OMOHUNDRO WTP HISTORIC BUILDINGS RENOVATION
Scope of Work: $17M Renovation of Nashville's historic Omohundro WTP Pumping Station and Boiler Building, constructed in the 1920’s, required complete interior demolition and reconfiguration to include a new state of the art control room, high efficiency boilers, break room, staff and meeting facilities, clay tile roof replacement, restoration of original steel windows with glass replacement, and interior and exterior masonry cleaning and tuck-pointing. Additionally, Intake # 1 and the original 120-foot tall flue received masonry and roofing renovations.
MNAA WATER SOURCE GEOTHERMAL SYSTEM DESIGN-BUILD PROJECT
Scope of Work: This $10M geothermal system provides cooling for the Nashville Airport with annual energy cost savings in excess of $400,000. The project included installation of over 8,500 LF of 20-inch HDPE, including crossings of Donelson Pike, Runway 2R-20L, and the adjacent taxiway within a 60-day runway shutdown period. Additional work consisted of construction of a recirculating condenser pump building, installation of 11 each lake plates submerged 50 feet deep in the former Hoover Quarry, and modification of the existing cooling system to provide additional efficiencies.
MARINE PROJECTS - 2015/2016
Scope of Work: In Forsyth County, GA, Blakley installed a 36-inch HDPE outfall diffuser in the Chattahoochee River. The Rainbow City, AL Project included a 500 LF river crossing with 16-inch ductile iron pipe. On the DeKalb Project, Blakley installed triple 36-inch steel pump suction casings with 18-inch intake screens in Center Hill Lake. The Turnbull WTP Raw Water Intake, consisting of a new 30-inch steel header and intake piping, was installed in Big Turnbull Creek in Dickson, TN.
NASHVILLE RIVERFRONT LANDING
Scope of Work: The work consisted of demolition of existing underwater obstructions, construction of a new park, and construction of marine facilities including sheet piling and pipe piling for a new dock for the General Jackson Riverboat, 36-inch mooring dolphins, gangways and a floating dock system, and underwater excavation and installation of articulated concrete mats for a walk-in beach area.
MNAA STORMWATER TREATMENT PLANT
Scope of Work: The work consisted of improvements to the existing stormwater collection and treatment system including: significant sitework and grading, buried piping and ductbanks, cast-in-place concrete including a clarifier, installation of slide and diversion gates, HDPE pond liner repairs, installation of pumps, piping, instruments, and implementation of new instrumentation and controls systems. This work was performed in compliance with the Airport’s federal quality control program, their escort and security procedures, and with zero accidents.
LAKE BRANDT RAW WATER PUMP STATION MODIFICATIONS
Scope of Work: The work consisted of the installation and maintenance of a 30 MGD, 30-inch HDPE bypass piping system through an existing underground box culvert, demolition of existing pumps, piping, and valves, wet well rehabilitation, and the installation of three vertical turbine pumps and variable frequency drives with associated piping and valves. All work was performed while maintaining constant operation of existing facilities.
GAYOSO SEWER PUMPING STATION IMPROVEMENTS
Scope of Work: This work required the installation and maintenance of a 30 MGD bypass pumping system, demolition of existing pumps, piping, and valves, concrete coatings work, installation of three 215HP dry pit submersible pumps, 24-inch piping and valves, sluice gates, and electrical system upgrades.
CENTRAL WWTP PRIMARY CLARIFIERS PROJECT
Scope of Work: The work consisted of jet cleaning approximately 3,000 LF of sewer channels and tanks, haul-off of approximately 2,200 CY of grit and debris, installation of 256 air diffusers in the clarifier channels, and construction of a new 25-foot deep pump station. We handled all disposal procedures required to remove grit and debris from plant property.
LAKEWOOD INFRASTRUCTURE PROJECT
Scope of Work: This project consisted of the replacement of approximately 10,000 linear feet of sewer piping, replacement of 10,000 feet of water mains, installation of approximately 9,800 feet of concrete stormwater pipeline, and repaving of all affected streets. Traffic control measures and communication to the community was handled for the two-year duration of this project. Water service tie-ins were performed during nights, weekends, and whenever else necessary to ease the burden on local businesses and residents.
CUMBERLAND RIVER BANK STABILIZATION
Scope of Work: The work consisted of riverbank stabilization by driving steel sheet piling with 120-foot long tie-back anchors, forming and placing concrete pile caps, underwater excavation for rip rap placement, installing a gabion retaininge wall, and finishing with new landscape features on the bank.
WEST KNOX RAW WATER INTAKE - MELTON HILL LAKE
Scope of Work: The work consisted of the subaqueous excavation and installation of 36-inch diameter ductile iron pipe, valves, and fittings, installation of 6-inch diameter air lines, and installation of two intake screens with a concrete support pier anchored into rock.