The following words and phrases when used in this article shall have the meanings given to them in this section unless the context clearly indicates otherwise:
"Approval."
"Development." Any of the following:
"Extension period." The period beginning after December 31, 2008, and ending before July 2, 2016.
"Government agency." The Commonwealth, a political subdivision or an agency, department, authority, commission or board of the Commonwealth or a political subdivision. The term includes regional commissions, boards or instrumentalities with the authority to issue approvals.
72 P.S. § 1602-I