Strengths and weaknesses of regulating greenhouse gas emissions using existing Clean Air Act authorities hearing before the Subcommittee on Energy and Air Quality of the Committee on Energy and Commerce, House of Representatives, One Hundred Tenth Congress, second session, April 10, 2008

Clean Air Act mercury control technologies at coal-fired power plants have achieved substantial emissions reductions : report to the Chairman, Subcommittee on Clean Air and Nuclear Safety, Committee on Environment and Public Works, U.S. Senate

Cooperative federalism under the Clean Air Act : state perspectives : hearing before the Subcommittee on Clean Air and Nuclear Safety of the Committee on Environment and Public Works, United States Senate, One Hundred Fifteenth Congress, second session, April 10, 2018

New source review an analysis of the consistency of enforcement actions with the Clean Air Act and implementing regulations

The impact of clean air regulations on natural gas prices hearing before the Subcommittee on Clean Air, Climate Change, and Nuclear Safety of the Committee on Environment and Public Works, United States Senate, One Hundred Ninth Congress, second session, February 9, 2006

Ozone and Particulate Matter Research Act of 1997 : hearing before the Subcommittee on Clean Air, Wetlands, Private Property, and Nuclear Safety of the Committee on Environment and Public Works, United States Senate, One Hundred Fifth Congress, first session on S. 1084, a bill to establish a research and monitoring program for The National Ambient Air Quality Standards for ozone and particulate matter and to reinstate the original standards under the Clean Air Act, and for other purposes, October 22, 1997

Clean Air Act and jobs : joint hearing before the Subcommittee on Clean Air and Nuclear Safety and the Subcommittee on Green Jobs and the New Economy of the Committee on Environment and Public Works, United States Senate, One Hundred Twelfth Congress, first session, March 17, 2011

Legislative hearing on S. 2995 : the Clean Air Act Amendments of 2010 : joint hearing before the Subcommittee on Clean Air and Nuclear Safety and the Committee on Environment and Public Works, United States Senate, One Hundred Eleventh Congress, second session, March 4, 2010

Legislative hearing on S. 517, the Consumer and Fuel Retailer Choice Act : hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Fifteenth Congress, first session, June 14, 2017

EPA's expansion of 112(r) of the 1990 Clean Air Act Amendments to include propane : hearing before the Committee on Small Business, House of Representatives, One Hundred Sixth Congress, first session, Washington, DC, July 29, 1999