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February 7, 2025

Holland & Hart Attorneys Recognized in the 2025 Lawdragon 500: Leading Environmental Lawyers – The Green 500

Holland & Hart is proud to announce that partners Jon Katchen, Tom Sansonetti, and Jim Spaanstra have been named to the fourth edition of the Lawdragon 500 Leading Environmental Lawyers – The Green 500 guide for Natural Resources & Environmental Law.

This Lawdragon 500 practice guide honors the nation’s leading environmental lawyers, who spend their lives helping address our world, whether on behalf of a corporation that delivers energy or develops homes, or an organization that fights for endangered species and to protect open land. Selections are based on independent journalistic research, submissions, and vetting with peers and experts in environmental law.

Katchen leverages extensive state government experience and sophisticated knowledge of Alaska's resource and economic development opportunities to help energy industry clients achieve their business goals. Katchen’s practice focuses on projects that raise complex issues, attracting scrutiny from both regulators and third-party groups. He guides clients past regulatory and environmental review obstacles to win agency approvals and has deep experience representing entities in a wide range of complex commercial disputes in state and federal courts, before judges and juries, appellate courts, and in private arbitrations.

A longtime litigator and project team leader, Sansonetti helps clients permit and develop projects with potential obstacles in mind. Long before a lawsuit can threaten a project, he counsels clients on how to develop effective plans of action that will meet government environmental permitting requirements and stand up to judicial scrutiny when those clients' projects are challenged in court. Sansonetti has served as an Assistant Attorney General for the Environment and Natural Resources Division in the Department of Justice and as the Solicitor and Associate Solicitor for Energy and Resources at the Department of the Interior.

Clients turn to Spaanstra for sound environmental counsel on complex permitting regimes and guidance to navigate the energy transition. He counsels energy and natural resource clients on permitting, compliance, and environmental enforcement matters. Clients benefit from his extensive experience permitting complex projects in the Mountain West involving complicated environmental issues. Spaanstra also provides sophisticated guidance to clients with solid and hazardous waste operations on a variety of matters including project siting, permitting, operation, and remediation of commercial waste management facilities.

To view the full list of honorees, please click here.

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