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12CES Consultants ● City of Sunny Isles Beach RFQ No. 18-11-01 Constructability Assessment // The proposed system will be refined based on a constructability assessment considering the subsurface conditions; the potential existing and future utility conflicts; the anticipated methods of construction; the overall timeline of construction; the current use of the areas to be disturbed; and the surrounding properties. Operation and Maintenance // As with any infrastructure system, once the design and construction phases are complete, the operation and maintenance (O&M) of the system continues for the life of the system. Our team understands the operational and maintenance requirements of each of the proposed system components and will account for this requirement when siting each of the proposed systems components. Maintenance costs and efforts can be minimized by implementing easy access hatches. Structural Design The pump station design will consist, where applicable, of precast elements to speed construction. Casting will be performed as excavation proceeds, so elements can be placed immediately after excavation reaches the necessary depths. Cast-in-place concrete is limited to tremie bases, structure inverts, and connections between the pollution control units and diversion/ bypass weir structure. Precast designs for the junction structures will adhere to FDOT Index 200 requirements, except where installation depths require greater reinforcement and concrete thicknesses. Access covers will be designed for a minimum of HS-20 loading. Structures will be sized for hydraulic configurations and the wet well structures will be optimized in dimension, based on the pump manufacturer’s requirements for the necessary internal hydraulic characteristics of the pump station wet well. Structures will be checked for buoyancy and appropriate measures will be taken to ensure an adequate factor of safety. Structures will be set to the final controlling invert elevation of the intake piping as specified in the City. Electrical Design Our Team’s electrical design approach is focused around efficiency and reliability. This means having the power when needed through early coordination with FP&L, as well as maintaining the required electrical capacity. The major components of the electrical and controls system are as follows: Florida Power and Light (FP&L) electric service, manual transfer switch, portable generator receptacle, switchboard, VFDs, submersible pumps, 480V panelboard, and 280Y/120V lighting panelboard. To meet the requirements of the installed capacity pumping system a new 1,000 A, 480V electric service will be provided by FP&L. Coordination with FP&L will begin very early in the process to minimize potential delays. FP&L will furnish and install primary feeder, padmounted transformer and concrete pad, metering current transformers (CTs), and utility meter. A generator receptacle will be installed to provide a means for supplying an alternate source of power to the pump station, in the event the FP&L service becomes unavailable, or if required for other reasons. The receptacle is sized for running just two of the pumps simultaneously. Switchover from utility power to standby power will be provided via a manual transfer switch. As part of the site improvements, site lighting will be provided to meet the minimum illumination level of 0.5 fc and other design parameters listed in the DCP and will include energy efficient LED luminaries. Exterior electrical equipment, such as the pump control panel, will be buffered with an architecturally designed enclosure. We understand that the City is currently designing the enclosure that is required, per the DCP. The Pump Station panel will be installed such that the lowest elevation of the control panel is at, or above, the Base Flood Elevation (BFE) plus two (2) feet or elevated to 8.44’ NAVD. The pump control panel will include a control unit, telemetry unit, Ethernet, switches, relays, time delay components, and antenna, and will be furnished with the required equipment for monitoring and recording of pump station telemetry for SCADA. A spare conduit will be provided for installation of a radio antenna required for future integration of the pump station into the SCADA system. Utility Coordination Relying on the CES Teams’ collective experience in the region and hands-on knowledge particularly associated to infrastructure improvements within the Coastal Communities, we find that proactive utility coordination plays a critical role in completing a project successfully. Conflicts with utilities not only affect project costs, they also have a direct impact in the project timeline and generate the inconvenience of longer construction activity for residents and businesses in the vicinity and can disrupt essential services to the public. As such, early collaborative coordination with utility