Within one year of initial participation as a certified tier I or tier II municipality, a participating municipality may develop a comprehensive economic development plan designed to increase the tax base of the municipality to a level that will allow the municipality to provide an adequate level of municipal services. The plan shall be approved by the legislative authority of the municipality. If at any time after the comprehensive economic development plan has been completed and the municipality fails to show substantial progress in meeting the goals of the plan, the state may suspend further assistance to the municipality. The secretary, in consultation with the Commissioner of Economic and Community Development, shall evaluate the comprehensive economic development plan annually. The secretary may provide qualified staff and financial assistance to the qualifying municipality for purposes of developing a comprehensive economic development plan.