The in-state natural gas pipeline fund is established in the corporation and consists of money appropriated to it. The corporation shall determine fund management and may contract with the Department of Revenue for fund management. Unless otherwise provided by law, money appropriated to the fund lapses into the general fund on the day this section is repealed. Interest and other income received on money in the fund shall be separately accounted for and may be appropriated to the fund. The corporation may use money appropriated to the fund without further appropriation for the cost of managing the fund and for the planning, financing, development, acquisition, maintenance, construction, and operation of the in-state natural gas pipeline described in AS 31.25.005(4) and for the purposes in AS 31.25.005(4), (6), and (7).