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Sequoia 1551 Industrial Road <br /> ,!XNSan Carlos CA 94070-4111 <br /> qw Analytical (650) 232-9600 <br /> FAX(650) 232-9612 <br /> 0 <br /> Blaine Tech Services Project Shell(2) Sampled 5/13/99 <br /> 1680 Rogers Avenue Project Number Shell 341 East Main St,Ripon Received 5/14/99 <br /> San Jose,CA 95112 Pro ect Manager Fran Tbte Reported 6/14/99 <br /> Sample Description EW1 <br /> Laboratory Sample Number L905255-01 <br /> Batch - Date Date Specific Method/ Reporting <br /> Analyte Number Prepared Analyzed Surrogate Limits Lima Result Units Notes* <br /> Sequoia Analytical-San Carlos <br /> Total Pur eable Hydrocarbons C6-C12BTEX and MTBE by DHS LUFT <br /> Purgeable Hydrocarbons as Gasoline 9050117 5/26/99 5/26/99 500 420 ug/1 1 <br /> Benzene " 0 500 15.3 <br /> Toluene 0 500 711 " <br /> Ethylbenzene 0 500 0 793 " <br /> Xylenes(total) 0 500 262 " <br /> Methyl tert-butyl ether 9050126 5/27/99 5/27/99 500 10500 _ <br /> Surrogate a,a,a-Trifluorotoluene 9050117 5/26/99 5/26/99 700-130 806 % <br /> MTBE by EPA Method 8260A <br /> _Methyl tert-butyl ether 9060044 6/7/99 6/7/99 333 _ 15100 ug/1 <br /> Surrogate 12-Dxhloroethane-d4 "— -- 760-114 964 % <br /> I <br /> Sequoia Analytical- San Carlos *Refer to end of report for text of notes and definttto <br /> Page 2 of 7 <br />