Timothy K. Webster

Webster, Timothy K.


Washington, D.C. +1 202 736 8138

1501 K Street, N.W.
Washington, D.C. 20005
+1 202 736 8138

twebster@sidley.com twebster@sidley.com

Admissions & Certifications

Timothy K. Webster


TIMOTHY K. WEBSTER joined the firm’s Washington, D.C. office from the U.S. Department of Justice where he served as a Trial Attorney in the Environmental Enforcement Section. His practice includes both civil and criminal environmental enforcement defense, as well as challenges to government actions, internal investigations, and regulatory advocacy and compliance counseling. Mr. Webster has handled a wide variety of civil and criminal cases under statutes such as the Clean Air Act (including stationary sources, mobile sources, greenhouse gases, and stratospheric ozone), the Clean Water Act (including oil spills and permit violations), CERCLA (including cost recovery, contribution, and release reporting), the Federal Insecticide, Fungicide, and Rodenticide Act (misapplication and misbranding), as well as “toxic tort” litigation.

On June 16, 2015, Mr. Webster was sworn in as the 44th President of the District of Columbia Bar, as position he served in until June 15, 2016, all while remaining a partner at the firm. This “unified” bar is the mandatory licensing authority for all District of Columbia lawyers and has over 100,000 members and about 150 employees. He also led the D.C. Bar Pro Bono Center, an affiliated 501(c)(3) entity that recruits, trains, and mobilizes volunteer attorneys to take pro bono cases serving individuals living in poverty. Mr. Webster will remain on the Board of Governors as Immediate Past President through mid-2017.

In addition, Mr. Webster served as outside pro bono General Counsel of the D.C. Bar from 2004–2010, advising the Bar on business matters and defending the Bar and its employees in litigation.

While at the University of Virginia School of Law, Mr. Webster served as editor-in-chief of the Virginia Environmental Law Journal. After graduating, he clerked for the Honorable John P. Wiese in the U.S. Court of Federal Claims in Washington, D.C. At Justice, Mr. Webster litigated complex civil enforcement cases brought under a variety of federal environmental statutes, including CERCLA, the Clean Air Act, the Clean Water Act, and the Oil Pollution Act, among others.

Mr. Webster is listed in Who’s Who Legal, Chambers USA, The Best Lawyers in America, and Washingtonian magazine’s 2013 list of “Washington’s Best Lawyers.”


  • Defense of a Clean Air Act citizen suit seeking to enjoin alleged construction of a power plant prior to the issuance of a Prevention of Significant Deterioration permit, resulting in a ruling for the defense after trial on a motion for a preliminary injunction;
  • Defense of a criminal Clean Air Act matter involving several industrial accidents, resulting in a plea agreement;
  • Defense of oil spill litigation resulting from a rupture of a mainline crude oil pipeline, resulting in a favorable settlement;
  • Defense of a Clean Air Act permit challenge by advocacy groups in which the permit was upheld after a two week trial;
  • Defense of a Clean Air Act citizen suit by two environmental advocacy groups alleging a variety of permit and regulatory violations at a coal-fired power plant, resulting in a favorable settlement;
  • Defense of a NEPA suit seeking to enjoin construction of a golf course, including the successful defense of a motion for a temporary restraining at an evidentiary hearing;
  • A successful challenge to an EPA rulemaking under the Clean Air Act Title VI stratospheric ozone program before the D.C. Circuit;
  • A successful challenge to an EPA guidance document on the grounds that document had not been promulgated pursuant to notice and comment rulemaking before the D.C. Circuit; and
  • Defense of the District of Columbia Bar and individual employees in several suits, on abstention and other grounds, resulting in favorable decisions from the district court and the D.C. Circuit.
  • Timothy K. Webster, “New Justice Department Policy Calls For Prosecuting Individuals, Not Just Corporations, In Civil And Criminal Matters” American Bar Association, Environmental Enforcement and Crimes Committee Newsletter, January 2016
  • Timothy K. Webster, “In Drafting Our Laws, A Call for Short, Simple,” Washington Lawyer, January 2016
  • Timothy K. Webster, “Feting the Great Charter,” Washington Lawyer, December 2015
  • Timothy K. Webster, “Building a Fiscally Sound Future for the Bar,” Washington Lawyer, November 2015
  • Timothy K. Webster, “Teaching Leadership,” Washington Lawyer, October 2015
  • Timothy K. Webster, “It’s the Clients, Stupid,” Washington Lawyer, September 2015
  • Timothy K. Webster, “Carving Our Path Into the Future,” Washington Lawyer, July/August 2015
  • Timothy K. Webster, “Clean Air Act Enforcement Takes a Hit on Statute of Limitations Grounds,” American Bar Association, Environmental Enforcement and Crimes Committee Newsletter, August 2013
  • Timothy K. Webster & Justin W. Curtis, “Collateral Consequences Redux: Congress Raises the Bar on Companies Convicted of Felonies,” American Bar Association, Environmental Enforcement and Crimes Committee Newsletter, August 2013
  • Timothy K. Webster & James R. Wedeking, “Trends in Environmental Enforcement Against Animal Agriculture,” American Bar Association, Section of Environment, Energy, and Resources, 13th Section Fall Meeting, 2005
  • David B. Weinstein & Timothy K. Webster, “Federal Environmental Enforcement: Criminal, Civil, & Administrative – Broad Powers, Significant Consequences,” Florida Chamber Environmental Summer School, 2004
  • Timothy K. Webster, “The Future of the Chemical and Biological Weapons Conventions,” 16 Nat. Resources & Env’t 187, 2002
News & Achievements