DC Water Final Dewatering Facility


Washington, D.C.


Civil Engineering

Project Size

22,400 SF

Completion Date


Total Cost

$78 Million


CH2M Hill

Wiles Mensch Corporation – DC (WM) provided civil engineering services for the construction of a new Final Dewatering Facility for DC Water as a part of its biosolids management program. Located at the Advanced Wastewater Treatment Plant at Blue Plains, the facility required modification of the existing biosolids facility and addition of new facilities to dewater biosolids from new thermal hydrolysis and anaerobic digestion.

Completion of the new facility required building demolitions, excavation, shoring and embankment construction, and installation of extensive conveying equipment, piping and ductwork. WM provided design services, construction document review and approval, and prepared documents including an O&M manual, Commissioning Plan, schedule, equipment and system reviews, Quality Control checklists, testing and calibration reviews, and Operational Demonstration reports for the project.

WM identified and investigated all applicable regulations in order to obtain all permits. Permit approval required coordination with the Department of Consumer and Regulatory Affairs, Commission of Fine Arts, Historic Preservation Office, DOEE, and additional zoning agencies.

Photos courtesy of: DC Water

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