What actions can be taken if a third inspection reveals a major violation of floodplain regulations?

The correct action in the scenario where a third inspection reveals a major violation of floodplain regulations is to withhold the certificate of occupancy. This measure is critical because it ensures that no structure that fails to meet floodplain management requirements can be occupied until it complies with all regulations. The certificate of occupancy signifies that the building meets all safety and legal requirements necessary for occupancy, and withholding it serves as a substantial enforcement tool to compel adherence to floodplain regulations.

When floodplain management regulations are violated, especially repeatedly, it is essential to take decisive action to protect public safety and environmental integrity. By withholding the certificate of occupancy, authorities can prevent potential hazards associated with non-compliance, such as increased flood risk and damage to property.

Other actions, such as issuing a warning or requiring structural modifications, may not provide immediate enforcement or ensure compliance, and while fines can be a component of enforcement for some violations, they are not as directly impactful as withholding the certificate of occupancy in terms of preventing unsafe conditions. Thus, withholding the certificate of occupancy is the most effective course of action in this situation.