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Sulfur Dioxide Designations

2010 Sulfur Dioxide Standards — Region 10 State Recommendations and EPA Responses

States' recommendation documents and EPA's responses are available below. The EPA intends to address the designations for all areas in Region 10 in separate future actions.

Tribal information is available on the Tribal Recommendations page.

Region 10

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

State State
Updated State
EPA Response State Remarks
on EPA Response
Alaska Letter (PDF) (2pp, 71k)   Letter (PDF) (2pp, 315k)  
Idaho Letter (PDF) (2pp, 92k)   Letter (PDF) (2pp, 318k)  
Oregon Letter (PDF) (1pg, 160k)   Letter (PDF) (2pp, 1.2 MB)  
Washington Letter (PDF) (1pg, 102k)   Letter (PDF) (2pp, 322k)  

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Region 10 tribal information

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