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6 4 Sequoia <br />1�—N Analytical <br />1551 Industrial Road <br />San Carlos CA 94070-4111 <br />(650) 232-9600 <br />FAX (650) 232-9612 <br />www sequoialabs tom <br />Gettler-Ryan/Geostrategies(I) <br />Project <br />Chevron(]) <br />Sampled <br />6129100 <br />6747 Sierra Court, Suite J <br />Project Number <br />Chevron 9-5775 <br />Received <br />6130/00 <br />Dublin, CA 94568 <br />Project Manager' <br />Scott Polston <br />Reported <br />715/00 <br />Volatile <br />Organic Oxygenated Compounds by EPA Method 82�0A/Quality Control <br />d <br />Sequoia <br />Analytical - San Carlos , <br />- <br />Date Spike <br />Sample QC <br />Reporting Linin Recov <br />RPD RPD <br />Analyte <br />Analyzed Level <br />Result Result Units <br />Recov Limits % <br />Limit % <br />Batch 0070014 <br />Date Prepared 7/5100 <br />Extraction Method EPA 5030BFP/Tl <br />Blank <br />0070014-BLK1 <br />Ethanol <br />7/5100 <br />ND ug/i <br />1000 <br />Tert-butyl alcohol <br />ND <br />100 <br />Methyl tert-butyl ether <br />ND <br />200 <br />Di -isopropyl ether <br />ND <br />200 <br />Ethyl tert-butyl. ether <br />ND <br />200 <br />Tert-amyl methyl ether <br />ND <br />200 <br />S ro ate 1 2-Dtchloroethane-d4 <br />500 <br />519 <br />760-114 104 <br />ur g <br />LCS 0070014 -BSI <br />Methyl tert-butyl ether 7/5100 Soo 413 ug/l 700-130 826 <br />Surrogate 1,2-Dichloroethane-d4 11Soo 522 " 760-114 104 <br />• <br />Sequoia Analytical - San Carlos 'Refer to end of reportfor text of notes and defnitto <br />Page 5 of 6 <br />