Specifications include, but are not limited to: Remove drywall to access waterline app 50 sf. Remove & replace 4" galvanized steel cold water line and associated valves (3), flanges, etc., inside the building from main cold water valve to back-flow preventer, and the fire sprinkler main valve app 95 lf. Remove & re-install into existing locations, the back-flow preventer and fire sprinkler main valve, pressure reducing valve replacing gauges to pressure reducing valve and associated lines. Remove & replace 4" galvanized steel cold water line from back flow preventer to the tee fitting by the tunnel, app 30 lf. Remove & replace 3" galvanized steel water line, with new copper pipe frm tee fitting, then through the tunnel, app 45 lf. Replace 3" valve, including all necessary flanges, fittings, etc. Remove & replace 3" galvanized steel water line with copper pipe from tee fitting above the water heater, to the boiler feed, then to the elevator app 60 lf. Insulate all replaced cold water line and valves. Remove & replace damaged drain trap and 18" section of drain pipe, to janitor's sink above 4" cold water main to be replaced. Flush & disinfect water system as required and have water tested to determine potability. Test system for proper operation. Replace missing insulation to air duct. Replace 2" galvanized steel pressure drain pipework, including valves, check valves from the union connection near the sump pumps to existing 3" cat iron pressure drain near door, app 35 lf. Install new plywood cover to void/chase area. Restore site to a pre-construction condition.