Metropolitan Areas Failing to Meet National Ambient Air Quality Standards for Carbon Monoxide--Number of Days Exceeding Standards: 1992 and 1993


[Areas generally represent the officially defined metropolitan area, but may, in some cases, not have all the counties identified as part of the area; see Federal Register, 40 CFR, part 81, Air Quality Designations: Revised, July 1994. Nonattainment status was as of November 1995]

 
METROPOLITAN AREA          1992  1993  1994
--------------------------------------------
Phoenix, AZ ..............   5    -      3
Colorado Springs, CO .....   -    -      -
Denver-Boulder, CO CMSA...   7    2      1
Fort Collins, CO .........   -    -      -
Longmont, CO(1)...........   -    -      -
Albuquerque, NM ..........   -    -      -
Las Vegas, NV ............   2    3      5
Reno, NV..................   -    -      -
Missoula County, MT(1)....   -    -      -
Ogden, UT.................   -    -      -
Provo-Orem, UT ...........   3    2      1
 


Notes: - Represents zero. (1) Not a metropolitan area.

Source: Table No. 376 of the Statistical Abstract of the United States: 1995 and Statistical Abstract of the United States 1996 . U.S. Census Bureau.

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