The Agency, not later than 45 days after the receipt of the source water protection plan, will either approve or disapprove the plan. If the Agency takes no action within the 45 days, the community water supply may deem the plan approved. A community water supply may waive the requirement that the Agency take an action within the 45 days by so advising the Agency in writing.
Ill. Admin. Code tit. 35, § 604.335