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Area Designations for 1997 Fine Particle (PM2.5) Standards

1997 PM2.5 Standards — Region 8 State Designations

Boundary Designations for the 1997 PM2.5 Standard - EPA Region 8

Map showing PM2.5 designations for 1997 standard for Region 8 Map legend

This table identifies all counties EPA has designated as nonattainment. In some cases EPA designated partial counties. These are identified by a (P). If a county is not listed below, EPA has designated it as unclassifiable/attainment.

State Area Name Counties
Colorado Entire state is attainment/unclassifiable
Montana Libby, MT Lincoln (P)
North Dakota Entire state is attainment/unclassifiable
South Dakota Entire state is attainment/unclassifiable
Utah Entire state is attainment/unclassifiable
Wyoming Entire state is attainment/unclassifiable

Region 8 Recommendations and EPA Responses

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