PROJECT

Gillette Regional Water Supply

Population growth related to the burgeoning energy industry led the City of Gillette to develop a new regional water source with partial funding from the state of Wyoming. We provided planning, program management, project management, design and construction-phase services for this large-scale collection of projects, the largest water initiative in Wyoming history.

The state’s population increased by 50% over a 10-year period. This program includes multiple infrastructure components for delivering water to the City of Gillette and across the region: transmission pipeline, pump station, water storage tank, well field expansion, distribution system modifications and a chlorination facility.

Our team provided overall program management, design, and comprehensive bid and construction phase services. These included a full-time resident project representative for construction observation, inspections, and coordination of work with the existing operating facility as well as adjacent pipeline contractors.  

Before beginning design, we provided hydraulic modeling and surge analysis of the entire water system to accurately determine storage requirements, waterline sizes, pressures, flows and overall water quality for the high water season and the winter season.

Water Supply & Transmission

The Madison Formation groundwater well field capacity was expanded by 14,000 gallons per minute. The transmission system includes 52 miles of 36- and 42-inch diameter pipeline, a 23.5 million-gallon-per-day (MGD) pump station, a 300,000-gallon storage tank, an on-site sodium hypochlorite disinfection facility, 5.9 miles of 18-inch waterline and a water blending facility.

Designs were provided for both allowable pipeline materials for the 42-inch waterline: steel and ductile iron. Pipeline permitting included the Wyoming Department of Transportation, Campbell County, Crook County, the U.S. Army Corps of Engineers, the Bureau of Land Management, Burlington Northern Santa Fe Railroad, the Bureau of Reclamation, the U.S. Fish and Wildlife Service, and environmental and cultural sections of the Wyoming Department of Environmental Quality. Right-of-way needs were determined and obtained for both permanent and temporary easements.

Client

City of Gillette

Location

Crook and Campbell Counties, Wyoming

Region

Northwest

Services

Land & Right-of-Way Management

Water & Wastewater Program Management

Pump Stations

Source Development & Groundwater Supply

Water Supply & Distribution

Municipal Water & Wastewater

Water Pipelines & Conveyance

Industry

Water

Water Supply & Transmission

The Madison Formation groundwater well field capacity was expanded by 14,000 gallons per minute. The transmission system includes 52 miles of 36- and 42-inch diameter pipeline, a 23.5 million-gallon-per-day (MGD) pump station, a 300,000-gallon storage tank, an on-site sodium hypochlorite disinfection facility, 5.9 miles of 18-inch waterline and a water blending facility.

Designs were provided for both allowable pipeline materials for the 42-inch waterline: steel and ductile iron. Pipeline permitting included the Wyoming Department of Transportation, Campbell County, Crook County, the U.S. Army Corps of Engineers, the Bureau of Land Management, Burlington Northern Santa Fe Railroad, the Bureau of Reclamation, the U.S. Fish and Wildlife Service, and environmental and cultural sections of the Wyoming Department of Environmental Quality. Right-of-way needs were determined and obtained for both permanent and temporary easements.

Case Study

Want to learn more about this project?

The City of Gillette Builds the Largest, State-Funded Water Project to Secure the City’s Supply

Pine Ridge Water Tank

This 300,000-gallon welded steel water storage tank satisfied the need for redundancy and service reliability. Earthwork evaluation for the design included grading, drainage, and stormwater mitigation. Design analysis featured improvements to tank overflows, soil evaluation, erosion control measures and new yard piping evaluations. Our team also coordinated with utilities, conducted surveys and designed foundations.

The project was phased to allow installation of the new storage tank during normal operation of the distribution system, minimizing shutdowns for interconnection. Ongoing facility operations required close coordination of the piping system tie-ins, testing, and disinfection of the new tank and associated piping.

Donkey Creek Pump Station

The new Donkey Creek pump station works in conjunction with the existing pump station, providing both redundancy and additional capacity. It includes seven canned vertical turbine pumps, each driven by a 450-horsepower (HP) motor and delivering a firm capacity of 23.5 MGD.

Our team handled all aspects of the design including pumping equipment, site civil, structural, architectural, plumbing, HVAC, electrical, instrumentation and control systems. The facility also included an overhead bridge crane and truck loading area to facilitate pump removal and shipping without leaving the building.