Perma-Fix Northwest in Richland has agreed to pay a $187,620 fine and improve waste handling practices, according to the Environmental Protection Agency.
EPA’s National Enforcement Investigation Center conducted an inspection of Perma-Fix in 2010, that included a look at the plant’s radioactive and hazardous waste storage areas.
EPA maintains that mixed radioactive and hazardous chemical waste was being stored in an area not covered by a permit for three years, when the limit is three months.
Perma-Fix has improved waste handling operations at the facility since 2010, according to the EPA.
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Earlier this month the Department of Energy also agreed to pay a $136,000 fine after the EPA National Enforcement Investigations Center conducted an inspection and questioned whether several Hanford waste storage units were covered by permits.