(a) The Mayor may promulgate rules to implement the provisions of this chapter, including provisions concerning site assessment, financial assurance, feasibility studies, response actions, enforcement, cleanup standards, natural resources, public participation, and other provisions relevant to this chapter.(b) The Mayor shall have the authority to enter into cooperative agreements, cost-sharing and other agreements for which states are eligible under the Federal Act and other statutes in order to further the purposes of this chapter.June 13, 2001, D.C. Law 13-312, § 801, 48 DCR 3804; Apr. 8, 2011, D.C. Law 18-369, § 2(n), 58 DCR 996.