For more information about National Park Service air resources, please visit http://www.nature.nps.gov/air/.
Regional Haze State Implementation Plan Review
In 1999, the Environmental Protection Agency (EPA) promulgated regulations for the second phase of its visibility protection program to address regional haze. The regulations require States to reduce regional visibility impairment at large National Parks and Wilderness Areas designated as "mandatory Class I areas" under the Clean Air Act. The Clean Air Act established a national goal of returning visibility in these areas to natural conditions. The EPA’s regional haze regulations require each State to develop an implementation plan to reduce emissions of pollutants that contribute to visibility impairment and to make reasonable progress toward the national goal. The Clean Air Act also designated a role for the Federal Land Managers of the Class I areas to consult with States on their implementation plans before those plans go through the public hearing process.
The National Park Service, Air Resources Division and the U.S. Fish and Wildlife Service, Branch of Air Quality, are the lead offices for consultation with the States on behalf of the Department of the Interior. Follow the links below to find the Department of the Interior comments on each State’s draft implementation plans. States not listed below are still developing plans or have submitted plans that are under review.
For links to State air program information on regional haze and additional Federal land manager comments from the U.S. Forest Service, along with those from the U.S. Environmental Protection Agency, visit the U.S. Fish and Wildlife Service Regional Haze Comments web page.
Comments on State Plans
Alabama
- Comment Letter, April 14, 2008 (pdf, 2.3 MB)
Alaska
- Letter to EPA, March 26, 2012 (pdf, 1 MB)
- Comment Letter, December 6, 2010 (pdf, 559 KB)
- Comment Letter, August 23, 2010 (pdf, 57 KB)
Arkansas
- Comment Letter, June 26, 2008 (pdf, 1.2 MB)
Arizona
- Letter to EPA, September 17, 2012 (pdf, 357 KB)
- Comment Letter, December 1, 2010 (pdf, 451 KB)
- General Comments on Arizona BART Analyses, November 29, 2010 (pdf, 40 KB)
- Technical Comments; Salt River Project (SRP)’s Coronado Generating Station BART Analysis and Determination, November 29, 2010 (pdf, 41 KB)
- Comments on Arizona Electric Power Cooperative (AEPCO) – Apache Generating Station BART Analysis and Determination, December 2, 2010 (pdf, 35 KB)
- NPS comments on the Catalyst Paper (Snowflake) Inc. BART Analysis and
Determination
December 2, 2010 (pdf, 28 KB) - Comments on Arizona Department of Environmental Quality BART Exemptions,
December 1, 2010 (pdf, 31 KB) - Technical Comments; Arizona Public Service Cholla Generating Station BART Analysis and Determination, November 29, 2010 (pdf, 35 KB)
- Comments to EPA on Advanced Notice of Proposed Rulemaking and Technical Support Document for Four Corners Power Plant, November 20, 2009 (pdf, 307 KB)
- Comments to EPA on Navajo Generating Station BART Proposal, July 24, 2009 (pdf, 524 KB)
California
- Comment Letter, January 14, 2009 (pdf, 175 KB)
Colorado
- May 25, 2012
- Letter to EPA (pdf, 1.8 MB)
- January 4, 2011
- Comment Letter on Colorado BART Alternative (pdf, 336 KB)
- December 15, 2010
- Comment Letter (pdf, 348 KB)
- Summary Comments on Colorado Reasonable Progress Sources and Craig
