OZONE (ppm) 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 Peak 1-Hour Indicator 0.119 0.117 0.117 0.120 0.123 0.123 0.133 0.129 National 1-Hr. Design Value 0.110 0.110 0.119 0.119 0.123 0.127 0.128 0.128 Nat. 8-Hr. Design Value 0.090 0.089 0.091 0.091 0.093 0.090 0.095 0.096 Maximum 1-Hr. Concentration 0.120 0.110 0.123 0.146 0.127 0.135 0.143 0.121 Max. 8-Hr. Concentration 0.105 0.090 0.104 0.112 0.106 0.104 0.115 0.107 Days Above State Standard 15 11 15 21 21 9 30 22 Days Above Nat. 1-Hr. Std. 0 0 0 1 2 1 4 0 Days Above Nat. 8-Hr. Std. 11 5 15 18 14 3 28 13 PM10 (ug/m3) 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 Max. 24-Hour Concentration 30 Max. Annual Geometric Mean Calc Days Above State 24-Hr Std 0 Calc Days Above Nat 24-Hr Std 0 CARBON MONOXIDE (ppm) 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 Peak 8-Hr. Indicator 2.5 2.2 2.0 2.0 1.7 1.5 1.4 1.5 Max. 1-Hr. Concentration 3.0 3.0 9.3 9.3 2.2 2.8 2.5 2.2 Max. 8-Hr. Concentration 2.4 3.0 1.8 2.6 1.5 1.4 1.4 1.5 Days Above State 8-Hr. Std. 0 0 0 0 0 0 0 0 Days Above Nat. 8-Hr. Std. 0 0 0 0 0 0 0 0 NITROGEN DIOXIDE (ppm) 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 Peak 1-Hr. Indicator Max. 1-Hr. Concentration NO MONITORING DATA AVAILABLE Max. Annual Average SULFUR DIOXIDE (ppm) 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 Peak 1-Hr. Indicator Max. 24-Hr. Concentration NO MONITORING DATA AVAILABLE Max. Annual Average