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ustrial <br /> ® Sequoia los A 94070 1 1 1 <br /> San Carlos CA 94070-41 S 1 <br /> D- Analytical 1650} 232-9600 <br /> FAX 1650} 232-9612 <br /> e <br /> Blame Tech Services Project Shell(1) Sampled 5113/99 <br /> 1680 Rogers Avenue Project Number Shell 6131 Pacific Ave,Stockton Received 5/14/99 <br /> San lose,CA 95112 Project Manager Fran Thio Reported 6/22/99 <br /> Sample Description: MW6 <br /> Laboratory Sample Number L905253-06 <br /> Batch Date Date Specific Method/ Reporting <br /> Analyte Number Prepared Analyzed Surrogate Limits Limit Result Units Notes* <br /> Sequoia Analytical-San Carlos - <br /> Total Puraeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUFT <br /> Purgeable Hydrocarbons as Gasoline 9050113 5/25/99 5125/99 2500 4020 ug/l I <br /> Benzene " 11250 690 " <br /> Toluene It 250 ND " <br /> Ethylbenzene 25 0 825 " <br /> Xylenes(total) 25 0 770 " <br /> Methyl tent-butyl ether 250 ND <br /> Surrogate a a a-Trtfluorotoluene 700-130 902 % <br /> Volatile Oraamc Oxygenated Compounds by EPA Metbod 8260A <br /> Ethanol 9050110 5/24/99 5/24/99 10000 ND ug/l <br /> Tert-butyl alcohol 11 11 1, 2000 ND " <br /> Methyl tert-butyl ether 200 ND " <br /> Di-isopropyl ether 200 ND " <br /> Ethyl ter -butyl ether 200 ND • <br /> Tert-amyl methyl ether _ _" 200 ND " <br /> Surrogate 12-Dichloroethane-d4 760-114 110 % <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of nates and defnin <br /> Page 7 of 16 <br />