J. Derek Hardberger


Paralegal: Annette Strother
Bio Menu
  • Overview
  • Honors & Involvement
Bio overview

Derek Hardberger is an environmental lawyer with 23 years of experience practicing before agencies in numerous states and with the U.S. Environmental Protection Agency. His practice encompasses nearly every aspect of environmental law ranging from regulatory guidance for existing facilities and guidance for construction of new facilities to environmental litigation. Over the course of his practice, he has developed a business-oriented approach and works closely with not only the environmental leadership of his clients, but with the business leaders as well.

Derek has worked with a variety of facilities, including chemical manufacturers, refineries, metal equipment manufacturers, food additive manufacturers, electric power plants, aircraft maintenance facilities, waste management companies including landfills, glass manufacturers, oil and gas exploration companies, midstream facilities, and mining companies.

While working with these companies, he has provided advice on a variety of issues including compliance with the Clean Air Act (CAA), Clean Water Act (CWA), Emergency Planning and Community Right to Know Act (EPCRA), Resource Conservation and Recovery Act (RCRA) hazardous waste and solid waste regulation, groundwater and surface water use permitting, Toxic Substances Control Act (TSCA), Chemical Security Act, Occupational Safety and Health Act (OSHA) and Comprehensive Environmental Compensation and Liability Act (Superfund) and their state counterparts. He has extensive experience with injection well permitting and compliance along with associated issues such as induced seismicity claims.

Derek’s achievements have earned him inclusion in The Best Lawyers in America (energy regulatory law).

Derek holds an LL.M. with an emphasis in environmental law from the George Washington University National Law Center. While pursuing his master’s degree, he concentrated his thesis on Superfund allocation amongst small potentially responsible parties.

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Experience, Honors, & Awards

Honors and Awards

  • Selected by peers for inclusion in The Best Lawyers in America (energy regulatory law)

Professional Organizations and Memberships

  • Oklahoma County Bar Association
  • Oklahoma Bar Association


ATPs display in this column

At The Podium

Environmental Law Update

Mineral Lawyers Society of Oklahoma City
Oklahoma City, Oklahoma | February 15, 2018

The Moving Landscape in Environmental Law: What it means to business

2017 Corporate Counsel Seminar
Oklahoma City, OK | December 7, 2017

‘Coal Ash: The New Reality’

Environmental Federation of Oklahoma’s 19th Annual Meeting
October 1, 2010
Attorney Articles


  • Oklahoma, 1994


  • LL.M. (Environmental Law), George Washington University, 1997
  • J.D., University of Tulsa, 1994
  • B.B.A. (Finance), University of Oklahoma, 1991


2018 Firm Announcement

January 3, 2018