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Sequoia 1551 A 94070-4111 <br /> 4070/ Road <br /> San Carlos CA 94070-41 1 1 <br /> 4 (650) 232-9600 <br /> i!D Analytical <br /> FAX(650)232-9612 <br /> Environmental Resolutions Project Tosco(1) Sampled 5/11/99 to 5/12/99 <br /> 74 Digital Dnve,Suite 6 Project Number Tosco 76#5886 Received 5/12/99 <br /> Novato,CA 94949 Project Manger Keith Romstad Reported 5127199 <br /> Sample Description A-Inf-MW2 051121991100 <br /> Laboratory Sample Number L905196-04 <br /> Batch Date Date Specific Method/ Reporting <br /> Analyte Number Prepared Analyzed Surro to Limits Limit Result Units Notes* <br /> Sequoia Analytical-San Carlos <br /> Total Purgeable Hydrocarbons(C6-C12)and BTEX by DHS LUFT <br /> Purgeabie Hydrocarbons as Gasoline 9050112 5/25/99 5125199 100 ND ug/1 I <br /> Benzene " 0100 ND " <br /> Toluene " 0100 ND " <br /> Ethylbenzene 0100 ND " <br /> Xylenes(total) 0 100 ND " <br /> Surrogate a,a,a-TnfTuorotoluene " 600-140 79 2 <br /> MTBE by EPA Method 8260A <br /> Methyl tert-butyl ether 9050061 5/14/99 5/14/99 0 500 110 ug/l <br /> Surrogate 1 2-Dichloroethane-d4 " 760-114 107 % <br /> I <br /> #,Joja Analytical-San Carlos $Refer to end of report for text of notes and definitions <br /> Page 5 of 9 <br />