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QSequoia <br />IWO Analytical <br />1551 Industnal Road <br />San Carlos CA 94070-4111 <br />(650)232-9600 <br />FAX (650) 232 9612 <br />www sequoialabs corn <br />Gettler-Ryan/Geostrategies(1) Project Chevron(I) Sampled 6122100 <br />6747 Sierra Court, Suite J Project Number Chevron 9-5775 Received 6123100 <br />Dublin, CA 94568 Project Manager Scott Polston _____ Reported 6128100 <br />Sample Description <br />Laboratory Sample Number <br />EX -1 <br />L006183-01 <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) and BTEX by DHS LUFT <br />Purgeable Hydrocarbons as Gasoline 0060112 6126/00 6/26100 12500 31000 ug/l i <br />Benzene 125 15600 " <br />Toluene 125 ND " <br />Ethylbenzene 125 518 " <br />Xylenes (total) " 125 176 " <br />Surrogate a a a-Trifluorotoluene 600-140 107 <br />Volatile Organic Oxygenated Compounds by EPA Method 8260A <br />Tert-butyl alcohol 1.'f <br />100000 <br />ND " <br />Methyl tert-butyl ether 6/27100 <br />2000 <br />320000 2 <br />Di -isopropyl ether 6/26/00 <br />2000 <br />ND " <br />Ethyl tent -butyl ether <br />2000 <br />7800 " <br />Tert-amyl methyl ether <br />2000 <br />2980 " <br />Surrogate 1,2-Dichloroethane-d4 11760-114 106 % 0 <br />Sequoia Analytical - San Carlos *Refer to end of report for text of notes and definit 40 <br />Page 2 of 5 <br />