Comprehensive Everglades Restoration Plan, Biscayne Bay Coastal Wetlands, L-31E Flow-Way, Contract 5C (A Phase I Project): Pump Stations S-710 And S-711; Seepage Canal C-711W; Miami-Dade County, Florida

DESCRIPTION OF WORK: The Biscayne Bay Coastal Wetlands (BBCW), Contract 5C covers the construction of Pump Stations S-710 and S-711, spreader systems, a seepage canal (C-711W), with associated berm, and the installation of a riser board assembly on the culvert located on the south bank of C-103, between S-710 and S-711, in the North Canal Wetland (NCW; the land south of C-103 being hydrated by S-710 and S-711). The riser board assembly will allow for water level management in the NCW. S-710 and S-711 are both 40 cfs pump stations located on the south bank of the C-103 that will pump water from C-103 and discharge it into the NCW through a dissipation/spreader basin and concrete-lined spreader channel for S-711 and a dissipation/spreader basin for S-710. C-711W (with the berm) will be located in the NCW, along the western boundary, to prevent NCW water from seeping to the west, onto private lands. C-711W will drain NCW seepage water to C-103, through a culvert, through the C-103 embankment. The pump stations will have manatee protective barriers, trash racks, and dewatering features, complete with stop logs. Controls will be located in a stand-alone, precast concrete building adjacent to the pump station structure. The pumps will have remote operation capability. Construction activities include installation of precast concrete, H-piles, king piles, sheet piles, concrete piles, precast concrete, cast-in-place concrete, tremie concrete, flowable fill, control buildings, pumps, pump platform, pump station controls, electrical work, lighting, lightning protection, fencing, excavation, backfilling, stockpiling, clearing and grubbing, grading, placement of topsoil, sodding, limerock road topping, riprap and bedding stone, installation of stilling wells, stilling well platforms, staff gauges and floating barriers. Additional construction activities may include dewatering, and installation of cofferdams. Florida Power & Light (FPL) will intercept, modify, and upgrade the existing overhead three-phase powerline at the intersection of SW 107th Avenue and 136th Street (south bank of Canal C-103 / Mowry Trail), to provide a new, overhead, three-phase powerline for Pump Stations S-710 and S-711. FPL will route the overhead powerline East along Canal (C)-103 (Princeton Trail), within the SFWMD 30-foot ROW, to the pump stations. The required run will be approximately 4,065 linear feet. FPL will provide and install overhead conductors, poles (approximate 27 poles), transformer(s), and other required hardware as shown on the contract plans, to provide a 277/480V, 60Hz, 250A service for S-711 and 277/480V, 60Hz, 250A service for S-710. In-water construction utilizing divers will be necessary, because of dewatering difficulty due to the local geology and high conductivity of the underlying limestone. Soil borings indicate the presence of hard limestone within the project area. Excavation of limestone may require large excavator with rock bucket. Materials for embankment and backfill construction can be obtained from offsite sources provided by the Contractor and approved by the Contracting Officer or the Contractor can process the excavated material to meet the classification of satisfactory material for embankment fill and or select fill at no additional cost to the Government. Contract does not allow blasting within the construction limits.

Lift and Pump Stations, New Construction.

Division 02 -	Existing Conditions, Environmental Assessment, Natural Environment Assessment, Water Remediation.
Division 03 -	Concrete.
Division 04 -	Masonry.
Division 05 -	Metals.
Division 06 -	Wood, Plastics, and Composites.
Division 07 -	Thermal and Moisture Protection.
Division 08 -	Openings.
Division 09 -	Finishes.
Division 10 -	Specialties, Signage, Toilet, Bath, and Laundry Accessories, Fire Protection Specialties, Fire Extinguishers, Storage Specialties.
Division 11 -	Equipment.
Division 12 -	Furnishings.
Division 14 -	Conveying Equipment, Scaffolding.
Division 21 -	Fire Suppression.
Division 22 -	Plumbing.
Division 23 -	Heating, Ventilating, and Air Conditioning (HVAC).
Division 26 -	Electrical.
Division 27 -	Communications, Data Communications, Voice Communications, Audio-Video Systems.
Division 28 -	Electronic Safety and Security.
Division 31 -	Earthwork.
Division 32 -	Exterior Improvements, Fences and Gates, Wetlands, Turf and Grasses.
Division 33 -	Utilities, Common Work Results for Utilities, Water Utility Distribution Equipment, Water Utility Pumping Stations, Wastewater Utility Pumping Stations, Sanitary Utility Sewerage Force Mains.
Division 40 -	Process Integration, Water Process Piping.
Division 45 -	Industry-Specific Manufacturing Equipment.
Division 46 -	Water and Wastewater Equipment.