Appendix A North Central Coast Air Basin - County: Santa Cruz Table A-54 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) 0.08 0.077 0.075 0.074 0.07 0.068 0.079 0.09 0.086 0.088 0.082 0.08 0.081 0.075 0.078 0.075 0.077 0.076 0.078 0.074 Avg. of 4th High 8-Hr. in 3 Yrs (Nat) 0.066 0.067 0.062 0.061 0.06 0.058 0.058 0.059 0.072 0.062 0.066 0.067 0.068 0.066 0.066 0.065 0.064 0.065 0.066 0.063 Peak 1-Hour Indicator (State) 0.096 0.098 0.095 0.093 0.084 0.083 0.089 0.099 0.103 0.104 0.098 0.095 0.097 0.088 0.09 0.087 0.087 0.085 0.087 0.082 4th High 1-Hr. in 3 Yrs2 0.09 0.09 0.09 0.09 0.08 0.09 0.09 0.1 0.1 0.1 0.097 0.091 0.092 0.084 0.089 0.084 0.085 0.085 0.085 0.081 Max. 8-Hr. Concentration 0.077 0.073 0.07 0.087 0.08 0.082 0.075 0.086 0.078 0.07 0.088 0.071 0.077 0.072 0.078 0.073 0.077 0.074 0.083 0.066 Maximum 1-Hr. Concentration 0.09 0.09 0.08 0.1 0.1 0.12 0.09 0.1 0.094 0.097 0.107 0.089 0.107 0.097 0.096 0.085 0.086 0.098 0.091 0.078 Days Above State 8-Hr. Std. 1 2 0 3 1 2 1 13 4 0 7 1 1 3 2 2 1 2 3 0 Days Above Nat. 8-Hr. Std. 0 0 0 1 0 0 0 2 0 0 2 0 0 0 0 0 0 0 0 0 Days Above State 1-Hr. Std. 0 0 0 1 1 2 0 7 0 1 2 0 1 1 1 0 0 1 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) 65 51 49 49 36 102 106 152 115 113 78 106 52 74 81 72 83 69 Max. 24-Hr. Concentration (Nat) 65 51 49 49 36 102 106 152 115 113 76 103 50 72 77 70 80 66 Max. Annual Average (State) 23.8 24.3 21.7 31.1 36.3 32.8 36.9 32.3 27.1 28 28.6 28.2 24.3 Max. Annual Average (Nat) 26.3 25 23.9 24.3 17.4 35.6 31.1 36.4 32.8 37 28.5 30.9 26.2 28.7 26.8 27.3 27.3 23.6 Calc Days Above State 24-Hr Std 0 0 12 31 71 71 72 50 18 24 31 43 12 Calc Days Above Nat 24-Hr Std 0 0 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) 31.3 23.3 23.1 22.8 15 22.6 21.7 Max. 24-Hr. Concentration (Nat) 31.3 23.3 23.1 22.8 15 22.6 21.7 98th Percentile of 24-Hr Conc. 21.9 17.9 23.1 22 13.6 Annual Average (State) 7.9 9.1 8.6 Avg. of Qtrly. Means (Nat) 9.4 7.9 9.1 8.6 7.4 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 1.5 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1 0.8 0.8 0.8 0.8 0.9 0.9 0.9 0.8 0.8 Max. 1-Hr. Concentration 1 2 3 2 1 2 1 2.2 1.4 3 0.9 1 2 1.3 1.9 1.3 1.6 2.1 1.6 Max. 8-Hr. Concentration 1 1.3 1.3 1 1 1.2 1 1.3 0.9 1 0.7 0.9 0.8 0.8 1 0.8 0.7 1 0.9 Days Above State 8-Hr. Std. 0 0 0 0 0 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 0 0 0 0 0 0 0 0 0 0 0 0 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 0.044 0.048 0.049 0.05 0.049 0.047 0.043 0.051 0.052 0.05 0.045 0.041 0.035 0.036 0.036 0.035 0.036 0.035 0.031 Max. 1-Hr. Concentration 0.04 0.05 0.05 0.04 0.05 0.04 0.04 0.05 0.045 0.053 0.042 0.031 0.039 0.032 0.035 0.042 0.035 0.034 0.032 0.03 Max. Annual Average 0.005 0.008 0.006 0.005 0.005 0.004 0.005 0.005 0.005 0.005 0.004 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 0.02 0.02 0.02 0.01 0.01 0.03 0.04 0.05 0.04 0.03 0.01 0.01 0.01 0.02 0.03 0.03 0.03 0.02 Max. Annual Average 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Max. 24-Hr. Concentration 0.01 0.01 0.01 0.01 0.01 0 0.01 0.01 0.01 0.02 0 0 0.01 0 0 0.01 0.01 0.01 0 0