Kelley Drye

Attorneys & Professionals 

Catherine M. Wilmarth

Associate Email vCard
Washington, D.C.
Phone: (202) 342-8473
Fax: (202) 342-8451

Catherine Wilmarth is an associate in the firm’s Washington D.C. office. Her practice focuses on environmental, energy, and occupational safety and health issues. Ms. Wilmarth has represented corporate clients and national trade associations in multiple areas, including mobile source vehicles, parts, and equipment; the steel industry; and oil and gas production. She works frequently on matters under the Clean Air Act, Endangered Species Act, and EPA guidance and policies, among others.

Prior to joining Kelley Drye, Ms. Wilmarth served as a law fellow with the United States Environmental Protection Agency’s Air Enforcement Division, focusing on mobile source and vehicles and engines regulations, investigations, and enforcement cases under the Clean Air Act.

Representative Experience

Represented oil and gas interests in intervention in defense of the Fish and Wildlife Service’s decision to withdraw a proposed listing of the wolverine under the ESA.

Represented oil and gas interests in a multi-industry challenge to the listing of the lesser prairie-chicken under the ESA and intervention in support of the Section 4(d) special rule.

Drafted comments for the oil and gas industry on some of the Fish & Wildlife Service’s and National Marine Fisheries Service’s most significant rulemaking activity, including a positive 90-day finding on a petition to list the Gulf of Mexico Bryde’s whale, a draft policy on crediting voluntary conservation actions, and proposed listing of Graham’s and White River beardtongues in Colorado and Utah.

Represented aftermarket parts manufacturers before the Environmental Protection Agency.

Represented a laundering company in a dispute with the D.C. Water and Sewer Authority.

Represented an electric supplier before public utilities and service authorities in Maryland and Pennsylvania.

Advised trade association on changes to the Occupational Safety and Health Administration’s Permissible Exposure Level promulgation process under the Occupational Safety and Health Act.

Counseled oil and gas industry clients on occupational safety and health issues impacting the upstream sector; state legislative and regulatory activity regarding hydraulic fracturing; and Endangered Species act rulemaking, petitions, and litigation.

Counseled steel industry clients on environmental matters under the Clean Air Act, Clean Water Act, and Resource Conservation and Recovery Act.

Memberships & Associations

American Bar Association

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January 3, 2017

EPA Exploring Revisions to RCRA Waste Handling Regulations for Retailers

Kelley Drye Client Advisory


October 19, 2016

2016 Energy and Environmental Outlook Conference

Kelley Drye Seminar