"Commenced" means "commenced" as applied to construction of a major emitting facility, and as defined in section 169(2) of the Act, namely "that the owner or operator has obtained all necessary preconstruction approvals or permits required by Federal, State, or local air pollution emissions and air quality laws or regulations and either has (i) begun, or caused to begin, a continuous program of physical on-site construction of the facility or (ii) entered into binding agreements or contractual obligations, which cannot be canceled or modified without substantial loss to the owner or operator, to undertake a program of construction of the facility to be completed within a reasonable time."
N.H. Admin. Code § Env-A 102.48