HOBSONS BAY CITY COUNCIL
STORMWATER HARVESTING PROJECTS
Final Report
February 2014
Hobsons Bay City Council Stormwater Harvesting Projects
FINAL REPORT INTENT
The purpose of this report is to outline all the procedures that have been implemented by all project parties during
the design of four schemes and construction of the three Hobsons Bay City Council Stormwater Harvesting
Projects.
The format of this report was maintained during the life of the project and used by way of reporting the project
progress in accordance with the funding agreement with the Australian Government. Progress reports were
submitted at predetermined intervals throughout the project. Hobsons Bay City Council has been responsible for
developing these reports with input from City West Water and various stakeholders involved.
Stakeholders involved in or associated with the project were requested to comply with the contents of the Project
Plan and to raise, for discussion, any issues, which they consider may result in necessary amendments,
amplifications or improvements to practices or procedures contained herein.
The aim of the project is:
To deliver the Hobsons Bay City Council Stormwater Harvesting Projects in accordance with the project
timelines, defined budget and desired quality, in order to satisfy Hobsons Bay City Council, Stakeholder
and Community intent.
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PROJECT OVERVIEW
Background
The prolonged drought and resultant water restrictions have generated an unprecedented interest in water issues
motivating the community to begin to value all forms of water in Victoria. The state government has released a
Living Melbourne, Living Victoria Roadmap which stated that stormwater and recycled water sources to be used
more widely at a localised level while optimize the use of larger infrastructure to combat Melbourne’s growing
population.
City West Water (CWW) is working with local government authorities to develop alternative servicing strategies for
their open spaces. In 2009 the CWW Water Innovation team in partnership with Hobsons Bay City Council (HBCC)
developed the Open Space Water Security Plan for 30 reserves across the City of Hobsons Bay. The report
included the identification and conceptual design of the most suitable water supply scheme for each of these
reserves. The water sources considered were; rainwater, stormwater, sewer mining, recycled water and industrial
water. The preferred source for each was compared in a multi criteria analysis (MCA) which included social and
current condition of the ovals from HBCC in addition to the technical, environmental and economic aspects.
Key Objectives
Utilisation of alternative water sources is a key aspect of the Victorian Government’s policies surrounding
sustainable usage of water resources and is a common thread throughout each policy since the 2004 Victorian
Government White Paper.
The Open Space Water Security Plan is consistent with four of Council’s key strategic objectives as defined in the
2009-2013 Council Plan which specifically include;

Community Wellbeing: By providing high quality services and amenity we improve the health, safety and
wellbeing of our community.

Environmental Sustainability: The Council and the community will work together to minimise our impact on
the environment of today and the future.

A Liveable City: Through appropriate planning we will achieve a sustainable balance between our natural
and built environment and maintain the village character of the municipality.

Arts Recreation and Culture: To foster and facilitate access to a multitude of art, recreation and cultural
pursuits across the city.
Key objectives for the Hobsons Bay Council stormwater harvesting projects are:



