The Board may impose appropriate sanctions on any person or entity that violates the regulations of this part, an order of the Board, or any other statute or regulation that governs the appeal.

(a) The sanction may include, after notice and opportunity for the person or entity to respond, dismissal of all or part of an appeal, denial of a motion, refusal to consider a filing, or the exclusion of evidence from consideration.

(b) Absent extenuating circumstances, the Board will dismiss an appeal if the appellant has failed to provide financial security when required by regulation or order; violated the regulations of this part repeatedly; or caused prejudice to another party because of a violation of an order or applicable regulation.