Licence conditions for pollution studies and reduction program


  

Licence conditions for pollution studies and reduction programs

Summary
 
Licence number: 2647
Title: Pollution Reduction Program 7 - Wyong South and Charmhaven Effluent Ponds Transfer Pump Upgrades
Start date: 30 Jul 2021
 
Licence Condition
Background The licensee notified the EPA of overtopping events at the Wyong South STP Wet Weather Storage Pond in 2020 and in 2021 due to rainfall events. The licensee notified the EPA of an uncontrolled discharge from the Charmhaven Wet Weather Storage Pond in 2021 due to a rainfall event. The licensee has advised the EPA of difficulties in drawing down both ponds prior to and following rainfall events due to the current capacity of effluent transfer pumps at both Wyong South and Charmhaven STPs. The current pump capacities at both plants compromises the licensee's ability to efficiently draw down pond volumes in a timely manner prior to and following rainfall events. Deliverables The licensee must provide a report to the EPA that details proposed effluent pump capacity upgrades for both the Wyong South Wet Weather Storage Pond and the Charmhaven Balance Pond to the Toukley STP prior to discharge to the Norah Head Ocean Outfall. The report must include but need not be limited to the following: A review of current effluent transfer pump capacity for both Charmhaven and Wyong South storage ponds to the Toukley STP. A discussion and justification for proposed effluent transfer pump upgrades, flow rates and capacities for both Charmhaven and Wyong South STPs considering future predicted flows to each plant. A full scope of works for the proposed upgrades including indicative costings, commencement and project completion timeframes.The report must be provided to the EPA's Director - Metropolitan North by no later than 5pm 30 December 2022.