W912DR20B0020.pdf

This solicitation is for maintenance services at two clearwell water treatment facilities located in Dalecarlia, Washington D.C. The Washington Aqueduct seeks upgrades and improvements to the 15 million gallon and 30 million gallon clearwells and their connecting conduits. Work includes upgrading drain lines to eliminate cross connections, rehabilitating and replacing large sluice gates, installing new flow meters and induction mixers, improving the clearwell overflow structure, rerouting chemical analyzer drain pipes, and improving soil drainage. Mold remediation and HVAC upgrades are also required in a building near the 15 million gallon clearwell. Both clearwells are critical infrastructure, so outages must be coordinated with lower seasonal demand and sequenced so only one clearwell is out of service at a time. The soliciting agency is the U.S. Army Corps of Engineers, Baltimore District.