Simplify the following text for a Grade 12 native English-speaking person.
Original: Environmentalists hope that by the time reunification occurs , the former DMZ will be conserved as a wildlife refuge , with a well-developed set of objective and management plans vetted and in place .
Simplified: Environmentalists hope that the DMZ will be conserved as a wildlife refuge , with a well-developed set of objective and management plans vetted and in place .