020-15 Wyo. Code R. § 15-4
(a) The Director shall notify the operator in writing of his decision to release or not to release all or part of the bond(s) within 75 days of notification to the operator of a complete request, if no public hearing is held pursuant to Section 2. If there has been a public hearing, the notification to the operator shall be within 30 days from the decision. At the same time, the Director shall also notify any persons who either filed written objections or objectors who were a party to the hearing proceedings, if any, of the decision.
(b) The Administrator shall notify the municipality in which the surface coal mining operation is located by certified mail at least 30 days prior to the release of all or a portion of the bond.
(c) If bond release is disapproved, the notice shall include any recommended corrective actions necessary to secure the release and specify that an opportunity for public hearing is afforded upon request.
020-15 Wyo. Code R. § 15-4