Generating Station (pdf, 30 KB) - Technical Comments on BART Analysis of Control Options For Tri-State Generation & Transmission Association, Inc. – Craig Station Units 1 & 2 and Reasonable Progress Analysis of Control Options For Unit 3 (pdf, 42 KB)
- December 6, 2010
- December 1, 2010
- Comments on Colorado Department of Public Health and Environment BART Analyses, Craig Power Plant BART, and Reasonable Progress Determinations (pdf, 466 KB)
- Technical Comments; Craig Power Plant Units 1 and 2 (pdf, 60 KB)
- Technical Comments; Craig Power Plant Unit 3 (pdf, 44 KB)
- November 15, 2010
- Comment Letter and BART Analysis (pdf, 356 KB)
- General Comments on Colorado Department of Public Health and Environment BART Analyses (pdf, 33 KB)
- Technical Comments; CDPHE BART Determination for Cemex’s Lyons Cement Plant (pdf, 61 KB)
- Technical Comments; CDPHE BART Analysis of Control Options for Colorado Energy Nations, Golden, Colorado (pdf, 48 KB)
- Technical Comments; BART Analysis of Control Options for Public Service Company – Comanche Station, Units 1 and 2 (pdf, 40 KB)
- Technical Comments; BART Analysis of Control Options for Colorado Springs Utilities Drake Plant (pdf, 69 KB)
- Technical Comments; BART Analysis of Control Options for Public Service Companies Hayden Station (pdf, 21 KB)
- November 20, 2009
- July 24, 2009
- September 8, 2008
- Comment Letter (pdf, 398 KB)
- December 12, 2007
- Comment Letter (pdf, 304 KB)
Connecticut
- Comment Letter, April 3, 2009 (pdf, 220 KB)
Delaware
- Comment Letter, June 27, 2008 (pdf, 1.7 MB)
District of Columbia
- Comment Letter, March 18, 2010 (pdf, 572 KB)
Hawaii
- Letter to EPA, July 2, 2012 (pdf, 56 KB)
Georgia
- Comment Letter, February 11, 2009 (pdf, 375 KB)
Idaho
- Letter to EPA, June 21, 2012 (pdf, 168 KB)
- Comment Letter, July 23, 2010 (pdf, 310 KB)
Indiana
- Letter to EPA, February 27, 2012 (pdf, 348 KB)
- Comment Letter, January 3, 2011 (pdf, 55 KB)
- Technical Comments on Alcoa BART, January 3, 2011 (pdf, 55 KB)
Iowa
- Comment Letter, January 17, 2008 (pdf, 111 KB)
Kansas
- Comment Letter, December 14, 2007 (pdf, 285 KB)
Kentucky
- Comment Letter, January 25, 2008 (pdf, 168 KB)
Louisiana
- Letter to EPA, March 28, 2012 (pdf, 948 KB)
- Comment Letter, January 22, 2008 (pdf, 2.6 MB)
Maine
- Comment Letter, July 23, 2010 (pdf, 403 KB)
Maryland
- Letter to EPA, March 29, 2012 (pdf, 358 KB)
- Comment Letter, February 10, 2012 (pdf, 932 KB)
Massachusetts
- Comments on proposed BART alternative, April 9, 2012 (pdf, 821 KB)
- Comment Letter, February 17, 2011 (pdf, 400 KB)
- Comment Letter, January 27, 2009 (pdf, 364 KB)
Michigan
- Letter to EPA on BART for Michigan and Minnesota taconite plants, September 28, 2012 (pdf, 118 KB)
- Letter to EPA, September 4, 2012 (pdf, 69 KB)
- Comment Letter, July 10, 2008 (pdf, 398 KB)
Minnesota
- Letter to EPA on BART for Michigan and Minnesota taconite plants, September 28, 2012 (pdf, 118 KB)
- Letter to EPA, February 22, 2012 (pdf, 433 KB)
- Supplement Comment Letter, February 2, 2012 (pdf, 862 KB)
- Comment Letter, May 8, 2008 (pdf, 360 KB)
- Comment Letter, April 4, 2008 (pdf, 1.3 MB)
Mississippi
- Letter to EPA, March 28, 2012 (pdf, 1.2 MB)
- Comment Letter, June 30, 2008 (pdf, 58 KB)
Missouri
- Comment Letter, October 30, 2007 (pdf, 164 KB)
- Comment Letter, December 10, 2007 (pdf, 1.3 MB)
Nebraska
