Appendix A Mountain Counties Air Basin - County: Plumas Table A-49 OZONE (ppm) 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 Peak 8-Hour Indicator (State) 0.085 0.085 0.077 0.085 0.09 0.091 0.093 0.078 0.079 0.079 0.08 0.084 0.083 0.086 0.069 Avg. of 4th High 8-Hr. in 3 Yrs (Nat) 0.062 0.077 0.078 0.065 0.06 0.06 0.07 0.069 0.071 0.069 0.067 0.062 Peak 1-Hour Indicator (State) 0.091 0.091 0.086 0.086 0.092 0.093 0.096 0.083 0.084 0.083 0.083 0.087 0.088 0.088 0.072 4th High 1-Hr. in 3 Yrs2 0.09 0.09 0.09 0.09 0.092 0.092 0.092 0.09 0.084 0.083 0.084 0.089 0.089 0.089 0.074 Max. 8-Hr. Concentration 0.078 0.073 0.04 0.076 0.083 0.096 0.08 0.042 0.074 0.077 0.076 0.072 0.084 0.064 0.066 0.068 Maximum 1-Hr. Concentration 0.09 0.08 0.05 0.09 0.09 0.105 0.091 0.046 0.087 0.086 0.081 0.086 0.091 0.075 0.073 0.076 Days Above State 8-Hr. Std. 7 2 0 3 25 23 6 0 2 8 2 2 50 0 0 0 Days Above Nat. 8-Hr. Std. 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 Days Above State 1-Hr. Std. 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 PM10 (ug/m3) 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 Max. 24-Hr. Concentration (State) 113 144 138 162 120 130 98 52 55 66 69 115 67 60 48 33 37 53 Max. 24-Hr. Concentration (Nat) 113 144 138 162 120 130 98 52 55 66 74 125 75 60 68 50 58 65 Max. Annual Average (State) 33.4 24.2 21.5 25.3 25.3 19.9 17.6 18 Max. Annual Average (Nat) 28.1 77.9 38.2 40.3 37.5 35.4 33 24 25.9 23 25.3 27.6 21.3 22.5 18 20 23 20.1 Calc Days Above State 24-Hr Std 42 6 6 19 24 25 0 6 Calc Days Above Nat 24-Hr Std 0 0 0 0 0 0 0 0 0 0 0 0 0 PM25 (ug/m3) 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 Max. 24-Hr. Concentration (State) 92 46 58 41 47.8 53.8 179.7 Max. 24-Hr. Concentration (Nat) 92 46 58 41 43 44 60 98th Percentile of 24-Hr Conc. 84 43 40 33 27 Annual Average (State) 11.7 10.6 Avg. of Qtrly. Means (Nat) 15.6 13.3 11.7 10.6 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 4.5 4.5 Max. 1-Hr. Concentration 6 3 Max. 8-Hr. Concentration 4.2 2.3 Days Above State 8-Hr. Std. 0 0 Days Above Nat. 8-Hr. Std. 0 0 NITROGEN DIOXIDE (ppm) 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 Peak 1-Hr. Indicator 0.046 0.046 Max. 1-Hr. Concentration 0.05 0.04 Max. Annual Average SULFUR DIOXIDE (ppm) 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 Peak 1-Hr. Indicator Max. Annual Average Max. 24-Hr. Concentration