Dietrich C. Hoefner

Dietrich C. Hoefner

Associate vCard
303.623.9222 fax
1200 Seventeenth Street
Suite 3000
Denver, CO 80202

Dietrich Hoefner is an attorney in the firm’s Government and Regulatory Affairs group. His practice focuses on federal and state administrative and regulatory law, and he represents clients in the energy, natural resources, gaming, and liquor sectors. His experience includes matters related to:

  • Regulated and cooperative utilities, including transmission planning, rate-regulation, and complaint cases before state public utilities commissions;
  • Environmental permitting, including matters under the Clean Water Act, Clean Air Act, National Environmental Policy Act, the Federal Land Policy and Management Act, the Safe Drinking Water Act (including Underground Injection Control matters), the Endangered Species Act, and various other state and federal environmental laws;
  • Public lands, including mining claims and mineral development;
  • Hazardous substances, including matters under the Comprehensive Environmental Response, Compensation, and Liability Act, the Resource Conservation and Recovery Act, the Emergency Planning and Community Right to Know Act (including Toxics Release Inventory matters);
  • Wetlands, including waters of the United States issues and Section 404 permitting;
  • Renewable energy project permitting and diligence;
  • State and federal liquor enforcement regulation, including new licenses, transfers of ownership, defense of state liquor code investigations, license renewals, and other areas relating to the general operation of liquor-licensed businesses; and
  • State gaming regulation.

Prior to joining the firm, Dietrich was an Assistant Attorney General Fellow at the Colorado Office of the Attorney General, where he worked on energy utility and consumer protection matters. He was also a research fellow at the Silicon Flatirons Center for Law, Technology, and Entrepreneurship, where he focused on energy regulation.

Memberships & Affiliations

  • Colorado Bar Association Environmental Law Section, Council Member, Legislative Policy Committee Liaison
  • Planning Commission, City of Louisville, Colorado, Commissioner
  • Colorado Photographic Arts Center, Board Member
  • Electric Cooperative Bar Association, Member
  • Energy Bar Association, Member
  • Colorado Bar Association, Member
  • American Bar Association, Member

Related Events

Past Events
Hop Culture Meet and Greet
Lewis Roca Rothgerber Christie's Liquor Law Group is partnering with client, Hop Culture


  • Author, "Federal Water Quality - WOTUS Rule Updates," Rocky Mountain Mineral Law Foundation Water Law Newsletter, Vol. 52, No. 2, June 2019
  • Author, "Update on CWA Regulation of Discharges to Groundwater," Rocky Mountain Mineral Law Foundation Water Law Newsletter, Vol. 52, No.1, January 2019
  • Author, "Regulation of Discharges to Groundwater Under the CWA," Rocky Mountain Mineral Law Foundation Water Law Newsletter, Vol. 51, No.2, October 2018
  • Author, "Ninth Circuit Holds That Some Discharges into Groundwater Are Regulated by the Clean Water Act," Rocky Mountain Mineral Law Foundation, Vol. 51, No. 1, March 2018
  • Author, "Army Corps of Engineers Jurisdictional Determination Reversed on Remand of Hawkes," Rocky Mountain Mineral Law Foundation Water Law Newsletter, Vol. 50, No. 1, March 2017
  • Author, "Supreme Court Holds That Clean Water Act Jurisdictional Determinations Are Immediately Reviewable," Rocky Mountain Mineral Law Foundation, Vol. 49, No. 3, November 2016
  • Author, "EPA Final Rule Revisiting Effluent Limitations Guidelines for Steam Electric Power Plants; Court Challenges Consolidated," Rocky Mountain Mineral Law Foundation Vol. 49, No. 1, March 2016
  • Co-Author, "Common Environmental Due Diligence Mistakes to Avoid," Colorado Real Estate Journal, February 2016
  • Co-Author, "Ninth Circuit Further Limits the Clean Water Act’s ‘Permit Shield’ Defense," Rocky Mountain Mineral Law Foundation, Vol. 48, No. 1, March 2015
  • Author, "City of Denver to Take Up Construction Defect Litigation Reform," Colorado Real Estate Journal, November 2015
  • Author, "Proposed Expansion of OSMRE'S Regulatory Authority Under SMCRA," Rocky Mountain Mineral Law Foundation, Vol. 48, No. 3, November 2015
  • Author, "Final Rule on Waters of the United States," Rocky Mountain Mineral Law Foundation, Vol. 48, No. 2, June 2015
  • Co-Author, "New U.S. EPA Rule Changes The Scope of Federal Clean Water Act Jurisdiction," June 2015



  • United States Attorney’s Office, District of Colorado
  • Colorado Senator Mike Johnston - Legislative fellow

Other Info



J.D., University of Colorado Law School, 2013
A.B., Lafayette College, 2010

Bar Admissions

Colorado, 2013

Court Admissions

U.S. Court of Appeals for the Tenth Circuit