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Code of Federal Regulations (Last Updated: May 6, 2024) |
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Title 40 - Protection of Environment |
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Chapter I - Environmental Protection Agency |
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SubChapter C - Air Programs |
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Part 63 - National Emission Standards for Hazardous Air Pollutants for Source Categories |
Table 25 - Effective Column Diameter (Fc)
- Latest Version
- Updated Versions
- Thursday, April 4, 2024
- Wednesday, April 3, 2024
- Wednesday, March 6, 2024
- Monday, October 2, 2023
- Friday, September 1, 2023
- Tuesday, May 30, 2023
- Wednesday, March 29, 2023
- Monday, March 20, 2023
- Wednesday, March 8, 2023
- Thursday, February 23, 2023
- Wednesday, February 22, 2023
- Thursday, December 22, 2022
- Monday, December 5, 2022
- Thursday, November 10, 2022
- Thursday, October 6, 2022
- Monday, August 29, 2022
- Monday, August 22, 2022
- Wednesday, August 10, 2022
- Thursday, July 21, 2022
- Monday, May 23, 2022
- Friday, May 6, 2022
- Tuesday, March 22, 2022
- Wednesday, March 9, 2022
- Monday, February 14, 2022
- Friday, February 4, 2022
- Wednesday, January 5, 2022
- Friday, November 19, 2021
- Thursday, November 18, 2021
- Tuesday, September 28, 2021
- Wednesday, September 22, 2021
- Friday, September 17, 2021
- Thursday, July 1, 2021
- Monday, April 26, 2021
- Thursday, March 11, 2021
- Wednesday, January 20, 2021
- Tuesday, January 19, 2021
- Monday, January 18, 2021
- Friday, January 1, 2021
- Monday, December 28, 2020
- Tuesday, December 15, 2020
- Wednesday, December 9, 2020
- Monday, December 7, 2020
- Friday, December 4, 2020
- Wednesday, November 25, 2020
- Thursday, November 19, 2020
- Thursday, November 12, 2020
- Thursday, November 5, 2020
- Tuesday, November 3, 2020
- Tuesday, October 13, 2020
- Wednesday, October 7, 2020
- Wednesday, September 16, 2020
- Thursday, September 10, 2020
- Wednesday, September 9, 2020
- Friday, August 28, 2020
- Friday, August 21, 2020
- Tuesday, August 18, 2020
- Friday, August 14, 2020
- Thursday, August 13, 2020
- Wednesday, August 12, 2020
- Tuesday, July 28, 2020
- Friday, July 24, 2020
- Wednesday, July 22, 2020
- Monday, July 13, 2020
- Friday, July 10, 2020
- Thursday, July 9, 2020
- Wednesday, July 8, 2020
- Tuesday, July 7, 2020
- Monday, July 6, 2020
- Thursday, July 2, 2020
- Wednesday, June 3, 2020
- Tuesday, May 19, 2020
- Monday, April 20, 2020
- Wednesday, April 15, 2020
- Thursday, March 26, 2020
- Friday, March 20, 2020
- Wednesday, March 18, 2020
- Monday, March 16, 2020
- Thursday, March 12, 2020
- Monday, March 9, 2020
- Tuesday, February 25, 2020
- Tuesday, February 18, 2020
- Tuesday, February 4, 2020
- Friday, November 1, 2019
- Friday, August 23, 2019
- Monday, August 19, 2019
- Friday, August 16, 2019
- Monday, July 29, 2019
- Wednesday, July 17, 2019
- Tuesday, June 25, 2019
- Thursday, May 23, 2019
- Wednesday, May 15, 2019
- Tuesday, April 30, 2019
- Thursday, April 4, 2019
- Friday, March 15, 2019
- Thursday, March 7, 2019
- Tuesday, March 5, 2019
- Monday, March 4, 2019
- Thursday, February 28, 2019
- Tuesday, February 12, 2019
- Monday, February 11, 2019
- Friday, February 8, 2019
- Monday, January 14, 2019
