NIH awarded Reliance a contract to correct plumbing deficiencies in Bldg 101, Modules C, D, and E. The work involved replacing the heat recovery coil condensate traps for exhaust fans in C, D, and E Penthouses (EF‐DD‐C‐L‐1, EF‐DD‐C‐L‐2, EF‐DD‐D‐L‐1, EF‐DD‐D‐L‐2, EF‐DD‐E‐L‐1, and EF‐DD‐E‐L‐2). Each exhaust fan consisted of 10 heat recovery coils and 10 condensate traps, for a total of 60 condensate traps for the project. The work also involved replacing select gate valves in the Bldg 101, Module D, basement interstitial space with ball valves. The valves isolate water to multiple systems.