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Patrick D. Traylor

Washington, D.C.

Patrick D. Traylor
+1 202 637 6866 (Washington, D.C.)
+1 713 632 1490 (Houston)
+1 202 637 5910 (Washington, D.C.)
Practice Group

When companies in the energy sector decide to construct or expand their most complex facilities, they turn to Patrick Traylor to secure project-critical air quality and climate change preconstruction permits. These same companies also rely on Patrick to conduct internal investigations and represent them in Clean Air Act enforcement litigation brought by the EPA and environmental groups.

Dual-listed in Washington D.C. and Houston, clients value Patrick's combination of deep regulatory and policy experience and a practical boots-on-the-ground approach to permitting and compliance.

When it comes to complex facility permitting, clients have turned to Patrick to support tens of billions of dollars' worth of projects at refineries, petrochemical and fertilizer plants, LNG export terminals, coal- and gas-fired power plants, coal mines, and bulk materials terminals. Clients value Patrick's team-based approach to integrating business, technical, and legal perspectives to develop effective and innovative permitting and project development strategies.

Patrick also has deep experience in internal investigations and enforcement defense. For almost 20 years, clients have relied on Patrick to conduct some of their most sensitive internal compliance investigations and represent them in Clean Air Act enforcement cases. In addition to his litigation experience in federal district and appellate courts, clients find that Patrick is particularly skilled at fashioning negotiated settlements where litigation risks prove economically unattractive.

Clients in the wind energy sector also rely on Patrick to secure permits under the Endangered Species Act.

"The expansion of the Four Corners Power Plant and Navajo Mine was an 'against all odds feat' of environmental permitting."

Farmington Daily Times

Representative Experience

Leading the environmental permitting and review work for two LNG export terminals for Venture Global LNG.

Representing a major bulk chemicals terminal operator in response to an EPA enforcement case.

Supported air quality and climate change permitting for a major expansion of a synthetic fertilizer plant for Koch Nitrogen.

Helped secure an "against all odds" series of permits authorizing the expansion of a coal mine on the Navajo Nation for BHP Billiton.

Supported the negotiated implementation of a federal consent decree settlement for INVISTA.

Negotiated and completed a consent decree settlement of Clean Air Act claims at a coal-fired power plant for Southern California Edison.

Supporting air quality and climate change permitting for a major deepwater LNG export terminal.

Supported air quality and climate change permitting for five refinery projects for Flint Hills.

Education and admissions


  • LL.M., The George Washington University Law School, 1998
  • J.D., South Texas College of Law, 1994
  • B.A., Texas A&M University, 1991


  • Member, Boot Camp Steering Committee, Environmental Law Institute  
  • Member, Spring Conference Steering Committee, Environmental Markets Association, 2008
  • Member, Wind Turbine Guidelines Advisory Committee, U.S. Department of the Interior

Bar admissions and qualifications

  • District of Columbia
  • Texas

Court admissions

  • U.S. Court of Appeals, District of Columbia Circuit
  • U.S. Court of Appeals, Tenth Circuit
  • U.S. Court of International Trade
  • U.S. District Court, District of Colorado
  • U.S. District Court, District of Columbia
  • U.S. District Court, District of North Dakota
  • U.S. District Court, Southern District of Texas


Environmental, Energy & Natural Resources, Environmental Litigation

Washington, D.C. Super Lawyers


Chambers USA, District of Columbia, Environment (Up and Coming)

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