- Letter to EPA, March 30, 2012 (pdf, 651 KB)
- Comment Letter, January 14, 2011 (pdf, 394 KB)
Nevada
- Letter to EPA, August 17, 2011 (pdf, 484 KB)
- Letter to EPA on BART for Reid Gardner Generating Station, June 4, 2012 (pdf, 1.25 MB)
- Letter to EPA, May 12, 2011 (pdf, 28 KB)
- Comment Letter, March 6, 2009 (pdf, 374 KB)
New Hampshire
- Letter to EPA, April 26, 2012 (pdf, 432 KB)
- Comment Letter, December 20, 2010 (pdf, 26 KB)
- Comment Letter, September 26, 2008 (pdf, 219 KB)
New Jersey
- Comment Letter, October 29, 2008 (pdf, 285 KB)
New Mexico
- Comment Letter on Revised SIP, May 25, 2011 (pdf, 41 KB)
- Letter to NM about BART Determination for the San Juan Generating Station, March 31, 2011 (pdf, 1.3 MB)
- Letter to EPA about BART Determination for the San Juan Generating Station, March 31, 2011 (pdf, 970 KB)
- Comment Letter, August 17, 2010 (pdf, 272 KB)
- Comments to EPA on Advanced Notice of Proposed Rulemaking and Technical Support Document for Four Corners Power Plant, November 20, 2009 (pdf, 307 KB)
- Comments to EPA on Navajo Generating Station BART Proposal, July 24, 2009 (pdf, 524 KB)
North Carolina
- Letter to EPA, March 29, 2012 (pdf, 477 KB)
- Comment Letter, October 2, 2007 (pdf, 315 KB)
North Dakota
- Comment Letter on Reasonable Progress for the R. M. Heskett Unit #2
May 14, 2010 (pdf, 160 KB) - Comment Letter, January 8, 2010 (pdf, 160 KB)
Ohio
- Letter to EPA, February 22, 2012 (pdf, 361 KB)
- Comment Letter, February 26, 2009 (pdf, 204 KB)
Oregon
- Comment Letter, PGE BART, November 15, 2010 (pdf, 339 KB)
- Comment Letter, January 30, 2009 (pdf, 257 KB)
Pennsylvania
- Letter to EPA, February 27, 2012 (pdf, 416 KB)
- Comment Letter, August 2, 2010 (pdf, 125 KB)
Rhode Island
- Comment Letter, March 31, 2009 (pdf, 182 KB)
South Carolina
- Comment Letter, October 9, 2007 (pdf, 342 KB)
South Dakota
- Letter to EPA, February 6, 2012 (pdf, 919 KB)
- Comment Letter on revisions, August 17, 2011 (pdf, 426 KB)
- Comment Letter, February 2, 2010 (pdf, 97 KB)
Tennessee
- Comment Letter, Eastman Chemical Company BART, May 4, 2012 (pdf, 23 KB)
- Letter to EPA, July 11, 2011 (pdf, 1.5 MB)
- Comment Letter, December 10, 2007 (pdf, 118 KB)
Texas
- Comment Letter, January 11, 2008 (pdf, 4.1 MB)
Utah
- Letter to EPA, July 13, 2012 (pdf, 1.75 MB)
- Comment Letter, March 4, 2011 (pdf, 542 KB)
- Comments to EPA on Advanced Notice of Proposed Rulemaking and Technical Support Document for Four Corners Power Plant, November 20, 2009 (pdf, 307 KB)
- Comments to EPA on Navajo Generating Station BART Proposal, July 24, 2009 (pdf, 524 KB)
- Comment Letter, August 1, 2008 (pdf, 1.4 MB)
Vermont
- Comment Letter, February 19, 2009 (pdf, 178 KB)
Virgin Islands
- Letter to EPA, August 21, 2012 (pdf, 165 KB)
Virginia
- Letter to EPA, February 23, 2012 (pdf, 536 MB)
- Comment Letter, December 7, 2007 (pdf, 146 KB)
Washington
- Comment Letter, Centralia BART, September 29, 2011 (pdf, 720 KB)
- Comment Letter, Centralia BART, October 6, 2010 (pdf, 63 KB)
- Comment Letter, June 11, 2010 (pdf, 99 KB)
West Virginia
- Comment Letter, October 30, 2007 (pdf, 114 KB)
Wisconsin
- Letter to EPA, March 29, 2012 (pdf, 2 MB)
- Comment Letter, March 10, 2011 (pdf, 524 KB)
Wyoming
- Letter to EPA, August 3, 2012 (pdf, 844 KB)
- Comment Letter, September 15, 2008 (pdf, 558 KB)
- Comment Letter, October 21, 2009 (pdf, 77 KB)
Last Updated: October 10, 2012