
Vastly experienced across federal and state courts, administrative tribunals, and appellate forums, Gibson, Dunn & Crutcher LLP has a strong bench with experience across environmental, tort, and administrative litigation. The firm also benefits from collaboration with the firm’s wider practices including Appellate and ESG. The firm is led by Stacie Fletcher and Daniel Nelson from Washington DC. Fletcher is engaged in cases relating to federal and state environmental statutes, having acted as counsel on enforcement defense matters with the EPA and state agencies, whereas Nelson particularly focuses on environmental and mass tort litigation. The DC office is home to several key individuals, including Rachel Levick, who is noted for her work across federal and state litigation, agency enforcement actions, and administrative rulemaking proceedings; Michael Murphy, a name for CERCLA disputes; and Peter Seley, an expert on international environmental disputes and environmental investigations. Orange County-based Thomas Manakides receives a stream of work from varied industries extending to oil and gas, aerospace, and waste. The Los Angeles office is home to Abbey Hudson, a key contact for California environmental matters involving the relevant agencies such as the California Air Resources Board, and Patrick Dennis.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Lawyer & team quality
Client satisfaction: Billing & efficiency
Client satisfaction: Sector knowledge
Client satisfaction: NPS ®
Key clients
- Energy Transfer
- Daimler Truck North America
- eBay
- Daimler/Mercedes Benz
- Delta Air Lines
- Lane City Wind (RWE Clean Energy)
- General Dynamics Electric Boat
- Boeing
- Dole
- 3M
- Northrup Grumman
- U.S. Chamber of Commerce
Work highlights
Won a landmark $667 million North Dakota jury verdict for Energy Transfer after proving that Greenpeace orchestrated unlawful interference including inciting trespass, vandalism, public disruption, and defamatory statements to block the Dakota Access Pipeline.
Defending Delta Air Lines in a novel, high-stakes class action alleging widespread contamination from Sea-Tac flight operations, having removed the case to federal court and secured Ninth Circuit review of its motion to dismiss.
Secured complete dismissal of a first-of-its-kind DOJ and EPA enforcement action against eBay by developing innovative defenses that led the court to rule eBay was not a “seller” and that all claims were barred by Section 230, prompting the government to abandon its appeal and establishing a major precedent limiting EPA oversight of online marketplaces.
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.

Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Practice head
Stacie Fletcher; Daniel Nelson
Other key lawyers
Rachel Levick; Michael Murphy; Peter Seley; Thomas Manakides; Abbey Hudson; Patrick Dennis


