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Sequoia <br />� Analytical <br />819 Stoker Avenue, Suite 8 <br />Sacramento CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />www sequoialabs com <br />0 <br />Gettler-Ryan - Dublin Project Chevron 9-5775, Lodi, CA Sampled 5125100 <br />6747 Sierra Court, Ste J Protect Number 346408 85 Received 5126100 <br />Dublin, CA 94568 Project Manager Deanna L Harding Reported 6112100 <br />Volatile Oxygenate Compounds by EPA Method 8260A <br />Sequoia Analytical - Sacramento <br />Batch Date Date Surrogate Reporting <br />Number Prepared Analyzed Limits Limit Result Units Notes* <br />MW -1 <br />S005402-01 <br />Water <br />Tert-butyl alcohol <br />0060002 <br />611100 <br />611100 <br />200 <br />782 <br />ug/l <br />Di -isopropyl ether <br />It <br />200 <br />ND <br />Surrogate 1,2 -DCA -d4 <br />it <br />11600-140 <br />106 <br />% <br />Methyl tert-butyl ether <br />0050274 <br />615100 <br />615100 <br />200 <br />57800 <br />ug/l D <br />Surrogate 1,2 -DCA -d4 <br />600-140 <br />117 <br />% <br />Ethyl tert-butyl ether <br />200 <br />3670 <br />ug/l D <br />Tert-amyl methyl ether <br />200 <br />658 <br />D <br />Surrogate 1 2 -DCA -d4 <br />600-140 <br />113 <br />% <br />MW -2 <br />S005402-02 <br />Water <br />Tert-butyl alcohol <br />0050274 <br />615100 <br />615100 <br />200 <br />ND <br />uF,n <br />Methyl tert-butyl ether <br />H" <br />2 00 <br />ND <br />" <br />Di -isopropyl ether <br />ti200 <br />ND <br />Ethyl tert-butyl ether <br />01200 <br />ND <br />" <br />Tcrt-amyl methyl. ether <br />2 00 <br />ND <br />" <br />Surrogate 1,2-DC1-d4 <br />600-140 <br />105 <br />% <br />MW -3 <br />5005402-03 <br />Water <br />Tirt-butyl alcohol <br />0060002 <br />6/1/00 <br />611/00 <br />200 <br />ND <br />ug/1 <br />Methyl tort -butyl ether <br />200 <br />8.28 <br />" <br />Dl -isopropyl ether <br />" <br />2 00 <br />ND <br />" <br />Ethyl tert-butyl ether <br />2 00 <br />372 <br />Tert-amyl meth I ether <br />" <br />" <br />2 00 <br />ND <br />Surrogate 1,2 -DCA -d4 <br />600-140 <br />112 <br />% <br />MW -4 <br />S005402-04 <br />Water <br />Tert-butyl alcohol <br />0060002 <br />6/L100 <br />611100 <br />200 <br />ND <br />ug/1 <br />Methyl tert-butyl ether <br />2 00 <br />211 <br />" <br />Di -isopropyl ether <br />" <br />2 00 <br />ND <br />" <br />Ethyl tert-butyl ether <br />2 00 <br />179 <br />" <br />Tert-amyl methyl ether <br />It2 <br />00 <br />2 60 <br />" <br />Surrogate 1,2 -DCA -d4 <br />600-140 <br />115 <br />% <br />MW -5 <br />Tert-butyl alcohol <br />Methyl tert-butyl ether <br />D 1 —Ph <br />0060002 611100 <br />It " <br />5005402-05 Water <br />611100 200ND ug/l <br />it 2 474 <br />00 " <br />200 <br />i-rsopropy er ND <br />Ethyl tert-butyl ether 200 416 <br />Sequoia Analytical - Sacramento *Refer to end of report for text of notes and definitions <br />Page 4 of 10 <br />