Mark has over two decades of experience working in-house at large chemical companies.
His focus is product regulation at the federal, state, and international levels across a wide range of programs, and occupational safety and health.
He leads the firm’s Chemicals group. His experience under the Toxic Substances Control Act (TSCA) includes enforcement actions, counseling, rulemaking, advocacy, and legislative actions. Since the enactment of TSCA amendments in 2016, he has been heavily involved in advocacy, compliance activity, and litigation arising from EPA's implementation of these amendments. He also works with foreign counterparts to TSCA, including REACH and CEPA.
He is also a leader of the firm’s Occupational Safety and Health practice. He has extensive experience with OSHA and state OSHA inspections, enforcement litigation, compliance counseling, advocacy, and rulemaking. He has counseled clients on the EPA risk management program requirements under Section 112(r) of the Clean Air Act and state worker protection programs, and on inspections by the Chemical Safety and Health Investigation Board.
He has extensive experience with the Federal Insecticide, Fungicide, and Rodenticide Act, particularly with respect to regulation of antimicrobials, and with the Biocidal Products Directive in Europe.
He heads the firm’s FDA practice, having worked on FDA regulation of food and food additives, dietary supplements, drugs, medical devices, and cosmetics, and European counterparts. He is knowledgeable about human testing requirements, having served as the Chair of an institutional review board for several years.
He has counseled clients on the regulation of consumer products by the Consumer Product Safety Commission and the Federal Trade Commission. He has reviewed hundreds of green marketing claims and counseled on federal, state, and international regulation of such claims.
He has worked on green chemistry issues at the federal and state levels, as well as a variety of voluntary programs that affect products. He has helped clients with the Emergency Planning and Community Right-to-Know Act, the Controlled Substances Act, the Chemical Weapons Convention, and other chemicals-related requirements.
He has advised clients and written and lectured on the regulation of the products of nanotechnology by FDA and by EPA under FIFRA and TSCA, and on related product stewardship issues.
- Amherst College (B.A., magna cum laude, 1974)
- Phi Beta Kappa
- University of Virginia (J.D., 1978)
- Order of the Coif
- District of Columbia
- U.S. Supreme Court
- U.S. Court of Appeals - D.C. Circuit
- U.S. Court of Appeals – Fifth Circuit
- U.S. District Court – District of Columbia
- American Bar Association; Section on Environment, Energy, and Resources; Committee on Pesticides, Chemical Regulation, and Right-to-Know; Vice Chair and former Chair
Honors & Awards
- The Best Lawyers in America©, a Best Lawyers® publication, recognition in Environmental Law (2013-2024)
- Super Lawyers, part of Thomson Reuters, Washington, DC, Super Lawyer (2014-2015; 2018-2020)