; and (E) the working waterfronts preservation loan fund of the eligible coastal state will be credited with all payments of principal and interest on the loan; (2) to buy or refinance the debt obligation of a municipality or an intermunicipal or interstate agency within the eligible coastal state at an interest rate that is less than or equal to the market interest rate; (3) to guarantee, or purchase insurance for, a local obligation (all of the proceeds of which finance a project eligible for financial assistance under this section) if the guarantee or purchase would improve credit market access or reduce the interest rate applicable to the obligation; (4) as a source of revenue or security for the payment of principal and interest on a revenue or general obligation bond issued by the eligible coastal state if the proceeds of the sale of the bond will be deposited into the working waterfronts preservation loan fund of the eligible coastal state