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Sequoia <br />Analytical <br />6747 Sierra Court, Suite J <br />Dublin, CA 94568 <br />Protect Chevron(l) <br />Protect Number Chevron 9-5775 <br />'rotcct Manager Scott Polston <br />1551 Industrial Road <br />San Carlos CA 94070-4111 <br />(650)232-9600 <br />FAX (650) 232-9612 <br />www sequoialabs com <br />Received 6123/00 <br />Reported 6128/00 <br />Volatile Organic Oxygenated Compounds by EPA Method 8260A/Quanty Contras <br />Sequoia Analytical - San Carlos <br />Date Spike Sample QC Reporting Ltmtt Recov RPD RPD <br />Analyte Analyzed Level Result Result Units Recov Limits % Limit _ % Notes* <br />Batch 0060I14 <br />Date Prepared <br />5/26100 <br />Extraction Method EPA 5030B 1P/TI <br />Blank <br />0060114-BLKI <br />Ethanol <br />6/26/00 <br />ND <br />ug/l <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 />" <br />200 <br />Ethyl tert-butyl ether <br />ND <br />" <br />200 <br />Tert-amyl methyl ether <br />ND <br />200 <br />Surrogate 11-Dtchloroethane-d4 <br />500 <br />541 <br />760-114 <br />108 <br />LCS <br />0060114 -BSI <br />Methyl tert-butyl ether <br />6/26/00 <br />500 <br />416 <br />ug/l <br />700-130 <br />832 <br />Surrogate 11-Dichloroethane-d4 <br />01500 <br />556 <br />760-114 <br />111 <br />Matrix <br />0060114-MS1 <br />L006137-02 <br />Methyl tert-butyl ether <br />6/26100 <br />500 ND <br />429 <br />ug/l <br />600-140 <br />858 <br />Surrogate 1,1-Dichloroethane-d4 <br />" <br />500 <br />544 <br />760-114 <br />109 <br />Matrix Spike Dup <br />0060114-MSDI L006137-02 <br />Methyl tett-butyl ether <br />6126/00 <br />500 ND <br />438 <br />ug/l <br />600-140 <br />876 250 208 <br />Surrogate 11-Dtchloroethane-d4 <br />" <br />500 <br />554 <br />760-114 <br />H] <br />Sequoia Analytical - San Carlos *Refer to end of report for text of notes and def+nitta <br />Page 4 of 5 <br />