Featured projects.

Consists of the installation of a Powdered Activated Carbon Feed System, Heated Storage Building and all other related appurtenances.

This project consists of utilizing a temporary Frac tank, piping, & pumps to divert flow over multiple phases. The package plant will receive new coatings in the Aeration Basins 1 & 2, Surge Tank & Sludge Holding Tank along with other miscellaneous components. Replacement of approximately 900sf of steel grating & handrail with new aluminum. In conjunction with all of this work the plant will receive a complete electrical system overhaul with new power supply duct banks, standby generator, ATS & electrical canopy to serve as the power distribution center. All work is to be performed while maintaining plant operations without disruption.

Project included construction of a new water treatment facility; consisting of new deep wells, 6500’ DIP and PVC yard piping, chlorination feed systems and small bore pvc piping, cast in place raw water reservoir and two waste water holding tanks, 6300 sf operations building/laboratory, pressure filters, water softeners, interior DIP, electrical, HVAC and plumbing.

Project includes the construction of a new 7 MGD vortex grit chamber including grit pumps and grit classifier, along with associated piping, electrical and site work. Project consists of replacing the mechanisms for two 50-ft diameter clarifiers including all associated electrical work.

Project includes the demolition of two existing 85’ clarifier mechanisms & internal components. Furnishings & installation of two new stainless steel 85’ clarifier mechanisms & internal components. Project is restricted to specific sequencing in which only one clarifier shall be out of service at any given time.

The project includes the construction of a new 7 MGD vortex grit chamber including grit pumps and grit classifier, along with associated piping, electrical, and site work. Project consists of replacing the mechanisms for two 50-ft diameter clarifiers including all associated electrical work.

Project included Surface Restoration of (3) prefabricated steel WWTP, (6) new blowers,
(1) new headworks structure with mechanical bar screen and associated electrical work.

Project consisted of replacement of the tertiary filter system with a Cloth-Media Filtration System, structural modifications and repairs to the filter basin, installation of all piping, valves, weir gates, and appurtenances, along with Electrical and SCADA upgrades.

This project involves the replacement of 3 existing horizontal pumps with 2 new high capacity 450 HP pumps operating on new VFD’s at the University Lake Pump Station. Additional work will also be upgrading the existing 4160V switchgear with 480V switchgear, complete replacement of pipe gallery, modifications to the existing influent & discharge line, Electrical & SCADA improvements to include provisions for the future potassium permanganate feed system, complete roof replacement, & several other modifications to assist with OWASA’s continuous efforts to meet the community’s evolving needs for sustainable, reliable, and high-quality water, wastewater (sewer), and reclaimed water services.

Project consisted of replacement of two existing extended shaft dry-pit pumps and motors and two closed-coupled dry-pit pumps and motors: including valves, piping, electrical equipment, etc. with four 175 HP, VFDs, dry-pit submersible pumps, pump valves and piping, permanent bypass pumping discharge connection, electrical switchgear, motor control center and SCADA. The Project required a complete bypass of the 9.4 MGD pump station. By-Pass system included temporary control panels, VFDs, Diesel and Electric By-pass Pumps.

Improvements to the Westside sewer system PS including the addition of a 4th 200 hp dry pit pump, new seal water system, DIP header modifications, by-pass pumping, and relocating a surge valve and associated yard piping.

Project consisted of a 1.8 MGD redundant bypass system with chopper pumps to allow for replacing 10” Clay Pipe and 15” Clay Pipe with a 93 lf of new 18” DIP, new inline grinder with fiberglass manhole. Complete replacement of the existing lime conveyor. Installation of new main electrical switchgear and 750 KW standby power generator.

The project also generally consists of the removal of existing horizontal split case pumps at both pump stations and the installation of new skids comprised of three pumps, associated fittings, a pump control panel, performance testing, and start-up services.

Constructed conversion of existing aeration basins to aerobic digesters, new digested sludge pumps,new sludge screw presses, new dewatered sludge pumps, new solar sludge drying beds, related sitepiping, grading, drives and all related appurtenances.

