Appendix A	North Coast Air Basin - County: Humboldt					Table A-54														

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									0.049	0.049										
4th High 1-Hr in 3 Yrs								0.03	0.04	0.04										
Avg of 4th Hi 8-Hr in 3 Yrs								0.03	0.035	0.034										
Maximum 1-Hr. Concentration								0.04	0.05	0.04										
Max. 8-Hr. Concentration								0.031	0.042	0.04										
Days Above State Standard								0	0	0										
Days Above Nat. 1-Hr. Std.								0	0	0										
Days Above Nat. 8-Hr. Std.								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)						98	92	83				77	68	87	56	45	60	53	67	38
Max. 24-Hr. Concentration (Nat)						98	92	83				77	68	87	56	43	57	51	64	36
Annual Average (State)							31.4	28				24.3		19	21	15.9	19.9	21.8	21.3	
Annual Average (Nat)						36.2	31.4	28				24.3	19.9	18.4	21.2	14.8	19.2	20.9	20.8	18.5
Calc Days Above State 24-Hr Std							35	29				12		12	6	0	13	6	13	
Calc Days Above Nat 24-Hr Std						0	0	0				0	0	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							4.6	4.6												
Max. 1-Hr. Concentration							10	9												
Max. 8-Hr. Concentration							4.5	3.5												
Days Above State 8-Hr. Std.							0	0												
Days Above Nat. 8-Hr. Std.							0	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