OKLAHOMA CARBON MONOXIDE
	Highest 8 Hour Averages as of 12/31/04
	PPM
	Site	1999	2000	2001	2002	2003	2004
		1st          2nd	1st          2nd	1st          2nd	1st          2nd	1st          2nd	1st          2nd
	Tulsa	3.5            3.0	3.3           3.0	4.1          3.5	2.8         2.7	2.3          2.2	2.0     1.8
	Site 191	11/11        1/17	11/28      11/3	1/6          11/16	8/27       8/26	2/12        2/13	1/23     1/22
	Tulsa	3.9           3.5	3.8           3.7	5.5         4.1	3.2         2.9	3.1         2.4	Site Closed
	Site 126	11/16     10/26	2/7        11/28	1/6        12/7	2/2        2/17	2/12       1/3
	OKC	4.6            4.2	4.2            4.1	4.2           3.4	3.3           2.7	3.4        2.8	2.4     2.1
	Site 047	11/16      11/11	2/7          11/28	1/15        11/5	1/15       12/26	1/1        1/21	6/26   11/20
	OKC	3.1           2.9	3.2           3.1	2.5           2.4	2.9           2.4	Site Closed	Site Closed
	Site 025	11/27      11/10	11/28       1/30	12/1        1/15	2/1        12/26
	Moore	2.7           2.2	2.8           1.9	1.7            1.5	1.9           1.7	1.4        1.4	Monitor Closed
	Site 049	11/16      11/20	11/30      1/30	1/15         1/22	2/2         2/17	1/1        1/3
	Lawton	1.7           1.6	1.4           1.3	2.4          2.1	2.3          2.1	2.2       1.8	1.0      1.0
	Site 647	4/4          1/11	12/15       12/7	1/4         12/2	12/15    12/14	1/4       1/8	1/22     4/8