- Tuesday, January 1, 2019
- Monday, November 26, 2018
- Wednesday, November 21, 2018
- Wednesday, November 14, 2018
- Wednesday, October 24, 2018
- Monday, October 22, 2018
- Friday, October 19, 2018
- Monday, October 15, 2018
- Friday, October 12, 2018
- Monday, September 24, 2018
- Wednesday, September 12, 2018
- Thursday, August 16, 2018
- Wednesday, July 25, 2018
- Monday, July 2, 2018
- Tuesday, June 5, 2018
- Monday, June 4, 2018
- Friday, April 13, 2018
- Tuesday, March 13, 2018
- Monday, March 5, 2018
- Monday, January 29, 2018
- Friday, January 12, 2018
- Monday, January 1, 2018
- Tuesday, December 26, 2017
- Monday, December 11, 2017
- Thursday, December 7, 2017
- Tuesday, December 5, 2017
- Sunday, November 26, 2017
- Wednesday, November 22, 2017
- Thursday, November 16, 2017
- Thursday, November 9, 2017
- Wednesday, November 1, 2017
- Thursday, October 26, 2017
- Tuesday, October 24, 2017
- Monday, October 16, 2017
- Wednesday, October 11, 2017
- Thursday, September 28, 2017
- Tuesday, September 12, 2017
- Thursday, September 7, 2017
- Monday, August 28, 2017
- Tuesday, August 22, 2017
- Thursday, July 27, 2017
- Monday, July 10, 2017
- Wednesday, July 5, 2017
- Thursday, June 29, 2017
- Friday, June 23, 2017
- Thursday, May 11, 2017
- Thursday, April 6, 2017
- Wednesday, January 18, 2017
- Tuesday, January 17, 2017
- Tuesday, January 3, 2017
- Sunday, January 1, 2017
- Monday, October 31, 2016
- Wednesday, October 5, 2016
- Wednesday, September 14, 2016
- Monday, September 12, 2016
- Thursday, September 8, 2016
- Thursday, September 1, 2016
- Tuesday, August 30, 2016
- Wednesday, August 24, 2016
- Wednesday, August 3, 2016
- Monday, July 25, 2016
- Wednesday, July 13, 2016
- Tuesday, June 14, 2016
- Friday, April 22, 2016
- Thursday, April 7, 2016
- Monday, February 1, 2016
- Thursday, January 28, 2016
- Friday, January 1, 2016
- Monday, December 28, 2015
- Tuesday, December 8, 2015
- Friday, December 4, 2015
- Wednesday, December 2, 2015
- Friday, November 20, 2015
- Friday, October 30, 2015
- Monday, October 26, 2015
- Thursday, October 15, 2015
- Friday, September 18, 2015
- Monday, September 14, 2015
- Wednesday, August 26, 2015
- Wednesday, August 19, 2015
- Wednesday, July 29, 2015
- Monday, July 27, 2015
- Wednesday, July 22, 2015
- Tuesday, June 30, 2015
- Wednesday, June 24, 2015
- Friday, May 29, 2015
- Monday, April 27, 2015
- Tuesday, April 21, 2015
- Monday, April 20, 2015
- Friday, April 3, 2015
- Tuesday, March 24, 2015
- Friday, March 20, 2015
- Wednesday, March 18, 2015
- Thursday, February 26, 2015
- Thursday, February 19, 2015
- Wednesday, February 4, 2015
- Monday, February 2, 2015
- Monday, January 26, 2015
- Wednesday, January 14, 2015
- Thursday, January 1, 2015
- Tuesday, November 25, 2014
- Wednesday, November 19, 2014
- Wednesday, November 12, 2014
- Wednesday, October 8, 2014
- Tuesday, September 23, 2014
- Wednesday, September 10, 2014
- Friday, August 15, 2014
- Thursday, March 27, 2014
- Tuesday, March 4, 2014
- Thursday, February 27, 2014
- Thursday, January 30, 2014
- Friday, January 3, 2014
- Wednesday, January 1, 2014
- Monday, December 30, 2013
- Wednesday, December 11, 2013
- Monday, October 21, 2013
- Friday, October 11, 2013
- Thursday, October 3, 2013
- Friday, August 30, 2013
- Tuesday, June 25, 2013
- Thursday, June 20, 2013
- Wednesday, May 15, 2013
- Friday, May 3, 2013
