Property acquired by the Commission pursuant to the Act shall be disposed of in one of the following manners:

(a) If the Commission determines that the property acquired constitutes a substantial risk to public health and safety, the Commission may remove or destroy the property.

(b) The Commission may transfer the property acquired by gratuitous conveyance to the tribe exercising jurisdiction over the area. Notice of such transfer shall be in writing and shall be completed within sixty (60) days from the finalization of all property acquisition procedures, unless the tribe notifies the Commission in writing within that time that the property transfer is refused. In the event of a refusal by the tribe, the Commission shall remove the property.