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EAC Consulting, Inc. eacconsult.com City of Sunny Isles Beach • RFQ 19-11-01 • Professional Engineering and Architectural Services for Pedestrian Bridge with Park Elements Across A1A at 174th St. Environmental Approach The environmental approach for the project will center on identification of protected resources and potential contamination issues for consideration in the construction of the Pedestrian Overpass located at the Collins Avenue (A1A) and 174th Street intersection. This concept design recommends an open and elevated bridge park over the south side of the intersection, traversing east and west, to accommodate for vehicular improvements at the surface level and to bring the pedestrian to an elevated plane for an enhanced crossing experience reflected as an extension of the Samson Oceanfront Park. Smart-Sciences will identify protected resources and potential contamination issues, and will work with the design team to minimize and avoid impacts to the greatest extent practicable. Smart-Sciences conducted preliminary research for the study area. Based on GIS and ETDM review, Smart-Sciences has identified the following environmental considerations and their potential effects: Contamination: Few potential hazardous materials sites were identified within the vicinity of the proposed pedestrian bridge - including FDEP storage tank contamination monitoring sites and petroleum contamination monitoring sites. Potential Effects: A Contamination Screening Evaluation Report will be prepared. This will be important for dewatering, areas of earthwork, and placement of exfiltration trench. Wetlands/Surface Waters: No wetlands or surface waters are present at the landing areas of the proposed pedestrian bridge or along the corridor. No wetland permitting with the County, State or USACE is required. Potential Effects: None Wildlife and Habitat: The proposed pedestrian bridge lies within the US Fish and Wildlife Service consultation areas of the American Crocodile, Florida bonneted bat, piping plover and the manatee. Several trees are located in the landing areas of the proposed pedestrian bridge. Potential Effects: A Listed Species Technical Memorandum will be prepared. If endangered or threatened species involvement is identified, a biological assessment for formal consultation will be prepared. There are numerous street trees and structures within the proposed project location that could be suitable for roosting by the Florida bonneted bat. A roosting or acoustical survey may be required. There is no in-water work proposed, therefore, there are no anticipated impacts to manatees and American crocodiles. There is also no work proposed in habitat for the piping plover, therefore no anticipated impacts are expected. Trees: If trees are proposed for removal or relocation a tree removal permit will be required from Miami-Dade County. Cultural Resource Assessment Janus Research prepared a cultural resources desktop analysis and field review in December of 2019; it is currently under review by the State Historic Preservation Officer. As part of this documentation two historic resources were identified, a portion of Collins Avenue and a building at 18080 Collins Avenue, both are considered ineligible for inclusion in the National Register. No archaeological resources were identified. As part of this most recent RFP, Janus Research would evaluate the latest project improvements to determine if additional resources will need to be documented in compliance with state and federal regulations. Roadway Safety The Project Team will comply with all safety vertical and horizontal clearances and setback requirements while also designing a pedestrian bridge that will fit well in the context and become an attractive link between the neighborhood and the beach. We will propose a construction sequence that minimizes impacts to the busy roadway below. Maintenance of Traffic Given the high volume of vehicles and pedestrians using Collins Avenue, safety of the traveling public and construction workers are paramount for this project. Not only must a safe work zone be guaranteed, but the public must confidently perceive it as such. The EAC Project Team will prepare a construction phasing and Maintenance of Traffic (MOT) sequence that makes safety considerations front-and-center. It is expected that the construction of the towers and pedestrian ramps on both sides of Collins Avenue can be constructed without impacting vehicular traffic. Appropriate measures to detour pedestrian traffic will be provided should sidewalks and paths in the park require closure. Construction of the towers will be performed one at a time in order to keep one side of Collins Avenue unimpeded at all times, allowing for continuous pedestrian movement. Vehicles may not use Collins Avenue during the erection of the bridge structure which will warrant closure of the roadway. It is estimated that the erection of the bridge, ensuring proper bracing of all elements and confirming it is safely in place may take up to three days. Detours for vehicles will be provided during this time. Advance notification of this closure will be communicated to the