- Tuesday, April 30, 2013
- Wednesday, April 24, 2013
- Wednesday, April 3, 2013
- Monday, April 1, 2013
- Tuesday, March 12, 2013
- Tuesday, February 12, 2013
- Friday, February 1, 2013
- Wednesday, January 30, 2013
- Friday, January 11, 2013
- Tuesday, January 1, 2013
- Wednesday, December 26, 2012
- Friday, December 21, 2012
- Wednesday, December 19, 2012
- Friday, November 2, 2012
- Monday, October 15, 2012
- Wednesday, October 10, 2012
- Thursday, September 27, 2012
- Wednesday, September 19, 2012
- Tuesday, September 11, 2012
- Monday, September 10, 2012
- Friday, August 17, 2012
- Thursday, August 16, 2012
- Thursday, August 2, 2012
- Thursday, July 12, 2012
- Monday, July 2, 2012
- Monday, April 30, 2012
- Thursday, April 19, 2012
- Tuesday, April 17, 2012
- Monday, April 16, 2012
- Wednesday, April 11, 2012
- Tuesday, March 13, 2012
- Friday, March 9, 2012
- Monday, February 27, 2012
- Tuesday, February 21, 2012
- Thursday, February 16, 2012
- Wednesday, January 25, 2012
- Wednesday, January 4, 2012
- Sunday, January 1, 2012
- Wednesday, December 28, 2011
- Thursday, December 1, 2011
- Monday, November 21, 2011
- Tuesday, November 15, 2011
- Tuesday, November 1, 2011
- Thursday, April 21, 2011
- Monday, January 24, 2011
- Tuesday, January 18, 2011
- Saturday, January 1, 2011
- Thursday, September 9, 2010
- Friday, August 20, 2010
- Wednesday, March 3, 2010
- Tuesday, January 5, 2010
- Friday, January 1, 2010
- Thursday, December 3, 2009
- Wednesday, December 2, 2009
- Wednesday, October 28, 2009
- Thursday, June 25, 2009
- Thursday, January 1, 2009
- Tuesday, July 1, 2008
- Friday, January 18, 2008
- Thursday, January 10, 2008
- Wednesday, January 9, 2008
- Tuesday, January 1, 2008
- Monday, July 16, 2007
- Thursday, May 3, 2007
- Tuesday, April 24, 2007
- Tuesday, January 23, 2007
- Monday, January 1, 2007
- Friday, December 22, 2006
- Wednesday, December 20, 2006
- Wednesday, November 29, 2006
- Friday, July 28, 2006
- Friday, July 14, 2006
- Thursday, July 13, 2006
- Thursday, February 16, 2006
- Sunday, January 1, 2006
- Wednesday, December 28, 2005
- Monday, December 19, 2005
- Wednesday, October 12, 2005
- Thursday, August 25, 2005
- Saturday, January 1, 2005
- Monday, November 29, 2004
- Monday, September 13, 2004
- Friday, July 30, 2004
- Tuesday, June 15, 2004
- Monday, April 26, 2004
- Thursday, April 22, 2004
- Monday, April 19, 2004
- Friday, March 5, 2004
- Tuesday, February 3, 2004
- Monday, January 5, 2004
- Friday, January 2, 2004
- Thursday, January 1, 2004
- Friday, December 19, 2003
- Thursday, December 11, 2003
- Thursday, November 13, 2003
- Monday, November 10, 2003
- Thursday, October 30, 2003
- Friday, October 10, 2003
- Wednesday, October 8, 2003
- Monday, June 23, 2003
- Thursday, May 29, 2003
- Wednesday, May 28, 2003
- Tuesday, May 27, 2003
- Friday, May 23, 2003
- Thursday, May 22, 2003
- Tuesday, May 20, 2003
- Friday, May 16, 2003
- Wednesday, May 7, 2003
- Monday, April 21, 2003
- Thursday, April 17, 2003
- Wednesday, April 16, 2003
- Monday, April 14, 2003
- Tuesday, February 18, 2003
- Thursday, January 16, 2003
- Wednesday, January 1, 2003
- Wednesday, December 4, 2002
- Monday, October 21, 2002
- Friday, October 18, 2002
- Tuesday, September 24, 2002
- Tuesday, July 23, 2002
- Friday, July 12, 2002
- Tuesday, July 9, 2002
- Thursday, June 13, 2002
- Wednesday, June 12, 2002
