Seaton Thedinger

Seaton Thedinger

Counsel, Denver

Email seaton.thedinger@​

Phone +1 303 454 2551

Fax +1 303 899 7333

Practice groupRegulatory

Seaton Thedinger represents clients on a wide variety of environmental, health, and safety matters, focusing on corporate and real estate transactions, finance, compliance advice, enforcement actions, and cleanups. He brings his legal experience to bear on his client's most significant environmental legal challenges, in industries as diverse as chemical and manufacturing to food and beverage.

Seaton appreciates the business needs of his clients and applies that understanding to his practice assessing and managing environmental liability in corporate transactions. These transactions frequently involve Superfund sites, other significantly contaminated sites, and companies with millions of dollars in potential or outstanding environmental, health, and safety liabilities.

Seaton regularly represents clients in enforcement, compliance, and permitting matters involving air, water, waste, and chemical safety and reporting rules. He also represents clients in matters involving the Occupational Safety & Health Administration (OSHA) and similar state programs. Seaton frequently coordinates with environmental consultants and in-house technical personnel, manages environmental, health, and safety audits, advises clients on voluntary self-disclosures, and negotiates penalties with federal and state regulators.

While attending the University of Colorado Law School, Seaton was managing editor of the Colorado Journal of International and Environmental Law and Policy and served as President of the Environmental Law Society.

Education and admissions


J.D., University of Colorado School of Law, 2006

B.S., Vanderbilt University, cum laude, 2002

Bar admissions and qualifications


Representative experience

Obtained a multimillion dollar settlement from a former manufacturing facility owner for costs to address wastewater violations.

Counseling an international food corporation on preparing and filing regulatory approvals for new microorganisms under TSCA.

Representing an oil and gas waste services company on the voluntary remediation of a solid waste disposal site in Colorado.

Advising an international engineering services company on its assessment and financial reporting obligations of significant environmental liabilities.

Representing private equity firms on acquisitions of businesses with extensive environmental liabilities, including refineries and manufacturers.

Counseling an international food industry client on OSHA hazard communication requirements.

Obtained a multi-million dollar settlement from a former manufacturing facility owner for costs to address wastewater violations.

Latest thinking and events

Published Works

How Ski Areas Can (and Should) Take Advantage of Environmental Self-Disclosure Laws and Policies NSAA Journal

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