PEER Field Office – Rocky Mountain

Since 1997

Rocky Mountain Peer covers the states of the Rocky Mountain region. These states contain millions of acres of federally protected lands. These unique areas, which include Yellowstone National Park, Arches National Monument, the Maroon Bells-Snowmass Wilderness Area, Grand Teton National Park, and Rocky Mountain National Park, bring countless visitors to the breathtaking landscapes that define the Rocky Mountains. Major environmental issues facing the region include habitat protection, roadless forests and wilderness areas, urban and suburban sprawl, and water issues.

Chandra Rosenthal, a Colorado native, heads up the office as Rocky Mountain PEER Counsel. Chandra, formerly staff attorney with Defenders of Wildlife specializing in endangered species and public lands issues, has also worked for the U.S. Department of Justice and, under a legal fellowship, worked on a Superfund site with the Department of Energy.

“I view my job as helping the region’s public service professionals do their jobs of protecting the diverse and abundant natural resources of the Rockies,” states Rosenthal.


Chandra Rosenthal
Denver, CO
Phone: 202-265-7337 x501

Twitter: @RockyMountPEER

Snow Covered Rocky Mountains Banner for PFAS in Colorado Fact Sheet


Clear the air about Helmig

"Last month, the University of Colorado Boulder released a scathing audit about the events that led to the firing of Detlev Helmig, formerly an associate research professor at CU’s Institute of Arctic and Alpine Research. According to the audit, which was released...

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Helmig’s work has saved lives

"I read with interest Katie Langford’s June 19 story regarding Dr. Detlev Helmig. I was drawn to this since I have not only used Dr. Helmig’s research in my work, but also presented with him to audiences along the Front Range. I do not want to discuss guilt or...

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Colorado should do more to control PFAS contamination

"There is growing scientific evidence that the COVID-19 virus disproportionately impacts those with compromised immune systems. Unfortunately, segments of the Colorado public may be more at risk because of long standing contamination from per- and poly-fluoroalkyl...

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PFAS in Colorado: Fact Sheet

PFAS are a man-made chemical that are used in the manufacture of consumer goods including cookware, flame-retardants, waterproofing, furniture and take out containers.

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