Tomago Clear Water Tank and Water Pump Station

Overview Hunter Water Corporation is inviting Expressions of Interest (EOI) for the Tomago Clear Water Tank and Water Pump Station works, spanning the Grahamstown WTP and Tomago Facility sites. Purpose The purpose of this EOI is to shortlist participants who will be invited to tender for the design and construction package for the work. Scope The main physical scope items include: New Grahamstown 2 Clear Water Tank (CWT2) New Tomago 2 Water Pump Station (TPS2) Transmission pipeline from the existing weir pit to CWT2 Transmission pipeline from CWT2 to TPS2 and the existing Tomago 1 Water Pump Station (TPS1) Transmission pipeline from TPS2 to the potable water network Primary chlorine (assist) dosing from the Tomago Chlorinator Secondary chlorine dosing from the Tomago Chlorinator Mechanical appurtenances to support the required controls, monitoring, and scouring Dividing wall inside the existing weir pit and associated access platforming High voltage (HV) power supply, including new HV feeders and a transformer yard at TPS2 Low voltage power supply and communications network Planned shutdown and condition assessment of the Grahamstown 1 Clear Water Tank (CWT1) Planned shutdown and condition assessment of the CWT1 to TPS1 transmission pipeline Planned shutdown and condition assessment of the TPS1 suction and delivery pipework (headers and manifolds) Provisional works: CWT1 concrete repairs and joint replacement Provisional works: CWT1 inlet baffle replacement and inlet and outlet isolation valves replacement Provisional works: relining of the CWT1 to TPS1 transfer pipeline Provisional works: upgrade of the TPS1 suction and delivery pipework Relocation of existing buried services Decommissioning and removal of existing pipework Decommissioning of the CWT1 bypass Decommissioning and demolition of redundant Tomago mains chlorine dosing lines