2002 Almanac (page 200)  Table 4-37  Sacramento Valley Air Basin:  PM10 Air Quality Table																				

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								115	139	153	136	111	110	154	145	98	126	130	179	86
Max. Annual Geometric Mean								36.7	35.5	36	37.7	31.4	28.8	30	26.3	25.5	25.3	22.8	30.3	24.7
Calc Days Above State 24-Hr Std								120	84	93	114	96	60	36	66	42	24	60	66	45
Calc Days Above Nat 24-Hr Std								0	0	0	0	0	0	0	0	0	0	0	6	0