Thomas Delehanty

Senior Attorney

Rocky Mountain Office

tom-delehanty_800x600

Bar Admissions

CO

Pronouns

he / him

Thomas Delehanty

Senior Attorney Rocky Mountain Office

Perry Wheeler
Public Affairs and Communications Strategist
pwheeler@earthjustice.org

Tom Delehanty is a senior attorney in the Rocky Mountain Office.

His practice focuses on protecting public lands and wildlife from extractive industries and other harms across the West.

Before joining Earthjustice, Tom clerked in the Northern District of California and worked on national oil and gas policy issues.

Tom holds a BA in biology from Bowdoin College and a JD from the University of California, Berkeley.

Perry Wheeler
Public Affairs and Communications Strategist
pwheeler@earthjustice.org

Bar Admissions

CO

Pronouns

he / him

Quoted in the News

September 3, 2026

Outside Magazine

Patagonia Joins Environmental Groups in Suing Trump Over Bears Ears

“The fact that mining companies couldn’t even wait for the 60-day delay to pass speaks volumes about the risk of harm to the monuments’ irreplaceable cultural sites, unique wildlife, and scenic landscapes.”
July 19, 2026

Las Vegas Review-Journal

Trump renews monument wars

“This was a completely illegal abuse of power that President Trump just does not have.”
January 8, 2025

KGNU

Efforts to halt wolf reintroduction “directly antithetical” to what Colorado voters want

Earthjustice attorney Tom Delehanty joined KGNU’s Jackie Sedley to discuss the petition to halt wolf reintroduction in Colorado and what a delay of more wolves could mean for the state.
April 5, 2021

Colorado Newsline

Colorado weighs new bonding rules to address ‘orphaned’ oil and gas wells

“It’s beyond dispute that existing bonds do not cover full cleanup costs of existing wells. This means that the state’s taxpayers bear the substantial financial risk for nonperformance of well cleanup responsibilities.”

Latest Press Statements

Looking out from an ancient cliff dwelling to the night sky filled with stars.
September 17, 2026

Senator Lee Formally Begins Process to Fast-Track the Destruction of Bears Ears National Monument in Utah

Piling on to Trump’s proclamation, Lee could soon attempt to rip up the national monument’s land-use plan, which reflects a historic collaborative management process with five Tribal Nations
September 9, 2026

Colorado Department of Transportation Finalizes Misguided Plan to Widen I-270

Community-supported alternatives to widening are rejected
August 25, 2026

Recreation, Conservation Groups Unite Against Forest Service Travel Rule Rollback

Proposal would gut protections for fish and wildlife, create chaos for public lands users
A cultural site in Bears Ears National Monument.
August 20, 2026

Utah Senator Mike Lee Wants to Speed Up the Destruction of Bears Ears National Monument

Piling on top of Trump’s proclamation, Lee could soon fast-track an attempt to rip up the monument's land-use plan, which reflects a historic collaborative management process with five Tribal Nations
A loon spreads its wings in the Boundary Waters Canoe Area Wilderness.
August 17, 2026

Interior Faces Widespread Backlash Over Effort to Weaken Wilderness Protections Across Millions of Acres of Public Lands

Public comments urge the administration to abandon its review and preserve longstanding safeguards for America’s public lands
Bears Ears National Monument
August 14, 2026

Mining Claims Filed Immediately After Trump Decimates National Monuments in Utah

Attempts to file mining claims in Bear Ears and Grand Staircase-Escalante National Monuments show industry clamoring to exploit landscapes