Project consisted of the demolition of existing air piping, 800LF of new 30 inch air distribution piping with control valves & bellows supported both overhead & underground. Approximately 120 LF of 16-inch temporary air bypass piping. This project was critical to resolving GUC’s identified issues with compressed air delivery to the South Aeration Basins. An energy efficiency study quantified energy losses in the air piping of over $172k /year.

New construction of a high service finished water Pump Station. This included (5) 400 HP Vertical Turbine Pumps with VFDs and associated switchgear. Project also included new electrical building to house (3) 600 HP VFDs with a 3000A switchgear with space for expansions for a separate HSPS. New Electrical Building was to service an existing pump station and replace the VFDs and Switchgear. Swap over involved well-coordinated shut downs in very specific sequence while keeping the existing PS on line. We also installed 175 tons of 24” – 42” DIP Yard Pipe w/precast meter vaults, valves and numerous tie ins and shut downs. 30 tons of interior DIP piping – size 8” – 30”. 2300 L.F. of 12” PVC decant pipe to the Catawba River to include discharge piping and diffusers out into the river. 860 L.F. of 6” directional bore. Modifications to the existing backwash lagoon with new submersible pumps, submersible mixers, floating decanters and divider wall. Also to include electrical, site work, paving, and 2,273 LF 48” DIP for raw water force main to include valves, tie-ins, and meter vault.

Project consisted of construction of a new sludge equalization basin with sludge pump station, new belt press building with belt press and conveyors, site piping.

Project consist of removal and replacement of two existing 300 HP vertical centrifugal pumps with extended motors, new mechanical bar screen and screenings; washer/compactor in existing bar screen structure. New electrical building to house new MCC and VFD’s demolition and By-pass pumping to enable us to make the necessary tie ins and pump change outs. Site work, fencing and concrete paving.

The project consisted of moving an existing out of service Packaged Steel WWTP in Harnett Co. to the existing Town of Spring Hope’s WWTP facility 100 miles away. Major on site piping rerouting and abandonment of structures onsite. The project also included the addition of an Emergency Backup Generator to the existing site and new facilities. Additional work was initiated to replace the existing influent pumps and to update various motors and parts on existing equipment onsite for a fully functioning facility. Funding was provided by USDA, Rural Development, and the Town.

Construction of new stand alone Electrical building outside of existing Raw Water PS. New building house all new Switchgear, VFDs, controls sitework and retaining walls.

Project consisted of construction of new water treatment plant with pressure filter, softener, detention tank, aeration, masonry, operations building to house equipment, lab, chemical feed, yard piping, EQ basin, remote well sites (2), HVAC, paving, and grassing.

Project consisted of installation of 32 backup generators at individual pump stations throughout the Asheville water system. Of the 32 sites, 25 were fixed sites involving clearing, grading, demolition, site improvements including fencing, retaining walls and site piping along with major electrical and SCADA upgrades. 7 sites were prepped for a portable Gen Set. Largest site at Mills River WTP included the installation of a 2250kw Gen Set indoors with a remote radiator and 10k gallon AST Diesel Fuel System. A new switchgear system was installed that now allows the plant to run on generator power and can put reverse power on the grid. Project was value engineered prior to start and sites were released as easements and acquisitions were obtained.

Project was the construction of aeration basin, headwork’s structure, influent, effluent, and RAS Pump Station including clarifiers, disk filters and contact chambers, sludge holding tank, aerobic digester, chemical feed and demolition of existing structures and process piping.

Project consisted of a new precast WWTP at a green field site. Project included, yard piping influent/effluent pump stations, chemical feed, aeration basins, digesters, non potable water system, clarifiers, disc filters and UV system.

Project was the construction of 30’ deep Pump Station, Concrete Holding Lagoon, aeration, 7500 lf 16” DIP , 3500 lf and 6” PVC, Retrofit Existing Pump Stations, and site-work.