Below are EPA's final actions on the Regional Haze SIPs for each of the six EPA Region 8 states.
You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.- EPA's Final Action on Colorado's Regional Haze SIP (PDF)(13 pp, 293 K)
- EPA's Final Action on Montana's Regional Haze SIP (PDF)(57 pp, 671 K)
- EPA's Final Action on North Dakota's Regional Haze SIP (PDF)(52 pp, 523 K)
- EPA's Final Action on South Dakota's Regional Haze SIP (PDF)(13 pp, 312 K)
- EPA's Final Action on Utah's Regional Haze SIP (PDF)(18 pp, 341 K)
- EPA's Final Action on Wyoming's 309(S02) Regional Haze SIP (PDF)(9 pp, 287 K)
- EPA’s Final Action on Wyoming’s 309(G)(NOx & PM) Regional Haze Plan (PDF)(192 pp, 1 MB)