(1) Impact fee receipts shall be earmarked specifically and retained in special interest-bearing accounts. Separate accounts shall be established for each type of public facility for which impact fees are collected. All interest shall be retained in the account and expended for the purpose or purposes for which the impact fees were imposed. Annually, each county, city, or town imposing impact fees shall provide a report on each impact fee account showing the source and amount of all moneys collected, earned, or received and system improvements that were financed in whole or in part by impact fees.
(2) Impact fees for system improvements shall be expended only in conformance with the capital facilities plan element of the comprehensive plan.
(3)(a) Except as provided otherwise by (b) of this subsection, impact fees shall be expended or encumbered for a permissible use within ten years of receipt, unless there exists an extraordinary and compelling reason for fees to be held longer than ten years. Such extraordinary or compelling reasons shall be identified in written findings by the governing body of the county, city, or town.
(b) School impact fees must be expended or encumbered for a permissible use within ten years of receipt, unless there exists an extraordinary and compelling reason for fees to be held longer than ten years. Such extraordinary or compelling reasons shall be identified in written findings by the governing body of the county, city, or town.
(4) Impact fees may be paid under protest in order to obtain a permit or other approval of development activity.
(5) Each county, city, or town that imposes impact fees shall provide for an administrative appeals process for the appeal of an impact fee; the process may follow the appeal process for the underlying development approval or the county, city, or town may establish a separate appeals process. The impact fee may be modified upon a determination that it is proper to do so based on principles of fairness. The county, city, or town may provide for the resolution of disputes regarding impact fees by arbitration.