R-4 26-0623 Resolution Providing Notice of the Decision to Proceed with the Unsolicited Proposal Submitted by David Mancini & Sons, Inc. for the Design, Construction, and Delivery of the Riverland Stormwater Improvements Project, and Authorizing Negotiations of a Proposed Interim and/or Comprehensive Agreement in Accordance with Section 255.065, Florida Statutes - (Commission District 3)