INCIDENT MANAGEMENT

Lake Eppalock Flooding

In October 2022, major flooding was predicted for the Coliban and Campaspe Regions. Flood models indicated a very high risk to the Eppalock Pump Station. Veolia and the Joint Venture implemented the flood response plan to minimise damage and risk to the assets.This included the following activities:

● Relocation of motors 5 & 6 from Epplack to theAxe Creek Pump Station

● Motor 7 was disconnected and raised 600mm above the 2011 flood level, as it was not possible to safely remove it from the site

● Isolation of the power supply to the site

The flooding occurred onThursday 13th of October 2022, and substantially exceeded the January 2011 flood event, with the final flood level approximately 2.5 metres above the upper floor level. (The January 2011 flood level was approximately 600mm above the upper floor level)

The flood resulted in total flooding of the Eppalock pump station and associated equipment, including the HV switch room and associated equipment, the 22 kVa transformer and associated equipment and partial flooding of the incoming HV RMU

The GSPJV made a decision to handover the site to the Veolia GSPteam to manage and implement the flood recovery work, including management of the flood damage insurance claim. Major actions to date include:

● Prioritisation of the dewatering and cleaning the building and salvageable equipment

● Engaged Styles Power Solutions to restore partial power to the site to allow the commencement of testing, repairing and replacement of electrical equipment at the site

● NHP/Rockwell engaged to carry out VSD inspections

● CJ Pearce Pty Ltd engaged to inspect, clean and assess theTamco HV switchgear

● Site inspections by CHW insurance assessors and forensic engineer

● HV inspections of the HV RMU and incoming HV kiosk