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Arlington Water Pollution Control Plant Phase 7B

Arlington, Virginia

Performing a major wastewater treatment plant expansion on an extremely tight site



Key Services




40 MGD

The challenge

Upgrading Arlington County’s water pollution control plant to meet the Environmental Protection Agency’s Chesapeake Bay pollutant reduction requirements posed a complex challenge. The plant’s capacity was being expanded from 30 MGD to 40 MGD, and Alberici was faced with executing construction on a confined site near a residential area while ensuring seamless operations throughout the project.

Key Facts

Engineering Excellence Award Winner – American Council of Engineering Companies of Virginia

1 million+ safe work hours

$29 million cost savings

21 percent usage of recycled materials

6-month schedule savings

Challenge met

Alberici’s innovative approach combined engineering excellence and collaborative value engineering to overcome the challenges. The project encompassed multiple critical components, including new clarifiers, aeration basins, and pump stations. Facing budget constraints, Alberici engaged in a productive partnership with the owner and identified over $29 million in cost savings while reducing the program schedule by six months.

The project’s proximity to a residential zone and Reagan National Airport required precision and noise control. Alberici’s pre-assembly offsite mitigated these challenges and minimized on-site disruptions. Seamless logistics and just-in-time material deliveries were ensured through meticulous coordination. Alberici’s expertise, adaptive strategies, and commitment to innovation led to the successful completion of this essential environmental initiative.

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