(1) A proponent who has referred a proposed action to the NT EPA must give the NT EPA notice of any proposed significant variation to the proposed action.
(2) A proponent who has referred a strategic proposal to the NT EPA must give the NT EPA notice of any proposed significant variation to the proposal.
(3) A proponent is not required to give a notice of a proposed significant variation if the proponent refers the amended action or strategic proposal to the NT EPA for assessment under this Division.
(4) If an amended action or strategic proposal is referred to the NT EPA under this Division, the original referral is taken to be withdrawn to the extent that it is modified by the significant variation.