Notwithstanding the previous paragraph, if the State develops a Coastal Wetlands Conservation Plan pursuant to this chapter, and such conservation plan is approved pursuant to section
of this title, amounts made available in accordance with section
of this title for any coastal wetlands restoration project under this section shall be 85 percent of the cost of the project. In the event that the Secretary, the Director, and the Administrator jointly determine that the State is not taking reasonable steps to implement and administer a conservation plan developed and approved pursuant to this chapter, amounts made available in accordance with section
of this title for any coastal wetlands restoration project shall revert to 75 percent of the cost of the project: Provided, however, that such reversion to the lower cost share level shall not occur until the Governor has been provided notice of, and opportunity for hearing on, any such determination by the Secretary, the Director, and Administrator, and the State has been given ninety days from such notice or hearing to take corrective action.