Study; JLARC; non-federal sponsor contributions by localities to conduct coastal storm risk management 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 coastal storm risk management studies. The study also directs JLARC to determine whether a separate fund should be established to support and manage cost-share requests from non-federal sponsors for such studies.