Appendix A	Sacramento Valley Air Basin - County: Colusa					Table A-64														

OZONE (ppm)	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004
Peak 1-Hour Indicator	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	0.088
Peak 8-Hour Indicator	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	0.076
4th High 1-Hr. in 3 Yrs	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	0.089
Avg. of 4th High 8-Hr. in 3 Yrs	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	0.069
Maximum 1-Hr. Concentration	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	0.084
Max. 8-Hr. Concentration	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	0.073
Days Above State Standard	7	12	28				1	8	3	4	6	6	0	2	1	0	5	0	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.	4	5	21				0	3	2	2	2	4	0	1	1	0	3	0	0	0

PM10 (ug/m3)	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004
Max. 24-Hr. Concentration (State)				98	72	93	102	84	70	57	93	57	57	59	172	55	76	64	69	125
Max. 24-Hr. Concentration (Nat)				98	72	93	102	84	70	57	93	57	57	58	171	55	74	62	68	126
Annual Average (State)					29.8	31.3		29.9	25	28.9			25.1	20			25.2			43.2
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	42.6
Calc Days Above State 24-Hr Std					35	35		42	20	26			12	6			7			109
Calc Days Above Nat 24-Hr Std				0	0	0	0	0	0	0	0	0	0	0	6	0	0	0	0	0

PM2.5 (ug/m3)	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004
Max. 24-Hr. Concentration (State)														37	55	28	36	57	30	44.6
Max. 24-Hr. Concentration (Nat)														37	55	28	36	57	30	38
98th Percentile of 24-Hr Conc.																26	31		27	34
Annual Average (State)																	9.6			7.3
Avg. of Qtrly. Means (Nat)																8	9.6		8	7.3

CARBON MONOXIDE (ppm)	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004
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)	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004
Peak 1-Hr. Indicator																				
Max. 1-Hr. Concentration																				
Max. Annual Average																				

SULFUR DIOXIDE (ppm)	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004
Peak 1-Hr. Indicator																				
Max. Annual Average																				
Max. 24-Hr. Concentration