Appendix A Mountain Counties Air Basin - County: Plumas Table A-47 OZONE (ppm) 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 Peak 1-Hour Indicator 0.09 0.09 0.087 0.09 0.094 0.094 0.096 0.083 0.084 0.083 0.084 0.088 0.088 Peak 8-Hour Indicator 0.082 0.082 0.075 0.081 0.086 0.087 0.089 0.076 0.077 0.076 0.078 0.081 0.08 4th High 1-Hr. in 3 Yrs 0.08 0.08 0.05 0.08 0.09 0.09 0.091 0.091 0.081 0.083 0.083 0.083 0.087 0.087 Avg. of 4th High 8-Hr. in 3 Yrs 0.073 0.071 0.037 0.053 0.062 0.077 0.078 0.065 0.06 0.06 0.07 0.069 0.071 0.069 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 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 Days Above State Standard 0 0 0 0 0 1 0 0 0 0 0 0 0 0 Days Above Nat. 1-Hr. Std. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Days Above Nat. 8-Hr. Std. 0 0 0 0 0 2 0 0 0 0 0 0 0 0 PM10 (ug/m3) 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 Max. 24-Hr. Concentration (State) 113 144 138 162 120 130 98 52 55 66 69 115 67 60 48 47 Max. 24-Hr. Concentration (Nat) 153 144 138 162 120 130 98 52 55 66 74 125 75 60 49 49 Annual Average (State) 33.4 24.1 21.5 18.5 19.9 18.1 Annual Average (Nat) 38.2 37.5 33 24 21.4 22.4 25.3 27.6 21.3 22.5 19.7 Calc Days Above State 24-Hr Std 42 6 6 6 25 0 Calc Days Above Nat 24-Hr Std 0 0 0 0 0 0 0 0 0 0 0 PM2.5 (ug/m3) 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 Max. 24-Hr. Concentration (State) 92 46 58 41 47.8 Max. 24-Hr. Concentration (Nat) 92 46 58 41 43 98th Percentile of 24-Hr Conc. 84 43 40 Annual Average (State) Avg. of Qtrly. Means (Nat) 15.6 13.3 CARBON MONOXIDE (ppm) 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 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) 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 Peak 1-Hr. Indicator 0.046 0.046 Max. 1-Hr. Concentration 0.05 0.04 Max. Annual Average SULFUR DIOXIDE (ppm) 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 Peak 1-Hr. Indicator Max. Annual Average Max. 24-Hr. Concentration