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Sequoia <br />� Analytical <br />1551 Industrial Road <br />San Carlos CA 94070-4111 <br />(650) 232-9600 <br />FAX (650) 232-9612 <br />Blaine Tech Services <br />Project <br />Chevron(3) <br />Sampled <br />6/21199 <br />1680 Rogers Avenue <br />Project Number <br />Chevron 9-57751990621 R-3 <br />Received <br />6/23/99 <br />San Jose, CA 95112 <br />Project Manager <br />Christine Lillie <br />Reported <br />7112/99 <br />Sample Description MW -1 <br />Laboratory Sample Number L906301-01 <br />Analytical - San Carlos <br />to end of report for text of notes <br />Page 2 of 11 <br />Batch <br />Date <br />Date <br />Specific Method/ <br />Reporting <br />Analyte <br />Number <br />Prepared <br />Analyzed <br />Surrogate Limits <br />Limit <br />Result <br />Units Notes* <br />Sequoia Analytical <br />- San Carlos <br />Total Puraeable Hydrocarbons [C6-02), <br />BTEX and MTBE by <br />DHS LUFr <br />Purgeable Hydrocarbons as Gasoline <br />9060154 <br />6128199 <br />6/29/99 <br />100 <br />928 <br />ug/l 1 <br />Benzene <br />" <br />It <br />It <br />100 <br />600 <br />" <br />Toluene <br />It <br />it <br />it <br />100 <br />ND <br />" <br />Etbylbenzene <br />" <br />" <br />it <br />100 <br />108 <br />" <br />Xylenes (total) <br />1 00 <br />195 <br />" <br />Methyl tent -butyl ether <br />9060153 <br />500 <br />9750 <br />" <br />Surrogate a,a,a-Trifluorotoluene <br />9060154 <br />700-130 <br />118 <br />Volatile Organic Oxygenated Compounds by EPA Method 8260A <br />Ethanol <br />9060143 <br />6125199 <br />6125199 <br />50000 <br />ND <br />ug/l <br />Tert-butyl alcohol <br />I. <br />" <br />it <br />10000 <br />ND <br />" <br />Methyl tert-butyl ether <br />100 <br />8650 <br />" <br />ether <br />100 <br />ND <br />" <br />WIopropyl <br />tent -butyl ether <br />100 <br />945 <br />" <br />Tert-amyl methyl ether <br />100 <br />115 <br />" <br />Surrogate 1,2-Dichloroethane-d4 <br />760-114 <br />958 <br />Analytical - San Carlos <br />to end of report for text of notes <br />Page 2 of 11 <br />