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r) CITY OF SUN N Y ISLES CIVIL ENGINEERING SERVICES TO DESIGN STREET AND DRAINAGE IMPROVEMENTS BEACH 4.APPROACHjMETHODOLOGY In preparation for this proposal, RJ Behar has collected available information including aerial photos, land use maps, soil maps, salt water intrusion line maps, Federal Emergency Flood maps, zoning maps, wetland maps, contaminated site maps, groundwater level maps, previous stormwater drainage studies in nearby areas, and construction plans of adjacent projects We have also visited the site, contacted the Sunshine One call for a list of utilities in the area, contacted the City of Sunny Isles Maintenance, Miami Dade County Department of Environmental Protection (DERM), and contacted and reviewed the permit files of the South Florida Water Management District. Based on the information collected, we have prepared this approach to the project. EXISTING CONDITIONS This contract is for the preparation of 100% complete design development for the construction of a drainage system along 174th Street (see attached aerial) from Collins Avenue west to just beyond the first complex curve. The envisioned drainage system shall alleviate the stormwater runoff on the roadway in the area. The existing drainage consists mainly of curb inlets and valley gutter inlets located on both sides of the street. The system is maintained by the City of Sunny Isles Beach Stormwater and Street Maintenance Department. The stormwater system receives runoff from the roadway and some offsite areas, between Collins Avenue and east of North Bay Road. We made an effort to obtain existing as-built plans of the stormwater system but they were not available. ) During our site visit, which was just after a storm event, we noted that there was standing water at depressed areas located on the southbound side of the street approximately at 230 174th Street, Tower 300. There are no drainage structures at these low points to collect the runoff, The pavement is also cracked and deteriorated, See pictures 1 and 3. Information related to the existing drainage system design, including plan layout, drainage maps and calculations were not available, Even though the existing drainage system is maintained by the City of Sunny Isles Beach, the stormwater system was built when it was part of unincorporated Miami Dade County, We will make an extra effort to try to locate this information during the design phase. Iql R .J.Behar R. J. BEHAR & COMPANY, INC. I RFQ No. 11-11-02 11