Scientist says there’s legacy plutonium contamination in Los Alamos

‘Extreme plutonium contamination scenario’ identified in research from , soil, water and plant samples taken in Acid Canyon arroyos

BY , SOURCE NM | August 16, 2024 sourcenm.com

A map of the areas sampled by analytical chemist Michael Ketterer who released his findings of legacy plutonium waste in Los Alamos’ Acid Canyon. (Courtesy of Michael Ketterer)

Los Alamos, the Atomic City, is facing a legacy of its nickname.

High levels of plutonium present in samples taken in July from soil, plants and water in Los Alamos’ Acid Canyon may be the oldest contamination in the state, predating the 1945 Trinity Site atomic test, said Michael Ketterer, an analytical chemist and retired professor of chemistry from Northern Arizona University.

“There are some references to contamination being introduced into Acid Canyon starting in 1943,” he said Thursday. “It is very logical to me that this is some of the earliest produced material.”

The legacy plutonium contamination estimated to have lasted into the 1960s is still impacting the land, water and potentially human health, he said in a presentation hosted by Nuclear Watch NM.

“What I’ve found here in Acid Canyon, my friends, is I’d say pretty much the most extreme plutonium contamination scenario I’ve seen in an offsite, uncontrolled environmental setting,” Ketterer said, alluding to thousands of plutonium samples he’s analyzed in his 20-year career.

He said that contamination levels surpass samples he took at private properties around the former plutonium pit production site in Rocky Flats, Colorado.

One concern, which he said warrants immediate federal or state environment protection intervention, was the levels of plutonium contamination in water flows in Acid Canyon.

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