11/16/01 11/16/01 EPA 80215 <br /> Benzene ND 50 <br /> Toluene ND 50 <br /> Ethylbenzene ND 50 <br /> Xylenes(total) ND 50 <br /> Methyl tert-butyl ether 120000 5000 1000 11/19/01 M-04 <br /> Surrogate a aa-Tri luorotoluene 896% 70-130 11/16101 " <br /> MW-8(L1 1 1 063-08)Water Sampled 11/09/01 11 05 Received 1.1/09/01 19_35 <br /> Purgeable Hydrocarbons as Gasoline ND 50 ugll 1 1110072 11/19/01 11/19/01 EPA 80218 <br /> Benzene ND 050 " " ^ <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 <br /> Methyl ten-butyl ether ND 5 0 <br /> .Surrogate a,a,a-Trifluorololuene 929% 70-130 " <br /> MAY-9(L1 1 1 063-09)Water Sampled 11/09/01 11 50 Received 11/09/01 19 35 <br /> ible Hydrocarbons as Gasoline ND 50 ug/I 1 1110072 11/19/01 11/19/01 EPA 8021B <br /> i i,nzene ND 050 <br /> Toluene ND 050 <br /> Ethylbenzene ND 0 50 " ^ <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether 16 50 <br /> Surrogate a a,a-Trri luorotoluene 856% 70-130 " <br /> Sequoia Analytical - San Carlos The results to this report apply to the samples analyzed in accordance with the chain <br /> custody document Thrs analytical report must be reproduced to its entirety <br /> Page 4 of 19 <br />