Study; JLARC; non-federal sponsor contributions to conduct legacy property managed retreat studies; report. Directs the Joint Legislative Audit and Review Commission (JLARC) to study the methodology for determining the monetary contributions by localities or other non-federal sponsors to the total cost of legacy property managed retreat studies, as those terms are defined in the resolution. The study also directs JLARC to determine whether a stand-alone fund shall be established to support and manage cost-share requests from non-federal sponsors to provide relief to legacy property owners threatened by sea level rise.