The main components of construction include:• Installation of a new steel cap on the existing First Narrows South Shaft;• Construction of one deep vertical shaft to support tunnel excavation and two deep vertical shafts with enlargements for valve chamber construction;• Excavation of a 1.4 km long tunnel using a roadheader;• Installation of large diameter steel water mains;• Installation of above and below grade bypass piping;• Construction of two underground valve chambers;• Construction of a backup power building;• Construction of three underground flow meter chambers;• Installation of a smaller diameter HDPE pipe sliplined within the existing Capilano Main No. 4; and• Regrading of each construction area and hardscape restoration components.• Ancillary works to support construction (road work, pedestrian ramps etc.);