RFT2024-15 EFFLUENT POND LINING KOORINGAL AND NARRUNT SEWAGE TREATEMENT WORKS

Summary and scope

WWCC operates the Narrung Street STP, which includes primary, secondary and tertiary treatment of the wastewater before discharging to waterways and or recycling it. The original ESP project intended to design and build a front-end storage pond to enable inflow/infiltration flow rates above the STP’s (SBR) design envelope that is being received into the STP from the sewer reticulation system during times of flood and/or storm events to be diverted and stored in the ESP up to a volume of 20ML for subsequent withdrawal and treatment immediately after a diversion into the ESP has ceased. WWCC requires the installation of an impervious HDPE liner to the pond with gas venting and anchoring including undertaking of substantial earthworks, including excavation and disposal, grading, levelling and trimming: soil conditioning including dewatering if necessary: compaction: dust control: stockpile shaping and management; and reinstatement. A traffic management plan must be developed and implemented for the project by the contractor.