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

1997 PM2.5 Standards — Region 8 Recommendations and EPA Responses

Information provided for informational purposes only Note: EPA no longer updates this information, but it may be useful for historical purposes. See the PM Designations Home Page for more recent information about PM Designations.

EPA has requested that states and tribes submit recommendations to EPA for PM2.5 attainment and nonattainment areas by February 15, 2004. EPA responded to state and tribal recommendations on April 28 and 29, 2004, and designations will be finalized by the end of 2004.

State recommendations and EPA response letters are presented below.

Tribal information is available on the Tribal Recommendations page.

EPA Intended Designations (Not Final)

EPA will make official designations by the end of 2004. A map showing the states' recommendations is available below the recommendation and response documents.

Map showing counties intended for PM2.5 non-attainment June 29, 2004
Counties intended for nonattainment (whole or part) are shaded red on the map.  Unclassifiable counties are shaded gold, and the remainder Attainment/Unclassifiable are in tan.
View Recommendations in tabular form

Recommendation Documents

You will need Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more.

The documents listed below are state and tribe responses to EPA's request for recommendations on the designation of areas for the PM2.5 standard and EPA's responses to those submittals. These responses are provided here in PDF format for INFORMATIONAL PURPOSES ONLY and do not represent EPA's views on the appropriateness or adequacy of a state's or a tribe's recommendations.

The quality of these PDF files is quite variable and is the result of the quality of the documents provided by the states.

Recommendations received by EPA Region 8

State 2004 Recommendation EPA Response State Remarks on EPA Response
Colorado Letter (PDF) (5 pp, 228KB)
Acknowledgement (PDF) (2 pp, 3.6MB)
Letter (PDF) (2 pp, 1.3MB) Letter (PDF) (1 p, 36KB)
Montana Letter (PDF) (3 pp, 82.9KB)
Appendix 1 (PDF) (20 pp, 14.6MB)
Acknowledgement (PDF) (2 pp, 3.6MB)
Letter (PDF) (11 pp, 10.9MB)
Follow-up  (2 pp, 2.0MB)
Letter (PDF) (2 pp, 798KB)
Letter (PDF) (1 p, 45KB)
North Dakota Letter (PDF) (3 pp, 107KB)
Acknowledgement (PDF) (2 pp, 3.6MB)
Letter (PDF) (2 pp, 1.3MB)  
South Dakota Letter (PDF) (12 pp, 616KB)
Acknowledgement (PDF) (2 pp, 3.6MB)
Letter (PDF) (2 pp, 1.3MB)  
Utah Letter (PDF) (9 pp, 370KB)
Appendix 1 (PDF) (4 pp, 91KB)
Acknowledgement (PDF) (2 pp, 3.6MB)
Letter (PDF) (2 pp, 1.3MB)
Follow-up (PDF)  (1 p, 1020KB)
Letter (PDF) (1 p, 56KB)
Wyoming Letter (PDF) (5 pp, 320KB)
Acknowledgement (PDF) (2 pp, 3.6MB)
Letter (PDF) (2 pp, 1.3MB)
Follow-up  (1 p, 1020KB)

2004 State PM2.5 Designation Recommendations

Map showing counties recommended for PM2.5 non-attainment in 2004
Counties recommended as nonattainment are shaded red on the map, attainment and unclassifiable counties are shaded beige, counties under consideration for nonattainment but not recommended either way are shaded orange, and states and counties for which no recommendation has been received are shaded gray.
States may have made recommendations of partial counties. Any partial counties are shown as whole counties on this map. EPA will make official designations by the end of 2004.

View Recommendations in tabular form

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Region 8 tribal information

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