Appendix A North Coast Air Basin - County: Sonoma - NC Table A-56 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 0.085 0.088 0.089 0.09 0.088 0.091 0.103 0.109 0.105 0.093 0.083 0.082 Peak 8-Hour Indicator 0.068 0.072 0.072 0.074 0.074 0.079 0.087 0.092 0.089 0.078 0.069 0.068 4th High 1-Hr. in 3 Yrs 0.08 0.09 0.09 0.09 0.09 0.09 0.11 0.11 0.11 0.1 0.08 0.08 Avg. of 4th High 8-Hr. in 3 Yrs 0.063 0.065 0.066 0.069 0.069 0.072 0.077 0.082 0.076 0.069 0.063 0.062 Maximum 1-Hr. Concentration 0.09 0.09 0.1 0.1 0.08 0.1 0.13 0.1 0.09 0.09 0.08 0.09 Max. 8-Hr. Concentration 0.072 0.073 0.08 0.09 0.071 0.091 0.106 0.087 0.077 0.073 0.068 0.08 Days Above State Standard 0 0 1 1 0 2 7 4 0 0 0 0 Days Above Nat. 1-Hr. Std. 0 0 0 0 0 0 1 0 0 0 0 0 Days Above Nat. 8-Hr. Std. 0 0 0 1 0 1 5 2 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) 62 85 266 78 58 53 57 43 40 54 33 74 45 63 37 45 Max. 24-Hr. Concentration (Nat) 86 85 266 78 58 53 57 43 40 54 32 71 44 59 36 45 Annual Average (State) 23.8 24.8 20.7 18.4 16.4 16.5 16.6 19.4 12.6 15.6 15.1 Annual Average (Nat) 25.4 27.2 23.8 24.2 20.3 18.4 16.5 16.5 16 18.3 14.7 15 15 14.8 Calc Days Above State 24-Hr Std 22 23 12 13 0 5 0 18 0 0 0 Calc Days Above Nat 24-Hr Std 0 0 6 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) Max. 24-Hr. Concentration (Nat) 98th Percentile of 24-Hr Conc. Annual Average (State) Avg. of Qtrly. Means (Nat) 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 Max. 1-Hr. Concentration Max. 8-Hr. Concentration Days Above State 8-Hr. Std. Days Above Nat. 8-Hr. Std. 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 Max. 1-Hr. Concentration 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