Appendix A	North Coast Air Basin - County: Humboldt					Table A-56														

OZONE (ppm)	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
Peak 8-Hour Indicator (State)				0.036	0.042	0.042														
Avg. of 4th High 8-Hr. in 3 Yrs (Nat)						0.034														
Peak 1-Hour Indicator (State)				0.041	0.048	0.048														
4th High 1-Hr. in 3 Yrs2				0.04	0.04	0.04														
Max. 8-Hr. Concentration				0.031	0.042	0.04														0.037
Maximum 1-Hr. Concentration				0.04	0.05	0.04														0.039
Days Above State 8-Hr. Std.				0	0	0														0
Days Above Nat. 8-Hr. Std.				0	0	0														0
Days Above State 1-Hr. Std.				0	0	0														0

PM10 (ug/m3)	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
Max. 24-Hr. Concentration (State)			92	83				77	68	87	56	45	60	53	67	38	71	64	71	72
Max. 24-Hr. Concentration (Nat)		79	92	83				77	68	87	56	43	57	51	64	36	68	61	67	68
Max. Annual Average (State)			31.4	28				24.3		19	21	15.9	19.9	21.8	21.3					21.1
Max. Annual Average (Nat)		15.5	31.4	28				24.3	19.9	18.4	21.2	14.8	19.2	20.9	20.8	18.5	17.8	20.7	13.6	20.4
Calc Days Above State 24-Hr Std			35	29				12		12	6	0	13	6	13					12
Calc Days Above Nat 24-Hr Std			0	0				0	0	0	0	0	0	0	0	0		0		0

PM25 (ug/m3)	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
Max. 24-Hr. Concentration (State)													36.9	24	32.6	23.7	36.1	25.6	31.8	35
Max. 24-Hr. Concentration (Nat)													36.9	24	32.6	23.7	36.1	25.6	31.8	35
98th Percentile of 24-Hr Conc.													27.7		29	22.6	36.1	23.1		
Annual Average (State)													9.1		9.4					
Avg. of Qtrly. Means (Nat)													9.1		9.4	7.9		8.2		

CARBON MONOXIDE (ppm)	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
Peak 8-Hr. Indicator			4.6	4.6																
Max. 1-Hr. Concentration			10	9																1.3
Max. 8-Hr. Concentration			4.5	3.5																1.2
Days Above State 8-Hr. Std.			0	0																0
Days Above Nat. 8-Hr. Std.			0	0																0

NITROGEN DIOXIDE (ppm)	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
Peak 1-Hr. Indicator																				
Max. 1-Hr. Concentration																				0.024
Max. Annual Average (Nat)																				

SULFUR DIOXIDE (ppm)	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
Peak 1-Hr. Indicator																				
Max. Annual Average																				0
Max. 24-Hr. Concentration																				0