- Tuesday, June 11, 2002
- Monday, June 10, 2002
- Thursday, April 11, 2002
- Friday, April 5, 2002
- Wednesday, February 27, 2002
- Wednesday, February 13, 2002
- Tuesday, January 1, 2002
- Friday, November 2, 2001
- Wednesday, August 22, 2001
- Wednesday, June 27, 2001
- Monday, May 21, 2001
- Thursday, April 12, 2001
- Monday, January 22, 2001
- Friday, January 12, 2001
- Monday, January 8, 2001
- Monday, January 1, 2001
- Thursday, September 14, 2000
- Tuesday, August 29, 2000
- Wednesday, August 2, 2000
- Monday, June 19, 2000
- Thursday, March 23, 2000
- Thursday, January 20, 2000
- Saturday, January 1, 2000
- Monday, November 22, 1999
- Tuesday, October 26, 1999
- Thursday, September 30, 1999
- Tuesday, July 20, 1999
- Tuesday, June 29, 1999
- Wednesday, June 23, 1999
- Tuesday, June 22, 1999
- Thursday, June 17, 1999
- Monday, June 14, 1999
- Thursday, June 10, 1999
- Friday, June 4, 1999
- Tuesday, June 1, 1999
- Thursday, May 20, 1999
- Friday, January 1, 1999
- Monday, September 21, 1998
- Wednesday, April 15, 1998
- Thursday, January 1, 1998
- Tuesday, October 7, 1997
- Friday, June 13, 1997
- Friday, January 17, 1997
- Wednesday, January 1, 1997
- Friday, December 27, 1996
- Thursday, September 12, 1996
- Thursday, September 5, 1996
- Sunday, September 1, 1996
- Monday, July 1, 1996
- Tuesday, June 18, 1996
- Thursday, May 30, 1996
- Tuesday, May 21, 1996
- Monday, April 22, 1996
- Friday, December 15, 1995
- Thursday, December 7, 1995
- Tuesday, September 19, 1995
- Friday, September 1, 1995
- Friday, August 18, 1995
- Monday, April 10, 1995
- Wednesday, March 8, 1995
- Wednesday, January 25, 1995
- Thursday, December 15, 1994
- Wednesday, December 14, 1994
- Tuesday, December 6, 1994
- Friday, December 2, 1994
- Thursday, September 8, 1994
- Friday, May 20, 1994
- Friday, April 22, 1994
- Wednesday, March 16, 1994
- Monday, November 29, 1993
- Wednesday, October 27, 1993
- Wednesday, September 22, 1993
- Tuesday, December 29, 1992
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Related Notices
- 2024-05906. Final action; reconsideration of final rule. 2024-05906. National Emission Standards for Hazardous Air Pollutants: Ethylene Production, Miscellaneous Organic Chemical Manufacturing, Organic Liquids Distribution (Non-Gasoline), and Petroleum Refineries Reconsideration
- 2024-05850. Final rule. 2024-05850. National Emission Standards for Hazardous Air Pollutants: Integrated Iron and Steel Manufacturing Facilities Technology Review
- 2024-02305. Final rule. 2024-02305. National Emission Standards for Hazardous Air Pollutants: Taconite Iron Ore Processing
- 2023-26119. Proposed rule. 2023-26119. Removal of Affirmative Defense Provisions From the National Emission Standards for Hazardous Air Pollutants for the Oil and Natural Gas Production Facility and Natural Gas Transmission and Storage Facility Source Categories
- 2023-18696. Final rule. 2023-18696. Approval of the Clean Air Act, Authority for Hazardous Air Pollutants: Air Emissions Standards for Halogenated Solvent Cleaning Machines; State of Rhode Island Department of Environmental Management Read More »
Latest version.
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Column type F c (feet)9-inch by 7-inch built-up columns 1.1 8-inch-diameter pipe columns 0.7 No construction details known 1.0
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