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Mortandad Canyon chromium plume may be wider than expected

Chromium levels five times the acceptable state limit was detected in an injection well located in Mortandad Canyon at a chromium spill on Los Alamos National Laboratory property.

The spill, located in the western part of the Pajarito Plateau in the eastern section of LANL property, has been monitored since its discovery in 2004. The injection well was supposed to mark the spill’s outermost boundary.

Last year, David Rhodes, director for the office of quality and regulatory compliance at the Environmental Management Office in Los Alamos, described the plume as being circular, and about a half-mile in diameter, according to a 2016 Los Alamos Monitor article.

Members of Nuclear Watch New Mexico discovered the chromium level numbers in a search of a public database maintained by LANL.

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