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Samuel Pickerill focuses on environmental regulatory, compliance, litigation, and legislative matters. He frequently represents clients in energy transition industries, including carbon capture, utilization, and sequestration (CCUS), conventional and advanced biofuels, sustainable aviation fuel, and clean hydrogen. Samuel's experience spans the Clean Air Act (CAA), Safe Drinking Water Act (SDWA), National Environmental Protection Act (NEPA), Endangered Species Act (ESA), and various other federal and state environmental statutes. He also advises clients on permitting, federal funding applications, and clean energy tax credits including under the Inflation Reduction Act (IRA). In addition, Samuel maintains an active pro-bono practice, representing Afghan and Ukrainian refugees seeking humanitarian parole and temporary protected status.

Samuel graduated cum laude from Georgetown University Law Center, where he received a Certificate in International Trade Law for his clinic-based work on border carbon adjustments with the Harrison Institute.


  • Major multinational energy company in relation to legislation, regulations, funding applications, and tax incentives relevant to Carbon Capture and Sequestration projects.
  • Ethanol industry in regulatory issues under EPA’s Renewable Fuel Standard and related litigation in the D.C. Circuit.
  • Sustainable Aviation Fuel producers in regulatory issues arising under EPA’s Renewable Fuel Standard, the Inflation Reduction Act, the Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA), and various state programs.
  • Multiple clients in assistance on regulatory, tax, and policy issues arising under the Inflation Reduction Act.
    Design and maintain public database on state Carbon Capture and Sequestration legal frameworks.



  • J.D., cum laude; Certificate in WTO and International Trade Law, Georgetown University Law Center, 2021
  • B.A., Environmental Science & Policy; Certificate in Energy & the Environment, Duke University, 2018


  • District of Columbia