{{Use American English|date=June 2025}} '''Best Available Retrofit Technology''' ('''BART''') is a pollution control standard in the United States Clean Air Act.
== Overview == A BART review is required by sections 169A<ref name="CAA 7491">United States. Clean Air Act (CAA). Visibility protection for Federal class I areas. {{usc|42|7491}}</ref> and 169B<ref>CAA. Visibility. {{usc|42|7492}}</ref> of the Clean Air Act for pollution sources which might cause haze in a "Federal Class 1 area". An example of such a source is the Navajo Generating Station in Page, Arizona which could affect visibility in Grand Canyon National Park.<ref>{{cite web |title=Air Actions, Navajo Nation |url=https://www3.epa.gov/region9/air/navajo/ |archive-url=https://web.archive.org/web/20110206041730/http://www.epa.gov/region9/air/navajo/ |url-status=dead |archive-date=February 6, 2011 |date=2014-07-28 |publisher=United States Environmental Protection Agency (EPA) |location=San Francisco, CA}}</ref><ref>EPA (Washington, D.C.) (2005-07-06). "Regional Haze Regulations and Guidelines for Best Available Retrofit Technology (BART) Determinations; Final rule." ''Federal Register,'' {{usfr|70|39103}}</ref> BART provisions were included in the "Clean Air Visibility Rule," published by the United States Environmental Protection Agency (EPA) in 1999, and amended in 2005.<ref>{{cite web |title=Final Clean Air Visibility Rule Will Restore Visibility in America's National Parks and Wilderness Areas |url=https://19january2017snapshot.epa.gov/visibility/final-clean-air-visibility-rule-will-restore-visibility-americas-national-parks-and_.html |date=2016-09-26 |publisher=EPA}}</ref>
== Determining best available retrofit technology == The Clean Air Act defines Best available retrofit technology:<blockquote>... in determining best available retrofit technology the State (or the Administrator in determining emission limitations which reflect such technology) shall take into consideration the costs of compliance, the energy and nonair quality environmental impacts of compliance, any existing pollution control technology in use at the source, the remaining useful life of the source, and the degree of improvement in visibility which may reasonably be anticipated to result from the use of such technology; <ref name="CAA 7491"/></blockquote>
==Navajo Generating Station== A BART review may take into account the interests of stakeholders associated with the source. In the case of Navajo Generating Station, EPA solicited input from stakeholders: the Department of the Interior, the Central Arizona Project, the Navajo Nation, the Gila River Indian Community, the Salt River Project, the Environmental Defense Fund, and Western Resources Advocates. A technical working group negotiated a "Reasonable Progress Alternative to BART" which was submitted by the Department of the Interior to the EPA on July 26, 2013 for consideration in development of a final rule.<ref name=ICT72613>{{cite news |title=Coming Clean: Historic Agreement Reached for Navajo Generating Station |url=http://indiancountrytodaymedianetwork.com/2013/07/26/historic-agreement-reached-navajo-generating-station-150606 |accessdate=July 27, 2013 |newspaper=Indian Country Today |date=July 26, 2013 |author=ICTMN Staff |archive-url=https://web.archive.org/web/20130728114718/http://indiancountrytodaymedianetwork.com/2013/07/26/historic-agreement-reached-navajo-generating-station-150606 |archive-date=July 28, 2013 |url-status=dead }}</ref><ref name=DOI72613>{{cite news |title=Historic Agreement Reached for Navajo Generating Station: Plan Proposes Collaborative Path Forward for Reduced Emissions, Continued Power Generation, and Clean Energy Development |url=http://www.doi.gov/news/pressreleases/historic-agreement-reached-for-navajo-generating-station.cfm|accessdate=July 27, 2013 |newspaper=Department of the Interior|date=July 26, 2013|format=press release}}</ref><ref name=NGSalternative>{{cite web |title=Technical Work Group Agreement Related to Navajo Generating Station |url=http://www.doi.gov/upload/7-25-2013-NGS-TWG-Agreement-FINAL_Executed.pdf |publisher=Department of the Interior |date=July 25, 2013 |access-date=July 27, 2013 |archive-date=August 6, 2013 |archive-url=https://web.archive.org/web/20130806001759/http://www.doi.gov/upload/7-25-2013-NGS-TWG-Agreement-FINAL_Executed.pdf |url-status=dead }}</ref> (The plant ceased commercial power generation in 2019.<ref>{{cite news |url=https://www.nhonews.com/news/2019/nov/18/navajo-generating-station-shuts-down-permanently |title=Navajo Generating Station shuts down permanently |last=Locke |first=Katherine |work=Navajo-Hopi Observer |date=November 18, 2019}}</ref>)
==Notes and references== {{Reflist}}
==External links and further reading== * [https://www.epa.gov/visibility Visibility and Regional Haze] - EPA ** [https://www.epa.gov/visibility/visibility-regional-planning-organizations Regional Planning Organizations] - EPA * [https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=P10006MA.txt "Regulatory Impact Analysis For The Final Clean Air Visibility Rule Or The Guidelines For Best Available Retrofit Technology (BART) Determinations Under The Regional Haze Regulations" (2005)] - EPA
Category:Air pollution in the United States Category:Environmental technology Category:United States federal environmental legislation