Ashland Storage Basin Replacement (CO)

To solve water loss issues and reduce operation and maintenance costs, Denver Water solicited the services of a construction manager at-risk (CMAR) to remove and replace the existing Ashland Storage Basin Facility, located in the historic Highlands neighborhood, which was originally constructed in the 1890s as an open-air reservoir with earthen bottoms.

North Lee County Water Treatment Plant Rehabilitation and Expansion

Using the progressive design-build delivery method provided $1.6 million in value engineering savings. Carollo’s design for the project reduced operating costs for Lee County Utilities by as much as $784,000 per year. This project was substantially completed on schedule and was awarded the 2012 Florida Section Design- Build Institute of America (DBIA) Award for water/wastewater projects.

Westerly Wastewater Treatment Plant Centrifuge Replacement (OH)

NEORSD’s decision to use progressive design-build (PDB) project delivery was based on the need to move more quickly, save money, and promote collaboration – resulting in a better approach than possible with traditional design-bid-build (DBB). PDB also gave NEORSD full insight into the cost of the work to be done throughout the project.

Decatur Wastewater Treatment Plant MBR Expansion (AR)

In 2014 the city of Centerton began experiencing an unexpected growth spurt, almost doubling its size, forcing the City of Decatur to research wastewater treatment plant expansion options to accommodate the population growth.

Edward W. Bailey Water Treatment Plant (CO)

McCarthy Building Companies and Carollo Engineers partnered on the Edward W. Bailey Water Treatment Plant and brought forth a unique approach to the project. The original project plan called for a campus style layout. The McCarthy/ Carollo team developed a plan that would consolidate the treatment structures and limit the plant’s exposure to the
poor soil conditions.

Capital Regional District Wastewater Treatment Program (Canada)

RIRRC Leachate Pretreatment Facility (RI)

The RIRRC, which handles most of Rhode Island’s municipal waste and recycling from neighboring cities and towns, needed to design and build a 0.650-mgd treament plant to comply with projected changes in the discharge standards for the disposal of wastewater, including leachate, into the public sewer system.

Dodd Water Treatment Plant Upgrades

The partnership between Burns & McDonnell, Garney Construction, and the District during all aspects of design and construction was vital to this project’s success. The accelerated project schedule would not have been possible without using a design-build approach. This type of partnership allowed for flexibility and more collaboration than a traditional approach.

Northeast Water Purification Plant Expansion (TX)

Mystic Water Pollution Control Facility (CT)

In recent years, the town of Stonington’s wastewater infrastructure had begun to show its age. Odor-control issues and adverse press reporting, as well as state regulations on nitrogen levels in effluent and the rate of commercial and community growth all placed strain on the town’s Mystic, Borough, and Pawcatuck water pollution control facilities. Since they were located near residential, commercial, and cultural sites, there was no available real estate to expand or build a new facility.

Lawton Valley Water Treatment Plant (RI)

Under a consent order to address challenges stemming from its nine surface water reservoirs, Newport, Rhode Island, needed to upgrade the existing Station No. 1 Water Treatment Plant, improve its process train, and demolish the 1940s-era water treatment plant at the Lawton Valley site and replace it with a new one.

Berthoud Regional Wastewater Treatment Plant (CO)

With the planned development of the eastern area of Berthoud, CO, particularly a major complex serving the trucking industry, a new east-side wastewater treatment facility would be necessary to sustain the planned growth of the city east of the existing service area. As a result, Berthoud officials made the decision to build a new wastewater treatment plant under an expedited schedule.