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Sequoia <br />Analytical <br />819 Striker Avenue Suite 8 <br />Sacramento CA 95834 <br />(916) 921 9600 <br />FAX (916) 921-0100 <br />www sequoialabs corn <br />SECOR International - Rancho Cordova Proju3 Arco 4932 Stockton CA <br />3017 Kilgore Road Suite 100 Project Number NIA Reported <br />Rancho Cordova CA 95670 Project Manager Rusty Benkosky 0312 l/01 17 27 <br />Volatile Oxygenate Compounds by EPA Method 8260A <br />Sequoia Analytical - Sacramento <br />Reporting <br />inalyte Result Limit Units Dilution Batch Prepared Analyzed Method Note <br />MW -1 (5103103-01) Water <br />Sampled <br />03/05/01 16 42 <br />Received <br />03/07/01 07 55 <br />rt -rt -butyl alcohol <br />ND <br />200 <br />ug/l l <br />1030167 03/14/01 03/14/01 EPA 8260A <br />Methyl tert-butyl ether <br />376 <br />200 <br />A-01 <br />Di -isopropyl ether <br />ND <br />200 <br />Ethyl tert-butyl ether <br />ND <br />200 <br />" <br />Tert-amyl methyl ether <br />964 <br />200 <br />1,2-Dichloroethane <br />680 <br />200 <br />" <br />Ethylene dtbromide <br />ND <br />200 <br />" <br />Surrogate 12 -DCA -d4 <br />104% <br />60-140 <br />MW -2 (5103103-02) Water <br />Sampled <br />03/05/01 16 12 <br />Received <br />03/07/0107 55 <br />R-05 <br />Tert-butyl alcohol <br />ND <br />1000 <br />ug/l 5 <br />1030167 03/14/01 03/14/01 EPA 8260A <br />Di -isopropyl ether <br />ND <br />too <br />" <br />Ethyl tert-butyl ether <br />ND <br />100 <br />" <br />Tert-amyl methyl ether <br />ND <br />too <br />" <br />Dichloroethane <br />ND <br />100 <br />" <br />ylene dtbromide <br />ND <br />100 <br />Surrogate 12 -DCA -d4 <br />940% <br />60-140 <br />" <br />MW -2 (S103103-02RE1) Water Sampled 03/05/01 16 12 Received 03/07/0107 55 <br />Methyl tert-butyl ether _ <br />2860 <br />_ _ 400 <br />ug/l 20 <br />1030199 03/16/01 03/16/01 EPA 8260A <br />Surrogate 1 2 -DCA -d4 <br />924% <br />60-140 <br />MW -3 (5103103-03) Water <br />Sampled <br />03/05/01 15 41 <br />Received <br />03107/0107 55 <br />Tort -butyl alcohol <br />ND <br />200 <br />uo 1 <br />1030167 03/14/01 03/14/01 EPA 8260A <br />Methyl tert-butyl ether <br />264 <br />200 <br />" <br />Di -isopropyl ether <br />ND <br />200 <br />Ethyl tert-butyl ether <br />ND <br />200 <br />" <br />Tert-amyl methyl ether <br />ND <br />200 <br />" <br />1 2-Dichloroethane <br />ND <br />200 <br />" <br />Ethylene dibromide <br />ND <br />2 00 <br />Surrogate 12 -DCA -d4 <br />962% <br />60-140 <br />S quota Analytical - Sacramento The results in this report apply to the samples analy_ed to accordance wth the chain of <br />0custody document This analytical report must be reproduced in its entirety <br />Page 4 of 12 <br />