Chapter 4 Carbon Monoxide Air Quality Table Table 4-37 CARBON MONOXIDE (ppm) 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 Peak 8-Hr. Indicator (State) 13.9 13.9 14.1 13.7 13.9 13.2 11.5 10.0 10.0 10.9 9.9 9.0 8.3 8.5 8.4 6.4 5.3 4.8 4.2 3.7 Max. 1-Hr. Concentration 21.0 16.0 19.0 23.0 17.0 19.0 13.0 13.0 15.0 12.0 11.0 9.9 10.3 11.9 10.1 8.4 6.1 5.8 4.6 4.3 Max. 8-Hr. Concentration (State) 16.3 12.9 16.5 13.4 11.5 11.4 8.3 9.3 8.9 9.1 7.7 7.5 8.0 7.8 6.6 6.0 4.5 4.1 3.0 3.0 Days Above State 8-Hr. Std. 13 4 5 24 10 3 0 2 0 1 0 0 0 0 0 0 0 0 0 0 Days Above Nat. 8-Hr. Std. 11 4 6 18 9 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0