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1$51 lndustnal Road <br /> Sequoia San Carlos CA 94070 <br /> (650)232-9600 <br /> iW Analytical FAX(650)232-9612 <br /> www sequolalabs corn <br /> er-RyanlGeostrategies(I) Project Tosco(l) <br /> Sierra Court,Suite J Project Number Tosco(Unocal)SS#6981, Stockton,CA Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 12/27/0109 39 <br /> Total Purgeable Hydrocarbon (C6-C12) by EPA 8015M and BTEX/MTBE by EPA 8021B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-1 (LI 12085-13)Water Sampled 12/13/01 10 45 Received 12/13/01 19 40 <br /> Purgeable Hydrocarbons as Gasoline 240 50 ugA 1 1120080 12/20/01 12/20/01 EPA 8021B P-03 <br /> Benzene 1.3 050 <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 ^ <br /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether ND 5 0 <br /> Surrogate a,a,a-Trifluorotoluene 899% 70-130 " <br /> MW-2 (LI 12085-14)Water Sampled 12/13/01 11 40 Received 12/13/01 19 40 <br /> Purgeable Hydrocarbons as Gasoline 700 200 ug/l 4 1120080 12/20/01 12/20/01 EPA 8021B P-01 <br /> Benzene 77 2 0 <br /> Toluene ND 2 0 " <br /> Ethylbenzene ND 2 0 " <br /> Xylenes(total) 23 2 0 " <br /> Methyl tert-butyl ether 75 20 " <br /> V-7 ate a,a,a-Triuorotoluene 105% 70-130 " <br /> (Ll 12085-15)Water Sampled 12/13/01 09 55 Received 12/13/01 19 40 <br /> Purgeable Hydrocarbons as Gasohne ND 50 ugll 1 1120080 12/20/01 12/20/01 EPA 8021E <br /> Benzene ND 050 ^ ^ <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether 150 5 0 <br /> Surrogate a,a,a-Triuorololuene 977% 70-130 " <br /> la Analytical- San Carlos The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 6 of 22 <br />