Water Efficiency

Gannett Fleming’s Innovative Water Solution Wins Outstanding Project Award for Maryland American Water’s Bel Air Impoundment

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March 6, 2019 (Harrisburg, Pa.) The American Council of Engineering Companies Maryland presented Gannett Fleming with an Outstanding Project Award for Maryland American Water’s Bel Air Impoundment project during the 2019 Excellence in Engineering Awards on Feb. 21.

The Bel Air Impoundment is the largest dam project in Maryland in 30 years and sets new standards for the design of water storage reservoirs. Securing a reliable water supply for more than 14,000 residents, the new system features a 62-foot-high earthen embankment with a 20-foot-wide crest and can store up to 90 million gallons of raw water.

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“The engineering and construction management services provided by Gannett Fleming were critical to the overall success of the impoundment project,” said Barry Suits, Maryland American Water president. “This project represented a true partnership between Maryland American Water, local and state officials, and Gannett Fleming to create a safe, reliable water supply solution for our customers that serves as a model for water sustainability.”

Winters Run, the river that runs through Harford County and the main source of water for Bel Air, does not provide an adequate water supply during times of drought as required by the Maryland Department of the Environment. For more than 20 years, Maryland American Water purchased additional water as needed from Harford County, but the county’s water supply was never a viable, long-term solution.

The raw water impoundment fills with water from Winters Run when stream flows are adequate and provides an essential back-up water supply for the Bel Air community when there is a need for a secondary supply. Now in service, the impoundment can provide approximately one million gallons per day of additional water supply.

The Gannett Fleming design team selected a bituminous geomembrane (BGM) liner to create a watertight barrier along the 2,025-foot-long dam embankment and impoundment floor. The Bel Air Impoundment project marks only the second time a company used a BGM liner to cover a dam embankment in the U.S. The BGM liner enabled the use of an exposed liner system, eliminating the need for soil cover, which reduced construction costs by an estimated $450,000.

The facility uses leading-edge, sustainable, water-quality improvement systems to clean stored water before it flows to the treatment plant, boosting the plant’s efficiency, increasing the service life of treatment filters, and enhancing drinking water taste and odor. The standard method of improving raw water involves the use of chemicals, which requires careful monitoring and can kill fish and other wildlife through over application. Natural systems eliminate fish kills and reduce chemical usage and related costs by an estimated 20 percent.

Completed seven weeks ahead of schedule, the Bel Air Impoundment project serves as a model of innovative water infrastructure design, while creating a sustainable water supply to meet community needs—now and in the future.

Gannett Fleming is a global infrastructure and engineering firm that provides progressive solutions for transportation, earth sciences and natural resources, geospatial, water, power, and facilities projects. Founded in 1915, our experience spans 65 countries and thousands of successful projects. Our 2,400 employees deliver excellence in planning, design, technology, and construction management from more than 60 offices around the world. We consistently rank among the industry’s top design firms and embrace sustainability, innovation, and advanced solutions to solve our clients’ complex challenges and improve the communities they serve. We are ISO 9001:2015 Certified, which assures clients that we meet the most rigorous and independently audited quality standards. Gannett Fleming achieved $483 million in revenues in 2018. For more information, visit www.gannettfleming.com

Maryland American Water, a subsidiary of American Water (NYSE: AWK), provides high-quality and reliable water services to approximately 14,200 people. With a history dating back to 1886, American Water is the largest and most geographically diverse U.S. publicly traded water and wastewater utility company. The company employs more than 7,100 dedicated professionals who provide regulated and market-based drinking water, wastewater and other related services to an estimated 14 million people in 45 states and Ontario, Canada. American Water provides safe, clean, affordable and reliable water services to our customers to make sure we keep their lives flowing.
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