Department profile
Thompson Coburn LLP

Environment

USA Guide 2026 : Missouri: St Louis & Surrounds


Thompson Coburn LLP

Rankings

About

Provided by Thompson Coburn LLP

We partner with some of the nation’s largest corporations and small private companies alike to navigate complex environmental issues. With deep experience across litigation and regulatory landscapes nationwide, our attorneys deliver cost-effective, results-driven solutions.

Our environmental attorneys have represented clients in complex environmental litigation in state and federal courts across the country. We also have represented clients before federal and state environmental regulatory agencies and have handled matters arising in nearly all of the EPA regions. Our experience includes suits involving cost recovery actions, enforcement defense, criminal defense, citizen suits, injury from environmental contamination, underground storage tanks, environmental insurance coverage, and chemical trespass and nuisance suits.

Our broad regulatory work includes permitting, compliance and transactional matters. Our team is well-versed in regulations including:

  • Resource Conservation and Recovery Act (RCRA)
  • Comprehensive Environmental Response, Compensation and Liability Act (CERCLA)
  • Clean Air Act
  • Clean Water Act
  • Toxic Substances Control Act
  • Hazardous Materials Transportation Act
  • Emergency Planning and Community Right to Know Act

Our work also includes litigation and compliance counsel related to PFAS. Our team is at the forefront of defending companies facing PFAS-related claims including property damage and those seeking medical monitoring fund implementation.

Industries (15)

  • Agriculture
  • Energy
  • Food
  • Health Care
  • Manufacturing
  • Maritime
  • Mining & Natural Resources
  • Public Transit
  • Railroad
  • Real Estate
  • Transportation
  • Life Sciences & Biotechnology
  • Pharmaceutical
  • Hazardous Materials Transport
  • Data Centers

Chambers Review

Provided by Chambers

Environment - Missouri: St Louis & Surrounds

Band 2

Band 2


What the Team is Known For

Thompson Coburn LLP has a St. Louis-based practice with a strong reputation built on its longstanding presence in the market. It has notable litigation expertise and experience in sizable class actions. The group regularly advises global corporations from the oil and gas, manufacturing and pharmaceutical industries. The team supports clients on an array of environmental matters, including challenges to new permits, cleanups and compliance mandates as well as government investigations.

Notable Practitioners

Provided by Chambers

  • Band 1Crystal Kennedy
    Band 1Crystal Kennedy

    Crystal Kennedy

    Crystal Kennedy is a transactional expert with several decades' experience. She is considered a go-to attorney for matters such as brownfield redevelopments, the sale and acquisition of industrial properties and cleanup programs.

  • Band 1Peter S Strassner
    Band 1Peter S Strassner

    Peter S Strassner

    Peter Strassner has an extensive environmental practice that sees him act for major transportation and manufacturing industry clients, among others. He handles administrative proceedings and courtroom litigation involving issues such as Superfunds, as well as advising on transactions.
  • Band 2Edward Cohen
    Band 2Edward Cohen

    Edward Cohen

    Edward Cohen has an extensive environmental litigation practice that sees him take on insurance coverage disputes, enforcement actions and class actions. He is particularly experienced in toxic mold mandates, while also advising on groundwater disputes.
  • Band 3Paul Sonderegger
    Band 3Paul Sonderegger

    Paul Sonderegger

    Paul Sonderegger is recognized for his experience in environmental disputes and regulatory matters, including groundwater and surface water issues.

    • Paul Sonderegger is a very bright lawyer.

      Environment respondentUSA
  • Band 3Ryan Kemper
    Band 3Ryan Kemper

    Ryan Kemper

    Ryan Kemper serves as cochair of Thompson Coburn's environmental law group. He has a broad practice which involves advising clients on regulatory compliance, as well as complex government investigations.

Ranked Individuals at Thompson Coburn LLP (5)

Missouri: St Louis & Surrounds

Members

Provided by Thompson Coburn LLP

Thompson Coburn LLP has rankings in the following guides

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