2002 Almanac (page 380)  Table A-67  Sacramento Valley - Solano County - Air Quality Trends*																				

OZONE (ppm)	1981	1982	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000
Peak 1-Hour Indicator	0.109	0.106	0.094	0.085	0.081	0.093	0.112	0.108	0.112	0.104					0.114	0.113	0.113	0.117	0.121	0.12
National 1-Hr. Design Value	0.11	0.11	0.09	0.08	0.08	0.09	0.11	0.11	0.12	0.1					0.102	0.106	0.106	0.123	0.123	0.123
Nat. 8-Hr. Design Value	0.078	0.069	0.055	0.051	0.047	0.055	0.066	0.079	0.082	0.075					0.079	0.079	0.076	0.082	0.085	0.085
Maximum 1-Hr. Concentration	0.11	0.1	0.08	0.1	0.07	0.09	0.12	0.1	0.12	0.11					0.115	0.126	0.105	0.137	0.14	0.1
Max. 8-Hr. Concentration	0.086	0.065	0.052	0.07	0.052	0.066	0.102	0.088	0.101	0.088					0.09	0.101	0.083	0.101	0.106	0.081
Days Above State Standard	2	1	0	1	0	0	12	2	4	1					6	8	3	10	8	2
Days Above Nat. 1-Hr. Std.	0	0	0	0	0	0	0	0	0	0					0	1	0	2	1	0
Days Above Nat. 8-Hr. Std.	1	0	0	0	0	0	8	2	1	1					3	2	0	7	8	0

PM10 (ug/m3)	1981	1982	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000
Max. 24-Hour Concentration								81	109	96	98	70	53	76	62	45	74	56	66	47
Max. Annual Geometric Mean												21.2		19.2	16.8	15.4	14.4	15.2	17	16.3
Calc Days Above State 24-Hr Std								24	30	36	72	24	6	18	12	0	6	6	18	0
Calc Days Above Nat 24-Hr Std								0	0	0	0	0	0	0	0	0	0	0	0	0

CARBON MONOXIDE (ppm)	1981	1982	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000
Peak 8-Hr. Indicator																				
Max. 1-Hr. Concentration								4												
Max. 8-Hr. Concentration								1.8												
Days Above State 8-Hr. Std.								0												
Days Above Nat. 8-Hr. Std.								0												

NITROGEN DIOXIDE (ppm)	1981	1982	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000
Peak 1-Hr. Indicator																				
Max. 1-Hr. Concentration																				
Max. Annual Average																				

SULFUR DIOXIDE (ppm)	1981	1982	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000
Peak 1-Hr. Indicator																				
Max. 24-Hr. Concentration
Max. Annual Average

* A portion of Solano County lies within the San Francisco Bay Area Air Basin.