Section 513.4 - What notice will the Commission give to a debtor of the Commission's intent to collect debts?(a) When the Chairman determines that a debt is owed to the Commission, the Chairman will send a written notice (Notice), also known as a demand letter. The Notice will be sent by facsimile or mail to the most current address known to the Commission. The Notice will inform the debtor of the following:(1) The amount, nature, and basis of the debt;(2) The methods of offset that may be employed;(3) The debtor's opportunity to inspect and copy agency records related to the debt;(4) The debtor's opportunity to enter into a written agreement with the Commission to repay the debt;(5) The Commission's policy concerning interest, penalty charges, and administrative costs, as set out in § 513.5 , including a statement that such assessments must be made against the debtor unless excused in accordance with the FCCS and this part;(6) The date by which payment should be made to avoid late charges and enforced collection;(7) The name, address, and telephone number of a contact person or office at the Commission that is available to discuss the debt; and(8) The debtor's opportunity for review.(b) A debtor whose debt arises from a notice of violation and/or civil fine assessment that has become a final order and that was subject to the Commission's appeal procedures at 25 CFR parts 580 through 585 may not re-litigate matters that were the subject of the final order. 66 FR 58057 , Nov. 20, 2001, as amended at 80 FR 31994 , June 5, 2015