(c) Effect of initial decision. The initial decision of the Presiding Officer shall become a final order 45 days after its service upon the parties and without further proceedings unless:
- (1) A party moves to reopen the hearing;
- (2) A party appeals the initial decision to the Environmental Appeals Board;
- (3) A party moves to set aside a default order that constitutes an initial decision; or
- (4) The Environmental Appeals Board elects to review the initial decision on its own initiative.