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Area Designations for 1997 Ground-level Ozone Standards

Region 10: State Designations for the 1997 8-Hour Ozone Standard

Boundary Designations for the 1997 8-Hour Ozone Standard - EPA Region 10
(as of September 18, 2009)

Map showing designations for region 10 map legend

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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. See also the table of redesignated areas.

State
Nonattainment Area Name
Counties
April 15, 2004 Classification
Maximum
Attainment Date
(from June 15, 2004)
Current/Proposed Classification Resdesignation Effective Date
Alaska
entire state is attainment
Idaho entire state is attainment
Oregon entire state is attainment
Washington entire state is attainment

Region 10 Recommendations and EPA Responses

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