Featured projects.

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 consists of installing a stainless-steel inclined plate settler (complete with structural beam supports, plate settler pack(s), effluent launder, and collection trough) in each of the existing seven sedimentation basins to enhance treatment performance and increase capacity from 12.0 to 14.0 mgs.

Project consisted of a conversion of the existing aeration basins to aerobic digesters, new digested sludge pumps, new sludge screw presses, new dewatered sludge pumps, 3 new solar sludge drying beds, related site piping, grading, drives and all related appurtenances.

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.

Project consists of installing a stainless steel inclined plate settler (complete with structural beam supports, plate settler pack(s), effluent launder, and collection trough) in each of the existing seven sedimentation basins to enhance treatment performance and increase capacity from 12.0 to 14.0 MGD.

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 bypassing the pump station in entirety. Demolition and replacement of the following equipment: odor control units and associated ductwork, motor control room ventilation fans, louvers, heaters, MCC/Switchgear, PLC, & all interior lighting. Relocate 2 existing VFD’s. 18.5 MGD bypass system included a separate power service, installation of three (3) temporary variable frequency drives to operate the four (4) existing pumps, with no more than three (3) of the existing pumps operational simultaneously. Installation of a temporary PLC w/ communication to the Plant. The system was installed with an ATS so that the existing onsite generator could support the system in the event of power failure.

Project consisted of fabricating and installing a stainless-steel access platform approx. 66’x7’ over an active equalization tank and replacing (2) slide gates in an existing clarifier splitter box.

Upgrades made to the WWTP including new sludge baffle curtains, new chlorination and de-chlorination feed systems, control Gates, emergency generator, replacement of effluent pumps, internals and controls.

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 consists of the removal of (2) existing manual bar screens and replacement with channel-mounted electric grinders, power cables, controls, and lift-out system. Retrofitting existing openings above grinders and installation of access hatches and fall protection above grinders. Concrete rehabilitation and coating of channel interiors. Installation of (4) floor-mounted variable frequency drives, power cables, and controls. Removal and replacement of (4) motor controllers, associated power and control wiring, and raceways. Installation of new raceways for power cables, control wiring, and interior lighting. Coordinate instrumentation and control changes with equipment and electrical upgrades. All repairs, bypassing, and equipment installation to be performed while maintaining full operation of the PS. Rogerson Drive Pump Station is the second largest pump station in the wastewater collection system and is critical to overall wastewater flow management.

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.

Project included a new bridge supported sludge thickener structure and mechanism with supplementary controls, a complete sludge pumping station including two (2) submersible pumps, wet well, valve pit and station piping.

New Landfill Leachate Treatment Plant is a new Reverse Osmosis plant to replace their outdated system used to treat landfill leachate. Project included Influent and Effluent Pump Stations, Influent forcemain, Ultrafiltration units and (2) Reverse Osmosis Process units, Chemical Feed, PEMB, MCC, SCADA Laboratory and associated sitework.

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 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 replacing the both of the filter control panels and the plants main control panel with out service interuption. Proejct also included adding or eplacing over 3 dozen motor operated valves, new flow meters, cheical feed and assocaited electircal work. Project reqired extinsive planning and coordination for over 10 timed shut down and tie ins.

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.

Project consisted of a filter air scour system for the WTP and misc. concrete repairs. Concrete repairs on the 2 million gallon finished water storage clear well, including: Removal of loose and disintegrated concrete, Preparation of the surface, Placement, finishing, and curing of repair concrete or mortar, and Application of concrete waterproofing and clear coating system.

Replacement of (4) 200 HP Influent Pumps and VFDs, New Pump Control Panel. Installation of Membrane diffusers at digesters, New SS Air piping and replacement of (16) 6″ Combo AR/PR Vacuum Valves on Effluent line.

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.

Staged WTP renovations/additions, demolitions, new sed. Basin, filter rehab (8), new filters (4), existing filter building rehab & refurbishment, existing operations building rehab, new rooms & finishes, new chemical building, new plant chemical feed system new filter building, new flocculators, rapid mixers, R.W. intake, yard piping, yard & plant tie-ins, site work, paving, fencing, etc.

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.