Upon receipt of a request for a conference, the official imposing the sanction shall arrange such a conference with the participant or contractor and may designate another official to conduct the conference. The participant shall be given the opportunity to be heard within 10 business days of receipt of the request. This conference precedes, and is in addition to, the formal hearing provided if an appeal is taken under § 801.1113. Although formal rules of procedure do not apply to the conference, the participant or contractor may be represented by counsel and may present all relevant information and materials to the official or designee. After consideration of the information and materials presented, the official shall, in writing, advise the participant or contractor of the decision to withdraw, modify or affirm the limited denial of participation. If the decision is made to affirm all or a portion of the remaining period of exclusion, the participant shall be advised of the right to request a formal hearing in writing within 30 days of receipt of the notice of decision. This decision shall be issued promptly, but in no event later than 20 days after the conference and receipt of materials.