1-55-14. Referral of debt to debt collection agency. If the center is unable to collect any debt referred to it within the account receivable cycle, the center shall forward the debt to a collection agency or agencies for collection for a period of no less than one year, or as otherwise stipulated in the contract between the center and the collection agency. The debt collection agency shall be permitted to add a collection charge, not to exceed twenty percent of the debt, to the debt forwarded to the collection agency as payment for its collection services. The center or a collection agency may retain debt beyond the account receivable cycle or other applicable collection period if the entity is actively engaged in substantive collection efforts, or based on other good cause. The Bureau of Administration shall promulgate rules pursuant to chapter 1-26 concerning the process of contracting with and referring debt to debt collection agencies.