Watchdogs want US to address extreme plutonium contamination in Los Alamos’ Acid Canyon

ALBUQUERQUE, N.M. (AP) — Watchdogs are raising new concerns about legacy contamination in Los Alamos, the birthplace of the atomic bomb and home to a renewed effort to manufacture key components for nuclear weapons.

A Northern Arizona University professor emeritus who analyzed soil, water and vegetation samples taken along a popular hiking and biking trail in Acid Canyon said Thursday that there were more extreme concentrations of plutonium found there than at other publicly accessible sites he has researched in his decades-long career.

That includes land around the federal government’s former weapons plant at Rocky Flats in Colorado.

While outdoor enthusiasts might not be in immediate danger while traveling through the pine tree-lined canyon, Michael Ketterer — who specializes in tracking the chemical fingerprints of radioactive materials — said state and local officials should be warning people to avoid coming in contact with water in Acid Canyon.

“This is an unrestricted area. I’ve never seen anything quite like it in the United States,” the professor told reporters. “It’s just an extreme example of very high concentrations of plutonium in soils and sediments. Really, you know, it’s hiding in plain sight.”

Ketterer teamed up with the group Nuclear Watch New Mexico to gather the samples in July, a rainy period that often results in isolated downpours and stormwater runoff coursing through canyons and otherwise dry arroyos. Water was flowing through Acid Canyon when the samples were taken.

The work followed mapping done by the group earlier this year that was based on a Los Alamos National Laboratory database including plutonium samples from throughout the area.

Jay Coghlan, director of Nuclear Watch, said the detection