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..,{).:: North Bay Road Pedestrian/Emergency Vehicle Bridge and Town Center Observation Deck & Boardwalk 2.1.5. Recommended Bridge Structure . Given cost, aesthetics, constructability and maintenance considerations, we recommended Alternate II, a two-span Post-Tensioned Flat Slab Bridge. This alternate will result in reduced maintenance costs and impact to the area. Additionally, this alternate will provide the City of Sunny Isles Beach both a functional and aesthetically designed structure that will invite residence and visitors to the City's Park and Town Center Observation Deck and Boardwalk. 2.2. ENVIRONMENTAL PERMITTING Based on our initial project overview and experience with the permitting agencies, the bridge and boardwalk are permittable projects due to the potential educational and nature appreciation opportunities the boardwalk would offer; however, the following issues, among others, may need to be addressed during the permitting of this project. The project lies within the Intracoastal Waterway and on the northern limits of the Biscayne Bay Aquatic Preserve. As such, no degradation of water quality to Outstanding Florida Waters or the Biscayne Bay Aquatic Preserve will be allowed during project construction or operation. The proposed bridge structure may not result in significant permitting issues if justification that the proposed bridge structure will not impact navigation is provided or that historically this portion of the waterway is not a navigable area. This determination would eliminate the need for a full bridge permit from the USCG and would only require an "Approval Letter". . However, the proposed Town Center Observation Deck and Boardwalk a may encounter major permitting issues; these issues will need to be addressed during the permitting of this project. Since the boardwalk is proposed to be placed waterward of the mangroves determination of the owners of the riparian land adjacent to these mangroves is imperative to determine the permitting. These as the owners of the adjacent land may need to become co-applicants with the City on the FDEP and DERM permits since the boardwalk could potentially restrict future usage of their property. Along with minimizing mangrove impacts, a benthic survey would also be required to ensure no benthic resources such as seagrasses would be impacted due to shading by the proposed project. Any impacts to benthic resources or mangrove wetlands would need to be mitigated for the loss of wetland function, including essential fish Several regulatory agencies will be involved in the permitting of this project. Federal Permitting Agencies · US Coast Guard - Bridge Construction Permit (Contact: Brody Rich) · US Army Corps of Engineers - Section 404 Dredge and Fill Permit (Contact: Leah Oberlin) Federal Commenting Agencies . · US Fish and Wildlife Service - Threatened and Endangered Species · National Marine Fisheries Service - Essential Fish Habitat, Marine Mammals Request for Qualifications No. 07-03-01 Page 8 of 15