Appendix A	North Coast Air Basin - County: Del Norte					Table A-53														

OZONE (ppm)	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002
Peak 1-Hour Indicator						0.062	0.058	0.066	0.063	0.063	0.062	0.063	0.062							
4th High 1-Hr in 3 Yrs					0.039	0.059	0.059	0.06	0.06	0.06	0.06	0.06	0.06							
Avg of 4th Hi 8-Hr in 3 Yrs					0.035	0.043	0.042	0.053	0.051	0.051	0.05	0.051	0.049							
Maximum 1-Hr. Concentration					0.04	0.068	0.05	0.07	0.06	0.07	0.06	0.064	0.056							
Max. 8-Hr. Concentration					0.038	0.06	0.042	0.06	0.051	0.061	0.053	0.061	0.052							
Days Above State Standard					0	0	0	0	0	0	0	0	0							
Days Above Nat. 1-Hr. Std.					0	0	0	0	0	0	0	0	0							
Days Above Nat. 8-Hr. Std.					0	0	0	0	0	0	0	0	0							

PM10 (ug/m3)	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002
Max. 24-Hour Concentration (State)													41	42	58	50	42	46	48	39
Max. 24-Hr. Concentration (Nat)						46							41	42	58	48	39	44	46	39
Annual Average (State)															20.8		18.4	17.6	17.3	
Annual Average (Nat)															20.9		17.3		16.9	18.7
Calc Days Above State 24-Hr Std															6		0	0	0	
Calc Days Above Nat 24-Hr Std													0		0		0	0	0	0

CARBON MONOXIDE (ppm)	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002
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)	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002
Peak 1-Hr. Indicator																				
Max. 1-Hr. Concentration																				
Max. Annual Average																				

SULFUR DIOXIDE (ppm)	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002
Peak 1-Hr. Indicator																				
Max. Annual Average																				
Max. 24-Hr. Concentration