She advises clients on issues arising under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), the Resource Conservation and Recovery Act (RCRA), and the Clean Air Act (CAA). Mary also has experience with toxic tort litigation and advising on waste and product regulation.

Prior to joining Beveridge & Diamond, Mary served as a Law Clerk with the U.S. Department of Justice in the Environment & National Resources Division, Environmental Enforcement Section, and at the Environmental Law Institute and the Conservation Litigation Project.

During law school, Mary co-authored a chapter in the Routledge Handbook of International Environmental Law (Erika Techera et al. eds., 2d ed. 2021).