OKLAHOMA CARBON MONOXIDE
 Highest 8 Hour Averages Through 12/31/2009
PPM          
Site  2005 2006 2007 2008 2009
  1st          2nd 1st          2nd 1st          2nd 1st          2nd 1st          2nd
Tulsa 1.5     1.5 1.7     1.7 1.8     1.6 1.4      1.4 1.5     1.3
Site 191 1/25     1/26 12/6    12/7 2/22    12/5 12/6     12/7 7/1     1/22
           
Tulsa     2.18     1.80 1.42     1.26 1.23     1.23
Site 1127     1/26     1/3 1/27     1/12 11/1     12/11
           
OKC 2.4     2.0 2.1     1.9 2.3     2.1 Monitor Removed Monitor Removed
Site 047 6/25   1/20 1/3    1/2 2/22     11/18    
           
OKC       1.1     1.0 1.4     1.1
Site 033       12/7     3/1 1/31     1/29
           
Lawton 1.0      0.9 Monitor Removed Site Closed Site Closed Site Closed
Site 647 2/4     2/10