Water & Sewer Transmission and Collection
Turn the faucet on, clean water comes out. Flush the toilet, dirty water disappears. Most people spend very little time thinking about the process behind the scenes, unless you're one of us. Our teams of waterline and sewerline specialists spend each day thinking about how to get water where it needs to go and how to keep it from going places it has no business in being. We develop creative solutions to help store and move water, and to collect and discharge sanitary sewage. Our approach begins with planning and modeling to better analyze the pros and cons of different solutions, as we want to make sure that every solution is going to serve the needs of the present, and also grow with the needs of the future. These teams specialize in providing:
- Water Booster Pumping, Storage and Transmission Lines
- Wastewater Pump Stations and Force Main Collection Lines
- Wastewater Gravity Systems
- Infrastructure Planning
- Capital Improvement Plans
- User Rate Studies
- Preliminary Engineering and Environmental Assessment Documents
Our Work in Your Communities
Regional Transmission Mains - Neuse Regional Water and Sewer Authority
Creative policy-making helped supply clean water to 38,000 customers
The Neuse Regional Water and Sewer Authority in NC provides treated water at wholesale rates to its eight member entities (retail providers) within Lenoir and Pitt Counties.
Our teams facilitated a transmission main project for the Authority which consisted of 38 miles of 30-inch through 42-inch mains extending from the 15 mgd regional water treatment plant on the Neuse River just west of Kinston, to the vicinity east of Ayden in the Eastern Pine Water Corporation service area.
The project also included approximately 33 miles of 8, 12, 16 and 20-inch mains to deliver water at selected points within the eight member service area. In addition to the piping, the regional delivery system project included three elevated tanks (1.5 MG, 1.0 MG, and 0.75 MG), four booster pumping stations, 18 pressure reducing valves and metering stations with related appurtenances.
We saw the project through from inception to completion, including preparation of the $66 million USDA funding package, as it provided not only design services, but also construction contract administration and construction observation for the 1,200 pipes, 36 elevated tanks, 64 well pumps, and 7 booster pumping stations as they were installed.
Bentley Woods Waterline and Gravity Sewer Extension - Raleigh, North Carolina
Managing construction in an established neighborhood provided service to 18 new households
The City of Raleigh had annexed the Bentley Woods subdivision in two different phases and needed to extend water and sewer services to the area. Our teams assisted in the design of the utility extension for both phases, where 23,000 LF of 8 inch gravity sewer was extended and 21,000 LF of 6 through 12 inch water line was replaced in Phase 1, and 7,500 LF of 8 inch gravity sewer and 5,000 LF of 6 inch water line were extended in Phase 2. Since the project areas were provided water services through Asbestos Cement (AC) water lines, the project also involved abandoning these waterlines in place (pressure granted) and replacing them with new Ductile Iron water lines. The project was located in a well established neighborhood built in the 1970’s which made design and installation of the new utilities even more challenging as priority was placed on minimizing any impacts to its residents.
Piney Green Road Trunk Sewer - Onslow Sewer and Water Authority
Close coordination with NCDOT led to cost savings for all parties
Having recently come to an agreement with the City of Jacksonville, NC to share the costs and ownership of Phase III of the Piney Green Sewer project, ONWASA determined that the NCDOT Piney Green road-widening project presented an opportunity to economically construct roughly 23,000 feet of trunk sewer along Piney Green Road as a part of the DOT project. The project required coordination with DOT construction and our team provided the preliminary engineering, design, permitting, easement surveys and acquisition and bidding services for ONWASA’s portion of the project. Design plans called for the installation of a combination of gravity sewer and force main as the project also prepared for future increased needs by setting up an initial duplex station with odor control that had the ability to expand from 1000 to 2100 gpm. After the design phase was completed, we performed construction contract administration and construction observation as the contractor utilized horizontal drilling to overcome several creeks. While the entire line, pump station and odor control project was designed by our teams, a portion of the line was constructed by the DOT as a part of U-3810 road widening, requiring that our construction observers worked together with NCDOT and that all work constructed by NCDOT was designed to their standards and bid as part of the U-3810 project.
Terrington Pump Station and Force Main - Cary, North Carolina
Anticipating impacts kept this service extension efficient and economical
The Town of Cary, NC needed to provide sewer service to a new area within its town limits, which would involve a new 225 GPM pump station, force main and gravity sewer, grinding/screening unit, pump and wetwell, odor control system, primary and backup power system, pump control and phone service. After analyzing alternative and comparing for cost of construction, easement acquisition, capacity impacts and downstream sewer and head conditions, our sewerline specialists provided design services that guided flow from the new station into the existing gravity collection system. As an additional benefit, the pump station now also has the ability to increase capacity to 300 GPM in the future.
Water Distribution System and Elevated Tank - Granite Falls, North Carolina
Creatively funding new infrastructure led more than 50 new jobs
A water system analysis for the Town of Granite Falls found that additional elevated storage capacity was needed in the southeast quadrant of the distribution system. With the possibility of industrial and commercial development in this area, the Town of Granite Falls looked to our team to design waterline extensions as well as a 1.0 MG elevated tank. Using the creation of new jobs as leverage, our funding specialists assisted the Town and the local Council of Governments in securing over $2,300,000 in grant funds from various agencies that included Golden Leaf, the Appalachian Regional Commission, US Department of Commerce and others, prior to kicking off the project's engineering design. In addition to the design, we provided contract administration, construction observation and grant administration services for the $3 million improvements, ultimately bringing more than 50 new jobs to the area.