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Client: Arlington County
Location: Arlington, Virginia, United States
Project Type: Wastewater Treatment Facility
Contract Amount: $238,000,000 USD
Delivery Method: General Contracting
Project Size: N/A
Start Date: September 2006
Estimated Completion Date: September 2010
Architect/Engineer: Malcolm Pirnie
Participating Alberici Enterprises
Markets Served
Arlington Water Pollution Control Plant Phase 7B
Upgrade and expansion of Arlington County’s existing facility’s biological treatment capacity from 30MGD to 90 MGD Peak as part of the EPA's consent decree to reduce the amount of nitrogen and phosphorus entering the Chesapeake Bay. The plant was originally constructed in 1937. This major upgrade to the existing facilities will include the following significant elements:
- Major Demolition of existing lime handling facilities.
- New Construction - Three 140 foot diameter Secondary Clarifiers, Two New Advanced Aeration Tanks, Three pump stations, preliminary treatment bypass facility, Two mixed liquor distribution structures, primary effluent channel, 9500 l.f. perimeter fence.
- Upgrades - Six secondary clarifiers, six primary clarifiers, operation controls building, blower building, one pump station, backwash waste tanks, electrical distribution centers, security, control and data acquisition, chemical feed system all while maintaining plant operations.
This brownfield project is located inside the Washington, D.C. I-495 beltway and adjacent to a residential neighborhood. The plant is the primary treatment facility for Arlington County and it also serves adjacent jurisdictions including the Pentagon.ACI is working collaboratively with the Owner and Design Team through complex issues including significant Value Engineering alternatives initiated by ACI and schedule leveling while maintaining plant operations. With other major ongoing work at the facility, Alberici has been a team player, performing precise and extensive coordination to enable all projects to be successful.