A key element of Councils role in emergency prevention and mitigation relates to the identification of potential and man-made hazards within the municipality and plans for their mitigation and management. The principal mechanism for undertaking this hazard identification is through the CERA process.
The CERA process developed by VicSES, provides the MEMPC with a framework for considering and improving the safety and resilience of the community from hazards and emergencies.
The CERA approach aims to understand the likely impacts of a range of emergency scenarios upon community assets, values and functions. As such, CERA provides an opportunity for multiple community impacts and consequences to be considered enabling collaborative risk treatment plans and emergency preparedness measures to be described.
The outputs of the assessment process can be used to inform emergency management planning, introduce risk action plans and ensure that communities are aware of and better informed about hazards and the associated emergency risks that may affect them.
The CERA process has evolved from the Community Emergency Risk Management (CERM) process. The CERM process has been used in the development of previous iterations of the Colac Otway Municipal Emergency Management Plan. CERA is consistent with ISO 3100:2009 Risk Management Principles and Guidelines. It has been developed to align to the National Emergency Risk Assessment Guidelines(NERAG). Further information can be found at http://ses.vic.gov.au
The Colac Otway Shire MEMPC is currently in a transition phase from the CERM to the CERA and this section of the MEMP and Appendix 7 Community Emergency Risk Assessment Plan will be updated accordingly once the transition is complete.
The CERA process comprises a five step framework which includes Risk Assessment and Risk Treatment and has replaced the CERM Plan.
The CERA process underpins the MEMP by providing a mechanism for the identification of hazards, the determination of risk associated with those hazards and how those risks are to be managed. The CERA process aims to reduce the incidence and impact of risks within the Colac Otway Shire community by identifying the risks that the community may face, assessing the vulnerability of those at risk and providing options, treatments and/or elimination of the risks.
It is acknowledged that some risks will span municipal boundaries. In these instances treatments will be developed in collaboration with adjoining municipalities.
Step 1 Establish the Content
Step 2 Identify Emergency Risks
Step 3 Analyse Emergency Risks
Step 4 Evaluate Emergency Risks
Step 5 Treat Emergency Risks
Given the combination of the municipalitys geomorphology, history of natural disasters and the socio-demographic trends in its communities, the Colac Otway Shire potentially faces significant issues in the event of a natural or man-made disaster. The following maps provide a pictorial view of some of the risks faced by Colac Otway Shire.
Figure 19 Priority Waterways and 1 in 100 Year Flood Mapping (click on map to open within interactive portal)
Source: EXTENT_200Y_ARI Department of Environment and Primary Industries 18/10/2013
Figure 20 Identified Landslide and Erosion Potential (click on map to open within interactive portal)
Source: Erosion; Landslides COS/ Fed University (previously Ballarat University) - 2008 Residual risk ratings for identified hazards are listed in the table below:
Figure 21 - CERA hazard residual risk rating table
Source: CERA Assessment for Colac Otway Shire
A risk treatment schedule and plan is contained in the Community Emergency Risk Assessment. This schedule and plan is provided in Appendix 9 Community Emergency Risk Assessment-
The progress of implemented treatment options is monitored by the MEMPC through reports provided by the MERO and responsible agencies at MEMPC meetings.
Figure 22 CERA heat map
Source: CERA Assessment for Colac Otway Shire
The emergency risk management process is subject to minor reviews lead by VicSES annually in June and will undergo a major review at least once every three years, between audits. The progress of implemented treatment options is monitored by the MEMPC through reports provided by the MERO and responsible agencies at MEMPC meetings and through the annual risk assessment process.
The cyclic review of the risk management process will result in a report provided to the MEMPC at its August meeting, identifying any adjustments required and will also be used by the committee to identify if any amendments or updates are required to the MEMP.
This process will be administered by the Executive Officer and if required, an updated draft plan will be presented to the MEMPC at the November meeting for endorsement.
Once the CERA is complete the MEMPC will make the output of the CERA process available on the Colac Otway Shire website for feedback and review from the community.
4.3 Hazard, Exposure, Vulnerability and Resilience