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Ashleigh K. Myers

Partner
Austin & Houston

Partner, Austin & Houston

T: +1.512.580.9632
T: +1.713.276.7600
T: +1.512.580.9632
T: +1.713.276.7600

Areas of Focus

Ashleigh K. Myers maintains a multifaceted practice, helping companies achieve compliance objectives, resolve complex environmental risks and liabilities, and manage environmental projects.

Ashleigh advises domestic and global clients across industries on complex environmental regulatory and liability matters, helping navigate legal, financial and reputational risks in an evolving regulatory landscape. With a practice that spans multiple jurisdictions, Ashleigh regularly represents clients in litigated disputes and regulatory challenges at both state and federal levels, as well as in international contexts.

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Ashleigh takes a proactive and business-minded approach to environmental law, integrating regulatory and policy strategy, risk assessment, and contingency planning to deliver practical and effective solutions. Drawing on her deep experience environmental regulation, litigation and public policy, Ashleigh regularly negotiates compliance and entitlement conditions, advises on environmental liability management, and facilitates effective stakeholder and political engagement. Her practice spans key environmental and natural resources laws, with a particular focus on hazardous substance management and remediation, natural resource damages, carbon capture use and sequestration, water quality and water rights, endangered species and resource protection laws, and environmental impact assessment and mitigation.

As a founder and driving force behind Pillsbury’s Texas Cleantech and Climatetech Task Force, Ashleigh plays a crucial role advising companies on emerging regulatory and policy developments in clean energy, sustainability and climate-related legal frameworks. She collaborates across disciplines within the firm to provide innovative, value-driven solutions that support clients’ evolving sustainability strategies and climate disclosures.

Ashleigh is an award-winning authority in environmental law, frequently contributing to thought leadership on natural resource damages, climate change and energy-transition-related liabilities, corporate sustainability, natural resource and mineral development, and administrative law’s evolution.

Representative Experience

  • Advises global mining company on all aspects of managing its portfolio of U.S. environmental liabilities, including administrative and judicial action, as well as stakeholder and political engagement.
  • Counsels specialty chemicals company on various compliance matters and development of new business lines, including waste disposal and related regulatory engagement.
  • Advises foreign industry on U.S. governmental and stakeholder engagement in connection with planned operational expansions into the United States, particularly Texas.

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  • Advises on collaborative and non-collaborative natural resource damages assessments with federal, state and tribal natural resource trustees under federal regulations.
  • Advises a food industry company on conducting an ESG materiality assessment and measuring and managing greenhouse gas emissions to support voluntary sustainability commitments and disclosures.
  • Successfully negotiated dismissal of chemical company from groundwater basin adjudication in California.
  • Advises critical materials mining company on project development in Texas, including operational permitting and waste management.
  • Counsels data center clients on environmental and land use considerations in project site selection and operations.
  • Represented multiple private equity funds on the acquisition of water and wastewater utilities across the country.
  • Advised low-level radioactive waste disposal, storage and treatment facility on ongoing regulatory and compliance matters.
  • Advised industry trade association on comments to Texas Railroad Commission revisions to rules supporting application for Class VI primacy for carbon capture use and sequestration in Texas.
  • Secured Clean Water Action Section 404 permit and successfully navigated the associated Environmental Impact Statement for the first drinking water supply reservoir in Texas in over 30 years.

Professional Highlights

Honors & Awards

  • Recognized by The American Lawyer’s Litigation Daily as Litigator of the Week Runner-Up (February 2024)
  • Recognized by Best Lawyers: Ones to Watch (published by BL Rankings LLC) for Environmental Law (2023 – 2025)
  • Super Lawyers Rising Star 2022 – 2024

