Coastal Systems International, Inc.

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~ m SYSTEMS ~ May 26, 2010 City of Sunny Isles Request for Qualifications for Professional Engineering Services RFQ No.: 10-04-01 Page 4 and reduction in beach nourishment event frequency overall may be beneficial in maintaining adequate beach width for shore protection and for recreational use. Coastal Systems conducted a comprehensive coastal engineering study for Sunny Isles to evaluate coastal processes along the shoreline of Sunny Isles. Detailed hydrographic surveys of two existing submerged breakwaters were conducted along with beach profiling to provide data for input into the numerical modeling software. Offshore wave statistics were prepared utilizing wave data from 1980-1999 to obtain annual conditions that influence sediment transport. Wave modeling was conducted by utilizing the Danish Hydraulics Institute (DHI) MIKE 21 Spectral Wave (SW) model to simulate offshore waves propagating onshore. This model was coupled with the MIKE-21 Hydrodynamic (HD) model to determine the littoral current generated by breaking waves. The resulting sediment transport was evaluated to identify erosion trends along the shoreline. The numerical modeling results indicated that the north segment is characterized with the highest degree of erosion, while the south section was mildly erosional, and the middle section was relatively stable. Two hot spots were identified in the northern section, and wave focusing results were evaluated. Beach management recommendations were prepared based on the coastal engineering results, and coastal structure concepts were prepared for shore stabilization. Additional beach management recommendations were provided as longer term solutions to reduce erosion rates, mitigate local hot spots, and to extend the life of beach nourishment projects. Trump Redevelopment Project, Sunny Isles Beach, Florida The Trump Redevelopment project consisted of three phases: Trump Palace Condominium, Trump Royale Condominium, and Trump Sonesta Hotel. Trump Palace Condominium consisted of the construction of a 45 story, 278 unit tower with tri-Ievel understructure parking garage, cabanas, swimming pool, spa, water features, hardscape, and landscape/lighting activities. Trump Royale Condominium included the construction of a 45-story, 391 unit tower on a bi-Ievel garage pedestal, swimming pool and spa atop the garage, on-site and off-site dune enhancement activities, and hardscape, landscape, and lighting activities. For the Palace and Royale Condominiums, Coastal Systems obtained the Department of Environmental Protection (DEP) Coastal Construction Control Line (CCCL) Permits as required for structures and activities that cross seaward of the CCCL. Lighting plans were approved by the Florida Fish and Wildlife Conservation Commission as part of the CCCL permit process. Coastal engineering services were provided to determine the anticipated impacts of a 100-year storm event on the structure. This analysis provided the anticipated wave crest height, as well as the eroded profile associated with a 100-year storm event. A Wave Load Analysis was also conducted to provide the wave load forces on vertical walls and columns during a 100-year storm event. Additionally, Coastal Systems provided DEP CCCL permitting services for the Trump Sonesta Hotel to construct a shaded seating area seaward of the hotel and to provide dune enhancement activities, landscaping, and lighting activities on site. The lighting activities/plans were also approved by the Florida Fish and Wildlife Conservation Commission as part of the CCCL permit process. La Perla, Sunny Isles Beach, Florida The La Perla Condominium project consisted of construction of a 42 story, 326 unit superstructure with a multi-level parking base. The beachside pool deck included a free-form swimming pool, circular spa, and multiple metal-framed cabana structures. Additionally, the developer remodeled the adjacent 163rd Street end that acts as a public access point to the beach. Coastal Systems provided environmental permitting as well as coastal engineering services for the project. Specifically, Coastal Systems obtained the Department of Environmental Protection (DEP) Coastal Construction Control Line (CCCL) Permit as required for structures and activities that cross partially or wholly across the recorded CCCL. In addition to the structures noted above, Coastal Systems obtained authorization for excavation and fill, hardscape, landscape, and lighting activities. Lighting plans were approved by the Florida Fish and Wildlife Conservation Commission. Coastal Systems' coastal engineering team prepared a site specific 100-year Corporate Office: 464 South Dixie Highway. Coral Gables, Florid.l33146. Tel: 305-661.3655 . Fax: 305.661.1914 Regional Office: 2047 Vista Parkway, Suite 1010 West Palm Beach, Florid.l33411. Tel: 561.640.1003. Fax: 561.640.1009 ,,""....... .coastalsvstemsint .com- info@coastalsysternsint.com