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Sequoia <br />Analytical <br />819 Striker Avenue Suite 8 <br />Sacramento, CA 9Sg34 <br />(916) 921-960o <br />FAX (916) 921-0100 <br />www sequolalabs com <br />is <br />Gettler-Ryan - Dublin Project Chevron 9-5775, Lodi, CA Sampled 5/25!00 <br />6747 Sierra Court, Ste 1 Project Number 346408 85 Received 5/26100 <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 tteporting <br />Analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br />Kw -1 <br />5005402-01 <br />Water <br />Tert-butyl alcohol <br />0060002 <br />611100 <br />6/l/00 <br />200 <br />782 <br />ug/I <br />Di -isopropyl ether <br />" <br />" <br />" <br />2 00 <br />ND <br />to <br />Surrogate 1,2 -DCA -d4 <br />" <br />" <br />of 600-140 <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 />ugA D <br />Tert-amyl methyl ether <br />200 <br />658 <br />D <br />Surrogate 1,2 -DCA -d4 <br />" <br />600-140 <br />113 <br />% <br />MW -2 <br />5005402-02 <br />Water <br />Tat -butyl alcohol <br />0050274 <br />615/00 <br />615100 <br />200 <br />ND <br />ug/l <br />Methyl tert-butyl ether <br />200 <br />ND <br />" <br />Di -isopropyl ether <br />200 <br />ND <br />" <br />Ethyl tert-butyl ether <br />200 <br />ND <br />" <br />Tert-amyl methyl ether <br />" <br />200 <br />ND <br />" <br />Surrogate 1,1 -DCA -d4 <br />" <br />600-140 <br />105 <br />% <br />MW -3 <br />5005402-03 <br />Water <br />Tett-butyl alcohol <br />0060002 <br />611/00 <br />6/1/00 <br />200 <br />ND <br />119/1 <br />Methyl tert butyl ether <br />" <br />200 <br />8.28 <br />" <br />Di -isopropyl ether <br />200 <br />ND <br />" <br />Ethyl tert-butyl ether <br />2 00 <br />3.72 <br />" <br />Tert-amyl methyl ether_ <br />200 <br />ND <br />Surrogate 1,1 -DCA -d4 <br />600-140 <br />111 <br />% <br />MW4 <br />S005402-04 <br />Water <br />Tert-butyl alcohol <br />0060002 <br />6/1100 <br />611100 <br />200 <br />ND <br />ug/l <br />Methyl tert-butyl ether <br />200 <br />211 <br />" <br />Di -isopropyl ether <br />" <br />200 <br />ND <br />" <br />Ethyl tert-butyl ether <br />200 <br />178 <br />" <br />Tert-amyl methyl ether <br />200 <br />2.60 <br />" <br />Surrogate 1,2 -DCA -d4 <br />600-140 <br />115 <br />% <br />MW -5 <br />S005402-05 <br />Water <br />"Pert -butyl alcohol <br />0060002 <br />611100 <br />6/1/00 <br />200 <br />ND <br />ug/l <br />Methyl tert-butyl ether <br />200 <br />474 <br />" <br />Di -isopropyl ether <br />" <br />200 <br />ND <br />Ethyl tert-butyl ether <br />200 <br />416 <br />"0 <br />Sequoia Analytical - Sacramento <br />'Refer to end of report for text of notes and definitions <br />Page 4 of 10 <br />r� <br />