The department and the department of natural resources and conservation may adopt rules to implement the provisions of this part, including rules: (1) prescribing the form and content of applications for loans and refinancing agreements; (2) governing the application of the criteria for awarding loans; (3) establishing additional terms and conditions for the making of loans and the security instruments and other necessary agreements; and (4) establishing ceilings on the amount of individual loans to be made to municipalities and private persons, if considered appropriate and necessary for the successful administration of the program.