Pride Plumbing came out and demoed the following: a wash sink located in a corridor, 2 toilets, 2 bathroom sink lavatories, a darkroom floor drain, a darkroom sink, a water heater, and a service sink. We then 1) cut and removed a section of concrete floor, connected the drain line from the service sink to the existing drain line in the floor, and connected the sink's vent line to the existing vent line going into the ceiling; 2) replumbed the water lines at the water heater that we took out into the building's existing water supply lines; 3) capped off the water supply and drain lines that were no longer being used; and 4) insulated all the water supply lines in the ceiling.