2002 Almanac (page 355)  Table A-42  Mountain Counties - Calaveras 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														0.121	0.118	0.123	0.124	0.128	0.123	0.124
National 1-Hr. Design Value														0.114	0.117	0.129	0.13	0.13	0.124	0.124
Nat. 8-Hr. Design Value														0.099	0.096	0.097	0.093	0.096	0.096	0.1
Maximum 1-Hr. Concentration														0.121	0.146	0.138	0.14	0.134	0.126	0.134
Max. 8-Hr. Concentration														0.108	0.107	0.112	0.112	0.109	0.106	0.105
Days Above State Standard														35	23	24	6	27	21	16
Days Above Nat. 1-Hr. Std.														0	1	3	1	1	1	1
Days Above Nat. 8-Hr. Std.														34	19	18	4	28	18	17

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														44	118	36	112	35	65	35
Max. Annual Geometric Mean															17.7	15.6		13.9	18.1	16.1
Calc Days Above State 24-Hr Std														0	12	0	6	0	12	0
Calc Days Above Nat 24-Hr Std														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														0.7	1	0.9	0.9	0.9	0.9	0.8
Max. 1-Hr. Concentration														1.5	2.1	1.7	2.1	1.8	1.8	1.2
Max. 8-Hr. Concentration														0.7	1.8	0.9	1.7	0.9	0.8	0.9
Days Above State 8-Hr. Std.														0	0	0	0	0	0	0
Days Above Nat. 8-Hr. Std.														0	0	0	0	0	0	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