RICHLAND, Wash. -

Perma-Fix Northwest has agreed to pay a $36,400 penalty for improperly handling mixed dangerous and radioactive waste.
   
The Richland, Washington, company handles various types of dangerous waste, including from the Hanford Nuclear Reservation.
   
The state Department of Ecology says the company will pay the penalty to settle violations for failing to properly designate, store and inspect the waste.
   
During an inspection, the Washington Department of Ecology found kitty litter-sized granules of waste on the floor and under a grate. Analysis confirmed the waste contained heavy metal cadmium, as well as radioactive substances including cobalt, cesium and uranium.
   
Ecology assessed a $52,000 penalty, but reduced that by one-third when Perma-Fix Northwest entered into an expedited settlement agreement.