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City of Sunny Isles Beach RFQ No. 18-11-01 | Consulting Engineering Services for Golden ShoresPump Station Rehabilitation (CCNA) CGA recently completed the design, permitting (SFWMD, BC-EPGMD, ACOE, FDEP), and bidding services for the stormwater retrofit project for City of Hallandale Beach. The project is currently in construction (2018) and CGA is also providing CEI services for the project. The construction scope of work includes 17 drainage wells, 70000 GPM pump station discharging from the canal into the drainage wells, 3887 LF of drainage force main (24” to 60” DIP), 339 LF of RCP (15” to 18” diameter), 4 (48” diameter) flap gates at Schaffer Canal, 6 additional storm inlets/manholes, regrading of swales, dredging/restoration of existing canal, and associated roadway infrastructure improvements. The construction cost is $9.3 million. CGA’s professional services fee for the entire project is $782,395. This tidally influenced basin is bounded by Hallandale Beach Boulevard, S Dixie Highway, SW 11th Street and SW 8th Avenue in the City of Hallandale Beach, Florida. Land uses within the study area are primarily single-family residential. There are a number of drainage facilities within the project area with limited conveyance to the existing Schaffer Canal. The conveyance system is subject to the effects of tidal fluctuation. Consequently, at high tide there is virtually no head available to drain the basin. The lack of conveyance capacity within this system has led to multiple Severe Repetitive Loss (RL) properties and the complete inundation of the roadway system for extended periods during storm events of lesser frequency than that required by SFWMD. Using ICPR, CGA modeled and designed an improved drainage system conveying water to a new duplex pump stations located in the Schaffer Canal which is connected to a total of 17 deep injection drainage wells. The new wells are pressurized with 15 feet of head in order to produce the necessary discharge into the G-III aquifer. Additionally, as part of the permitting requirements, a complex monitoring system will be installed to allow for real time review of pressure data at each drainage well along with monitoring wells installed within the project area to record ground water levels. The existing gravity outfall will be modified with the installation of four (4) “backflow” flap gates in a control structure at the downstream ends of the gravity system. The flap gates are designed to stop the tidal water from flowing back into the gravity system at higher tides Agency:Address: Tel:POC: Term: City of Hallandale Beach630 NW 2nd St.Hallandale, FL 33009954.597.3700Manga EbbeProject Manager2017 - Present Hallandale Beach SW Quadrant Drainage Improvements - City of Hallandale Beach 149