Appendix A	North Coast Air Basin - County: Trinity					Table A-57														

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																				
4th High 1-Hr in 3 Yrs																				
Avg of 4th Hi 8-Hr in 3 Yrs																				
Maximum 1-Hr. Concentration																				
Max. 8-Hr. Concentration																				
Days Above State Standard																				
Days Above Nat. 1-Hr. Std.																				
Days Above Nat. 8-Hr. Std.																				

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)														63	54	47	95	51	72	53
Max. 24-Hr. Concentration (Nat)						125							41	72	54	46	100	51	73	52
Annual Average (State)															17.8	18.1	24.3	18.8		
Annual Average (Nat)															18			18.7		
Calc Days Above State 24-Hr Std															6	0	36	7		
Calc Days Above Nat 24-Hr Std													0	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					3.4															
Max. 1-Hr. Concentration					4															
Max. 8-Hr. Concentration					3															
Days Above State 8-Hr. Std.					0															
Days Above Nat. 8-Hr. Std.					0															

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