Deidre G. Duncan

Deidre Duncan Environmental Lawyer Hunton Andrews Kurth
Organization Profile
202 955 1919
Professional Biography

The leader of the firm’s environmental practice, Deidre is lauded in Chambers USA, 2016 as “extremely capable,” “very familiar with the regulations and agencies,” and excels at giving clients “good insight into getting an expeditious outcome.” Her practice focuses exclusively on environmental, energy and administrative law.

Deidre represents clients on permitting, compliance and litigation relating to the Clean Water Act (CWA), the Endangered Species Act (ESA), the National Environmental Policy Act (NEPA) and other environmental statutes. Deidre counsels clients on Corps infrastructure and civil works projects, including issues involving funding, acquisition and construction. She frequently counsels clients on administrative rulemaking and policy, providing regulatory clarifications when necessary, and drafting federal and state legislation on myriad intricate issues. She is also well known for negotiating and obtaining permits for complicated energy and development projects.

Her clients include development companies, oil and natural gas pipelines, electric utilities, agricultural interests, state and local agencies, and various trade associations.

Prior to entering private practice, Deidre served as assistant general counsel of the Army at the Pentagon, advising the secretary of the Army on environmental and land use issues involving the Corps of Engineers’ Civil Works and section 404 Regulatory program, as well as the Base Realignment and Closure (BRAC) program. Deidre has extensive experience with federal regulatory agencies, military departments and the US Department of Justice.

Deidre is a contributor to the firm’s environmental blog, The Nickel Report, and the firm’s pipeline industry blog,

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