Appendix A	Sacramento Valley Air Basin - County: Colusa					Table A-62														

OZONE (ppm)	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003
Peak 1-Hour Indicator	0.11	0.111	0.109	0.112					0.108	0.107	0.102	0.102	0.109	0.101	0.1	0.095	0.094	0.098	0.097	0.096
Peak 8-Hour Indicator	0.092	0.093	0.091	0.097					0.091	0.093	0.091	0.094	0.094	0.088	0.086	0.084	0.082	0.087	0.085	0.084
4th High 1-Hr. in 3 Yrs	0.11	0.1	0.11	0.11				0.09	0.1	0.1	0.1	0.101	0.102	0.098	0.099	0.094	0.094	0.095	0.095	0.095
Avg. of 4th High 8-Hr. in 3 Yrs	0.08	0.082	0.085	0.085				0.073	0.078	0.079	0.082	0.082	0.082	0.077	0.077	0.076	0.075	0.077	0.076	0.075
Maximum 1-Hr. Concentration	0.11	0.11	0.11	0.12				0.1	0.11	0.1	0.107	0.106	0.111	0.093	0.099	0.095	0.092	0.101	0.094	0.089
Max. 8-Hr. Concentration	0.093	0.091	0.088	0.102				0.084	0.092	0.085	0.09	0.09	0.091	0.081	0.088	0.085	0.072	0.088	0.081	0.071
Days Above State Standard	12	7	12	28				1	8	3	4	6	6	0	2	1	0	5	0	0
Days Above Nat. 1-Hr. Std.	0	0	0	0				0	0	0	0	0	0	0	0	0	0	0	0	0
Days Above Nat. 8-Hr. Std.	5	4	5	21				0	3	2	2	2	4	0	1	1	0	3	0	0

PM10 (ug/m3)	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003
Max. 24-Hr. Concentration (State)					98	72	93	102	84	70	57	93	57	57	59	172	55	76	64	69
Max. 24-Hr. Concentration (Nat)					98	72	93	102	84	70	57	93	57	57	58	171	55	74	62	68
Annual Average (State)						29.8	31.3		29.9	25	28.9			25.1	20			25.2		
Annual Average (Nat)					33.5	29.8	30.9		28.7	24.5	28.1	29.9	26.8	24.6	19.5			24.5		23.8
Calc Days Above State 24-Hr Std						35	35		42	20	26			12	6			7		
Calc Days Above Nat 24-Hr Std					0	0	0	0	0	0	0	0	0	0	0	6	0	0	0	0

PM2.5 (ug/m3)	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003
Max. 24-Hr. Concentration (State)															37	55	28	36	57	30
Max. 24-Hr. Concentration (Nat)															37	55	28	36	57	30
98th Percentile of 24-Hr Conc.																	26	31		27
Annual Average (State)																		9.6		
Avg. of Qtrly. Means (Nat)																	8	9.6		8

CARBON MONOXIDE (ppm)	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003
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)	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003
Peak 1-Hr. Indicator																				
Max. 1-Hr. Concentration																				
Max. Annual Average																				

SULFUR DIOXIDE (ppm)	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003
Peak 1-Hr. Indicator																				
Max. Annual Average																				
Max. 24-Hr. Concentration