Licence conditions for pollution studies and reduction program


  

Licence conditions for pollution studies and reduction programs

Summary
 
Licence number: 2647
Title: Pollution Reduction Study 5 - Investigation into Inundation of Sewage Infrastructure in Wyong South STP Reticulation System
Start date: 30 Jul 2021
 
Licence Condition
Background The EPA is aware that during significant rainfall events that a number of sewage pump stations in low lying areas of the Wyong South STP reticulation system became inundated causing issues with system performance and inflows to the STP. The EPA understand that in some instances the pump stations remained inundated for a number of days. The EPA further understand that increased inflows into the Wyong South STP reticulation system are also due to low lying property overflow relief gullies as well as from illegal stormwater connections and leaking Council assets. Deliverables The licensee must conduct a study and prepare a report into all sewage pump stations within the low lying areas of the Wyong South reticulation system that have became inundated in significant rainfall events and also investigate low lying property overflow relief gullies, illegal stormwater connections and leaking Council assets and provide a report to the EPA providing but not limited to the following details: A map showing and describing the relevant sewage pump stations that the licensee has identified as a risk of inundation during rainfall events. A list of all low lying property overflow relief gullies, illegal stormwater connections (where known) and any leaking Council assets. The height in AHD of the identified sewage pump stations against recent floodwater heights (also denoted in AHD). A risk based assessment detailing priority remedial works of all identified sewage pump stations prone to inundation during rainfall events in the Wyong South reticulation system. A risk based assessment detailing priority remedial works to address low lying property overflow relief gullies, illegal stormwater connections and leaking Council assets. A scope of works including commencement and completion timelines for all identified remedial works identified in the risk based assessment of identified sewage pump stations, illegal stormwater connections, low lying property overflow relief gullies and leaking Council assets.It is the EPA's intention to formalise remedial or upgrade works identified as part of this study as Pollution Reduction Programs on this licence. The licensee must provide the report to the EPA's Director - Metropolitan North by no later than 5pm on 30 June 2023.