1. For the purpose of protecting the air, water and land resources of the state, there is hereby created in the state treasury a fund to be known as the “Natural Resources Protection Fund”. All funds received from air pollution permit fees, gifts, bequests, donations, or any other moneys so designated shall be paid to the director of the department of natural resources, transmitted to the director of revenue and deposited in the state treasury to the credit of an appropriate subaccount of the natural resources protection fund and shall be used for the purposes specified by law. The air pollution permit fee revenues shall be deposited in an appropriate subaccount of the natural resources protection fund and, subject to appropriation by the general assembly, shall be used by the department to carry out the general administration of section 643.075. The water pollution permit fee revenues generated through sections 644.052, 644.053, 644.054 and 644.061 shall be paid to the director of the department of natural resources, transmitted to the director of the department of revenue and deposited to the credit of the water pollution permit fee subaccount of the natural resources protection fund and, subject to appropriation by the general assembly, shall be used by the department to carry out the administration of sections 644.006 to 644.141.

2. Effective July 1, 1991, the provisions of section 33.080 to the contrary notwithstanding, any unexpended balance in the subaccounts of the natural resources protection fund that exceeds the preceding biennium’s collections shall revert to the general revenue fund of the state at the end of each biennium. All interest earned on the natural resources protection funds shall accrue to appropriate subaccounts.