2002 Almanac (page 424)  Table B-12  PM10:  Calculated Days Above National 24-Hour Standard																				

AIR BASIN	1981	1982	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000
GREAT BASIN VALLEYS								12	24	12	6	18	9	6	12	6	14	16	8	13
LAKE COUNTY								0	0	0	0	0	0	0	0	0	0	0	0	0
LAKE TAHOE								0	0	0	0	0	0	0	0	0	0	0	0	0
MOJAVE DESERT								0	6	12	18	6	0	0	6	0	0	6	0	0
MOUNTAIN COUNTIES								6	0	9	12	0	0	0	0	0	0	0	0	0
NORTH CENTRAL COAST								0	0	0	0	0	0	0	0	0	0	0	0	0
NORTH COAST								0	0	6	0	0	0	0	0	0	0	0	0	0
NORTHEAST PLATEAU								0	0	0	0	0	0	0	0	6	0	0	0	0
SACRAMENTO VALLEY								0	0	0	0	0	0	0	0	0	0	0	6	0
SALTON SEA*								6	24	24	18	6	12	18	12	30	24	12	30	33
SAN DIEGO								0	0	0	0	0	6	0	0	0	0	0	0	0
SAN FRANCISCO BAY AREA								0	0	6	3	0	0	0	0	0	0	0	0	0
SAN JOAQUIN VALLEY								27	36	30	24	6	18	12	9	0	6	6	9	0
SOUTH CENTRAL COAST								0	0	0	0	0	0	0	0	0	6	0	0	0
SOUTH COAST								30	33	18	12	12	18	6	24	6	6	0	6	0

*  Salton Sea PM10 statistics exclude data from the Calexico-East site because data from this site do not represent widespread exposure.