Practice Expertise

  • Air
  • Energy and Environmental Litigation
  • Climate Change Law and Policy
  • Climate Change

Areas of Practice

  • Air
  • Climate Change
  • Climate Change Law and Policy
  • Energy and Environmental Litigation
  • Air Quality
  • Energy
  • Energy Litigation
  • Energy Transition
  • Environmental
  • Environmental Compliance, Litigation and ...
  • Native American Trust Lands
  • NEPA
  • Water
  • View More

Profile

Henry’s practice focuses on client counseling and participation in administrative and judicial proceedings under the Clean Air Act, the Clean Water Act, and the National Environmental Policy Act.

For more than 35 years, he has represented clients before EPA, state regulatory agencies and the courts on a broad range of environmental regulatory and enforcement related matters.

Henry has been admitted to practice before the United States Supreme Court, all federal circuit courts of appeals, the District Court for the District of Columbia, the District Court for the Northern District of California and the District of Columbia Court of Appeals.

Relevant Experience

  • Participated in virtually every significant rulemaking under the Clean Air Act, including those involving new source permitting, hazardous air pollution, ambient air quality standards, new source performance standards, noncompliance penalties, visibility protection, tribal air programs, and greenhouse gas regulation.
  • Briefed and argued environmental law cases in federal circuit courts of appeals and federal district courts throughout the country.
  • Developed national environmental compliance and permitting strategies for industrial and utility clients.
  • Defended major Clean Air Act enforcement cases and negotiated complex settlements.

Bar Admissions

  • District of Columbia

Education
BA, University of Virginia, Government, 1965

Areas of Practice

  • Air
  • Climate Change
  • Climate Change Law and Policy
  • Energy and Environmental Litigation
  • Air Quality
  • Energy
  • Energy Litigation
  • Energy Transition
  • Environmental
  • Environmental Compliance, Litigation and Defense
  • Native American Trust Lands
  • NEPA
  • Water

Professional Career

Significant Accomplishments
  • Participated in virtually every significant rulemaking under the Clean Air Act, including those involving new source permitting, hazardous air pollution, ambient air quality standards, new source performance standards, noncompliance penalties, visibility protection, tribal air programs, and greenhouse gas regulation.
  • Briefed and argued environmental law cases in federal circuit courts of appeals and federal district courts throughout the country.
  • Developed national environmental compliance and permitting strategies for industrial and utility clients.
  • Defended major Clean Air Act enforcement cases and negotiated complex settlements.


Professional Associations
  • Member, American Bar Association
  • Member, Federal Bar Association
  • Member, District of Columbia Bar Association

Professional Activities and Experience
  • 2017 Chambers USA Environment Law Firm of the Year
  • “Best Lawyer,” Environmental Law, The Best Lawyers in America, 2001-2014
  • Leader in Environmental Law, District of Columbia, Chambers USA, 2003-2017
  • “Super Lawyer,” Environmental Law, Washington DC Super Lawyers, 2007-2014
  • Who’s Who Legal, The International Who’s Who of Business Lawyers - Environment, 2014 


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