Answer: decontaminating

AnswerCrossword Clue
DECONTAMINATINGActivity for the E.P.A.
DECONTAMINATINGCleansing, in a way
decontaminatingDECONTAMINATE, to rid of contamination
decontaminatingNeutralize or remove dangerous substances, radioactivity, or germs from (an area, object, or person)