If credit or reimbursement is due to the fee payer pursuant to this section 15.16.050, the city shall enter into a written agreement with the fee payer, negotiated in good faith, prior to the contribution, dedication or funding of the system improvements giving rise to the credit. The agreement shall provide for the amount of credit or the amount, time and form of reimbursement, and shall have a term not exceeding ten (10) years. (Ord. 985 § 1, 2007)