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  • Recipient of the 2020 Burton Award for Distinguished Legal Writing (Law 360)
  • Recipient of the 2020 KINDest Pro Bono Advocates (Kids in Need of Defense)
  • External Publications
    • “New York’s ‘Climate Superfund’ Bill Becomes Law, Part of a Trend” Real Estate Finance Journal (February 2025)
    • “And Then There Were Three: Louisiana Granted Primacy over Class VI Wells” Journal of Federal Agency Action (March 2024)
    • “Counterculture: The Uncertain Legal Bases for Stand-Alone Tribal/Cultural Damages Recoveries for Natural Resource Injuries Under CERCLA,” American Bar Association’s Section of Environment, Energy, and Resources (April 18, 2022). Co-author.
    • “Supreme Court Revisits and Revises ‘Auer Deference’ with Implications for Environmental Law,” in EM (2020). Co-author.
    • “Is It Closing Time for Reopener Provisions in CERCLA Natural Resource Damages Settlements?,” American Bar Association’s Section of Environment, Energy, and Resources (April 12, 2019). Co-author.
    • “How a New Ecological Augmentation Remedy Option Could Advance Superfund Site Closures at Mining-Impacted Sites” in the American Bar Association’s Section of Environment, Energy, and Resources (2019). Co-author.
    • “Water Reuse” in the Essentials of Texas Water Resources (2018 – 2024). Co-author.
    • “Water Quality” in the Thomson West Texas Practice Guide two-volume treatise on Texas Environmental Law (2015 – 2024). Co-author.
    • “Water Barons for the Water Barren? A Survey of Interbasin Water Transfer Laws in the Western States,” Texas Water Journal (Vol. 8, No.1, 2017). Co-author.
    • “Enlisting Renewable Energy: The Military’s Environmental Exceptionalism and a Renewable Energy Initiative in the Face of a National Security Threat,” Texas Environmental Law Journal, Vol. 45, No. 3, Aug. 2015. Author.
    • Progress Towards Better Assessment Processes: Emerging Data Gathering and Analysis Tools, Law Seminars International: The Tenth Advanced D.C. Conference on Litigating Natural Resource Damages, April 2025
    • Finance and Facilitation of Carbon Capture Use and Sequestration, Texas Symposium on Climate Change and Energy Transition, April 2025
    • Where Innovation Meets Regulation: Overcoming Obstacles and Unlocking Opportunities in the Evolving Energy Sector, SXSW, March 2025
    • Energy Policy and the Energy Transition, Austin Climate Hub, January 2025
    • Chevron Doctrine, No More: Implications of Loper Bright – Houston Bar Association – Energy Law Section, September 2024 and Houston Association of Professional Landmen, 26th Annual Offshore Seminar & Social, November 2024
    • “Emerging Leader Perspectives on Ethics and Professional Responsibility on Climate and Energy Transition,” Texas Symposium on Climate Change and Energy Transition, April 2024
    • “Case Law Update,” Texas Environmental Superconference, 2020
    • “Emergency Response: Managing Legal Requirements to Prevent and Respond to Major Accidents,” 32nd Annual Environmental, Health and Safety Seminar & Industry Trade Show, June 2019
    • “Case Law Update,” Texas Water Conservation Association Mid-Year Conference, June 2018
    • “Interbasin Transfers: Policy, Protectionism and Pipe Dreams,” CLE International, Oklahoma Water Law Conference, Mar. 2018
    • “Roundtable 1: Effective Negotiation to Achieve the Best Outcome,” National Association of Clean Water Agencies, National Water Enforcement Workshop, Nov. 2017
  • Associations
    • State Bar of Texas – Environmental and Natural Resources Section
    • Publications Committee Co-Chair, 2019 – present 
    • Attorney Editor-in-Chief, Texas Environmental Law Journal 
    • State Bar of Texas Administrative Law Section
    • Houston Bar Association – Environmental Law Section
    • Board Member, 2020 – 2022
      • American Bar Association – Environment, Energy & Resources Section
      • Women’s Energy Network 
      • Texas Young Lawyers Association
      • Texas Environmental Law Journal, State Bar of Texas’s Environment and Natural Resource Law Section’s Editor-in-chief, 2019 – present
  • Firm Committees
    • Sustainability
    • Women’s Impact Network

Education

  • J.D., The University of Texas School of Law, 2015

    B.A., Environmental Science, Baylor University, 2012
    International Studies,, summa cum laude

Admissions

  • Texas

Clerkships

  • Judicial Intern for Judge Xavier Rodriguez, U.S. District Judge for the Western District of Texas

    Judicial Intern for Judge Jeffrey Manske, U.S. Magistrate Judge for the Western District of Texas

Resources

The NRD Map

An up-to-date compendium of federal NRD sites and consent decrees

Ashleigh's Insights

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