A comprehensive conservation and management plan is eligible for state funding to assist in implementation of the plan if:
(1) the estuary involved has been designated jointly by the governor and the United States Environmental Protection Agency as an estuary of national significance in accordance with Section 320 of the Federal Water Pollution Control Act (33 U.S.C. § 1330), as amended; and
(2) the comprehensive conservation and management plan for the estuary involved, together with the accompanying implementation plan, has been completed and approved.