Any industrial users of a sewer facility constructed with Environmental Protection Agency grant funds awarded after March 1, 1973, shall repay that portion of the grant amount allocatable to the treatment of its wastes. The method of repayment and procedures for handling the repayment shall be in accordance with Sections 35.905-6, 35.905-7, 35.905-8, 35.905-12, 35.928 and 35.935-13 of the Environmental Protection Agency Rules and Regulations for Water Pollution Control Construction Grants for waste treatment works as published in Volume 39, Number 29, of the Federal Register dated February 11, 1974.