3.37 To be specified by the Tenderer (if any) Pipeworks outside structures and below floors of buildings 3.38 Discharge pipeline between outlet flowmeter chamber to outfall  structure 3.39 Pipeworks inside WWTP site boundary 3.40 Air piping system 3.41 Potable water system 3.42 Pipewater treated effluent system for reuse 3.43 Fire-fighting system, including hydrants 3.44 Wastewater drainage system 3.45 Surface water drainage system - Total for Schedule No 3 (to be carried forward to Schedule No 1)