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

1997 PM2.5 Standards — Region 9 State Designations

Boundary Designations for the 1997 PM2.5 Standard - EPA Region 9

Map showing PM2.5 designations for 1997 standard for Region 9 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
Arizona Entire state is attainment/unclassifiable
California* Los Angeles-South Coast Air Basin, CA Los Angeles (P)
Orange
Riverside (P)
San Bernardino(P)
San Joaquin Valley, CA Fresno
Kern (P)
Kings
Madera
Merced
San Joaquin
Stanislaus
Tulare 
Hawaii Entire state is attainment/unclassifiable
Nevada Entire state is attainment/unclassifiable
*See correspondence related to the April, 2005 supplemental notice for information about changes to designations since the December, 2004 action.

Region 9 Recommendations and EPA Responses

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