Appendix A Mountain Counties Air Basin - County: Nevada Table A-47 OZONE (ppm) 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Peak 1-Hour Indicator 0.118 0.125 0.118 0.11 0.076 0.111 0.111 0.118 0.113 0.114 0.114 0.117 0.116 0.116 0.117 0.118 Peak 8-Hour Indicator 0.111 0.11 0.104 0.096 0.064 0.097 0.097 0.104 0.103 0.103 0.101 0.104 0.103 0.105 0.107 0.106 4th High 1-Hr. in 3 Yrs 0.1 0.11 0.11 0.11 0.07 0.1 0.1 0.11 0.108 0.111 0.109 0.115 0.116 0.117 0.116 0.117 Avg. of 4th High 8-Hr. in 3 Yrs 0.097 0.094 0.092 0.088 0.065 0.077 0.085 0.087 0.089 0.095 0.095 0.096 0.097 0.098 0.098 0.097 Maximum 1-Hr. Concentration 0.12 0.15 0.11 0.11 0.09 0.11 0.099 0.111 0.108 0.119 0.165 0.13 0.116 0.127 0.12 0.126 Max. 8-Hr. Concentration 0.107 0.115 0.096 0.087 0.078 0.107 0.092 0.104 0.101 0.099 0.103 0.113 0.106 0.113 0.103 0.111 Days Above State Standard 12 8 7 2 0 8 3 22 10 16 20 21 21 24 23 11 Days Above Nat. 1-Hr. Std. 0 2 0 0 0 0 0 0 0 0 1 1 0 1 0 1 Days Above Nat. 8-Hr. Std. 11 9 7 5 0 9 4 29 17 25 33 28 23 28 23 14 PM10 (ug/m3) 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Max. 24-Hr. Concentration (State) 30 34 44 81 49 Max. 24-Hr. Concentration (Nat) 38 44 43 34 49 136 92 84 57 Annual Average (State) 28.3 Annual Average (Nat) 22.3 28.4 14.4 25.3 Calc Days Above State 24-Hr Std 41 Calc Days Above Nat 24-Hr Std 0 0 0 0 PM2.5 (ug/m3) 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Max. 24-Hr. Concentration (State) 50 27 120 23 21 34 Max. 24-Hr. Concentration (Nat) 50 27 120 23 21 34 98th Percentile of 24-Hr Conc. 23 26 16 20 18 Annual Average (State) 7.2 7.7 Avg. of Qtrly. Means (Nat) 8.8 9.4 7.5 7.2 6.8 CARBON MONOXIDE (ppm) 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Peak 8-Hr. Indicator Max. 1-Hr. Concentration 1 0 10 9 Max. 8-Hr. Concentration 0.1 0 5.4 5.4 Days Above State 8-Hr. Std. 0 0 0 0 Days Above Nat. 8-Hr. Std. 0 0 0 0 NITROGEN DIOXIDE (ppm) 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Peak 1-Hr. Indicator Max. 1-Hr. Concentration Max. Annual Average SULFUR DIOXIDE (ppm) 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Peak 1-Hr. Indicator Max. Annual Average Max. 24-Hr. Concentration