OKLAHOMA CARBON MONOXIDE
Highest 8 Hour Averages Through 12/31/2007
PPM
Site	2003	2004	2005	2006	2007
	1st          2nd	1st          2nd	1st          2nd	1st          2nd	1st          2nd
Tulsa	2.3          2.2	2.0     1.8	1.5     1.5	1.7     1.7	1.8     1.8
Site 191	2/12        2/13	1/23     1/22	1/25    1/26	12/6    12/7	2/22   12/17
Tulsa	3.1         2.4	Site Closed	Site Closed	Site Closed	Site Closed
Site 126	2/12       1/3
OKC	3.4        2.8	2.4     2.1	2.4     2.0	2.1     1.9	2.3     2.1
Site 047	1/1        1/21	6/26   11/20	6/25    1/20	1/3     1/2	2/22     11/18
Moore	1.4        1.4	Monitor Removed	Monitor Removed	Monitor Removed	Monitor Removed
Site 049	1/1        1/3
Lawton	2.2       1.8	1.0      1.0	1.0     0.9	Monitor Removed	Site Closed
Site 647	1/4       1/8	1/22     4/8	2/4    2/10