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Stacey Halliday brings more than a decade of experience in environmental law, regulatory compliance, and enforcement defense. A former senior member of the Environmental Protection Agency’s oversight response team, she draws on a deep well of government and private-sector insight to advise clients navigating complex environmental challenges.

Environmental Compliance, Enforcement & Transactions

Stacey’s regulatory practice spans a wide range of environmental statutes, including the Resource Conservation and Recovery Act (RCRA), the Safe Drinking Water Act (SDWA), and the Toxic Substances Control Act (TSCA). She has extensive experience counseling clients on waste and recycling compliance, including U.S. federal and state disposal restrictions for electronics, batteries, plastics, PFAS, and related materials. She is also a trusted advisor on emerging product stewardship compliance considerations, regularly guiding clients through issues related to extended producer responsibility, digital right-to-repair, product labeling, and material bans.

In her enforcement and crisis management work, she has represented clients in civil and criminal environmental matters, including negotiating settlements and consent decrees. She advises organizations facing government investigations, court-ordered monitorships, and congressional oversight inquiries.

She also counsels clients on environmental aspects of business transactions, including due diligence, contract drafting, and the negotiation of environmental provisions in sale and lease agreements.

ESG & Environmental Justice

In addition to Stacey’s environmental regulatory practice, she advises clients on ESG and environmental justice matters, with expertise involving voluntary and mandatory disclosures, sustainability ratings, environmental marketing claims and litigation (such as recycled content and recyclability), and environmental justice strategy and state compliance. Consistent with this expertise, she serves as a co-chair of the firm’s ESG Working Group.

Government Experience & Congressional Oversight

As a senior member of the Environmental Protection Agency’s (EPA) oversight response team, Stacey provided legal and strategic guidance on congressional investigation and hearing preparation. She played a key role in the EPA’s incident response and crisis management of the Flint drinking water crisis, the Gold King Mine spill, and the legal defense of the Clean Power Plan and Clean Water Rule. While serving as Special Counsel in the EPA’s Office of General Counsel, she coordinated the agency’s response to the U.S. Commission on Civil Rights investigation of the EPA’s Title VI program.

Experience

  • Global electronics manufacturer in ongoing compliance counseling for circularity, recycling, and repair issues, including waste designations for used goods under RCRA and international treaties. 
  • Global chemical company in ongoing compliance counseling for facility-level state and federal environmental requirements, enforcement defense, and counseling environmental claims related to plastic recycling. 
  • Food company in an internal compliance investigation involving state and federal permit compliance in anticipation of potential enforcement.
  • Telecommunications company in advising on RCRA and SDWA Lead and Copper Rule issues in anticipation of potential federal and state environmental enforcement.
  • Global chemical company in ongoing advising on environmental due diligence and related analyses for real estate and transactional matters, including emerging issues related to PFAS liability.
  • Drinking water component manufacturer in advising on compliance obligations under EPA’s Lead-Free Rule and corresponding labeling requirements. 
  • National and local residential renovators in a criminal and civil federal enforcement matters subject to TSCA’s Renovation, Repair, and Painting Rule and related lead paint requirements. 
  • Independent Corporate Compliance Monitor, pursuant to U.S. DOJ plea agreement for global automobile manufacturer, serving as team lead overseeing issues related to environmental management systems and auditing.
  • Appliance manufacturer in advising on Right to Repair state laws, required labeling, and national compliance strategy.
  • Global airline in advising on environmental marketing materials and voluntary sustainability reporting on minimizing global litigation and enforcement risk in accordance with domestic reporting requirements and global standards. 
  • Consumer product manufacturer on multi-jurisdictional ESG compliance review and ongoing impact assessment for risk mitigation.
  • Global clean energy technology company in advising on corporate social responsibility, including developing annual reporting content and broader strategic approaches to sustainability and environmental justice.
  • Leading national energy utility in designing and implementing programs to incorporate environmental justice considerations in project decision-making.
  • A large municipality in a federal investigation of compliance obligations under Title VI of the Civil Rights Act by the EPA and the U.S. Department of Transportation. 
  • Several national trade associations in advising on evolving state and federal compliance obligations and best practices for environmental justice.

Recognition

Chambers USA
"Up and Coming" Environment — Washington, D.C. (2024-2025)
Lawdragon 500
Leading Environmental Lawyers – The Green 500 (Environmental Justice, ESG) (2024-2025)
Best Lawyers
Environmental Law — Washington, D.C. (2025)
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Credentials

Education

  • J.D., Howard University School of Law, 2011
  • A.B., Political Science and French, Harvard University, 2005

Admissions

  • District of Columbia
  • New York

Government & Military Service

  • Special Counsel, Immediate Office, Office of General Counsel, U.S. Environmental Protection Agency (2015-2017)
  • Law Clerk, Fraud and Public Corruption, U.S. Attorney’s Office, Washington, D.C. (2010-2011)
  • Law Clerk, Federal Major Crimes, U.S. Attorney’s Office, Washington, D.C. (2010)

Clerkships

  • District of Columbia Court of Appeals, The Honorable Anna Blackburne-Rigby

Activities

  • Member of Board and Leadership Council, Environmental Law Institute (2020-present)
  • Board Member, D.C. Safe (2018-2021)
  • Vice Chair, Board, National Environmental Justice Conference (2021-present)
  • Member, Environmental Justice Advisory Board, Multistate, Environmental Response Trust, Greenfield Environmental Trust Group (2021-present)
  • Member of Council, Section on Environment, Energy and Resources, American Bar Association (2022-present)
  • Special Advisor, Environmental Justice Task Force, American Bar Association (2022-present)
  • Vice Chair for Environmental Justice/Just Transition, Climate Change Committee, American Bar Association (2021-present)
  • Chair, Membership Diversity Enhancement Program, American Bar Association (2019-2022)

Languages

  • French
Overview