to identify and develop an alternative water scheme for the irrigation of sporting grounds
to reduce the demand on potable water supplies
to provide the most suitable alternative water source based on a multi criteria analysis that includes
economic environmental and social aspects
PROJECT RESULTS AND OUTCOME REALISATION
At the completion of the Hobsons Bay Stormwater Harvesting Project three new scheme’s have been established,
namely at Cyril Curtain Reserve, Williamstown, Merton Street Altona Meadows and Paisley Park, Altona North.
Initially Council intended to achieve five schemes in total however through the feasibility investigations it was
determined that both the J T Gray and Robertson Reserve Schemes were not viable. This supported the
understanding that the feasibility investigations are an imperative aspect of the projects that need to be undertaken
prior to any investment in detailed design development.
The three schemes are now operational and it is anticipated that the benefits of the schemes will be realised over
the coming years. It is estimated that these three schemes will save up to 184 ML/yr of potable water being used
for the purposes of sports ground and reserve irrigation. Each of the three schemes were designed to achieve a
minimum 80% reliability.
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Significant regular monitoring of the schemes will be undertaken over the first twelve months of operation to
ascertain capacities, demand volumes and functionality of the schemes. Throughout the design development
phase it was agreed that specific maintenance periods would be established for each of the schemes. These
maintenance periods are now active and this allows the landscaping to establish and be closely monitored in
accordance with the broader monitoring of the scheme itself. Given these three schemes are the first stormwater
harvesting schemes of this scale for the Hobsons Bay City Council, it is imperative that Council continue to monitor
and review to ascertain long-term the benefits and opportunities for further consideration.
MAJOR PROJECT ISSUES
Various challenges were discovered throughout the life of the project and these have been attributed to the
complexities embedded within the individual schemes. At the commencement of the project a detailed governance
structure was established and this provided the necessary guidance at times of considering major project issues.
Specific project issues identified throughout the life of the project included;
- Engineering solutions to site specific issues such as water flow management under the Merton Street
Railway underpass.
- Co-ordination of internal project consideration and approval processes with specific organisations capturing
multi-faceted aspects of the schemes. For example, Melbourne Water’s interest in the Laverton Scheme
was both from a river health and governance (approval) perspective however the challenge was the
transfer of consistent information and advice to ensure progress.
- Given this project was the first of its kind for Hobsons Bay City Council, the project has resulted in
significant additional ongoing asset management responsibilities that were not intended or identified early
in the life of the project. This has been a significant learning and will be considered in the development of
future projects.
PROJECT OVERVIEW
This project includes four stormwater harvesting schemes that are part of the overall Hobsons Bay Stormwater
Harvesting Project. The four schemes are detailed following:
1.1
Paisley Park, Altona
1.1.1
Project Name
The name of this project is the Paisley Park Stormwater Harvesting Project.
1.1.2
Project Scope
The purpose of this project was to develop an alternative water scheme to irrigate the existing sports grounds
within Paisley Park and S.J. Clement Reserve located in Altona. The sports grounds are managed by Hobsons
Bay City Council. An overview of the area is shown in Figure 1.
CWW in partnership with HBCC completed an alternative water assessment on 30 sports grounds within the City of
Hobsons Bay. Seventeen alternative water projects were identified within this report. Conceptual designs and a
multi criteria analysis (MCA) were completed for each project. Of these seventeen projects, Paisley Park
stormwater harvesting project was ranked third overall in the MCA analysis.
HBCC approached CWW to be a partner in the construction of the treated stormwater distribution network, and to
operate and maintain this as part of the scheme.
The main infrastructure of the project consisted of:
 water diversion system
 upgraded lake system for stormwater treatment and storage
 treated stormwater reticulation system
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Figure 1: Scheme Layout
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1.1.3
Project Objectives
In line with the key objectives included above and the variable nature of rainfall, current accepted practice for
stormwater harvesting yields were to achieve a minimum 80 per cent reliability of the system. This system was
designed and sized to take the full 86 ML/yr allowed under the water transfer agreement. If more water is
available, it is likely this will be utilised to improve the conditions of the facility.
1.1.4
Project Status
The Detailed Design was finalised in July 2012 and the Construction project was released for public tender on 8th
August 2012.
The Construction Contract was awarded to Total Eden Pty Ltd at the end of October 2012. Total Eden
commenced work on-site in November 2012. Practical completion of these contracted works was reached in July
2013.
Representatives from both City West Water and Hobsons Bay undertook hand-over and training by way of a three
step process commencing in June 2013. The first step was a meeting between the relevant parties to discuss the
project outcomes, roles and responsibilities, Environmental Management aspects including the establishment of
checklists for various staff involved in the ongoing maintenance and management of the various components within
each of the schemes. The second step was a site meeting to support the previous discussions and training. The
third step was an on-site meeting with relevant reserve tenants specifically this provided an opportunity for the
tenant clubs to understand what to do in the event of an issue, roles and responsibilities and the importance of the
Environmental Management aspects.
The Paisley Park Scheme is operational and while there were some minor issues with regard to the systems
connection with the reserves irrigation systems, both City West Water and Hobsons Bay City Council have worked
together to manage the issues and rectifications. Coincidently irrigation and sports ground upgrades to the Paisley
Park Soccer Fields were scheduled for late 2013 and this resulted in a need to revert to potable water for a limited
period. This change over was easily managed and the treated water system is now operational.
1.2
J.T. Gray Reserve, Williamstown North
1.2.1
Project Name
The name of this project is the J.T. Gray Reserve Stormwater Harvesting Project.
1.2.2
Project Scope
The original intention of this project was to develop an alternative water scheme to irrigate the existing sports
reserves including J.T. Gray Reserve and K.C White Reserve, in Williamstown North. Both J.T. Gray Reserve and
K.C. White Reserve are managed by Hobsons Bay City Council. An overview of the area is shown in Figure 2.
The volume of water required to maintain these open spaces to maintain playable surfaces, using the South
Australia Irrigation Code of Practice methodology, is estimated at 25 ML per annum. The proposed scheme
involved extracting stormwater from the Newport Workshop Main Drain via a wet well and pumps station and
reticulating this water to the various open spaces for irrigation.
The target stormwater drain drains a predominantly residential catchment with some light industrial areas. The
interception point was chosen to allow water to be extracted above the high tide level within the drain and in an
area with sufficient space to allow the construction and maintenance of the infrastructure. Water quality constraints
that were considered in developing options included salinity, pathogens and suspended solids.
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Figure 2: Scheme Layout
1.2.3
Project Objectives
In line with the key objectives included above and the variable nature of rainfall, current accepted practice for
stormwater harvesting yields were to achieve a minimum 80 per cent of the total demand. The system has been
designed and sized to meet on average 80 per cent of the total demand (25 ML/yr).
1.2.4
Project Status
The Draft Detailed Design was completed in June 2012. A review of the viability of the project based on the cost
estimate related to this design concluded that the project was no longer viable. As such the design drawings have
been finalised, but the project did not progress to the construction phase.
1.3
Laverton Recreation Reserve, Altona Meadows
1.3.1
Project Name
The name of this project is the Laverton Recreation Reserve Stormwater Harvesting Project.
1.3.2
Project Scope
The purpose of this project was to develop an alternative water scheme to irrigate six existing and three proposed
Hobsons Bay Council sports reserves located within Laverton Recreation Reserve in the suburb of Altona
Meadows. In addition to this the State Ball Centre which is located immediately to the north of the reserve was
included in the assessment. An overview of the area is shown in Figure 2.
CWW in partnership with HBCC completed an alternative water assessment on 30 sports grounds within the City of
Hobsons Bay. Seventeen alternative water projects were identified within this report. Conceptual designs and a
multi criteria analysis (MCA) were completed for each project. Of these seventeen projects Laverton Recreation
Reserve stormwater harvesting project, comprising of a wetland system capable of harvesting an average of 88.8
ML (meeting 80 per cent supply reliability) of treated stormwater per annum, was ranked second overall in the MCA
analysis.
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HBCC approached CWW to be a partner in the construction of the treated stormwater distribution network, and to
operate and maintain this as part of the scheme.
The main infrastructure of the project consisted of:
 stormwater diversion system
 wetland treatment and storage system
 treated stormwater reticulation system
Figure 3: Scheme Layout
1.3.3
Project Objectives
In line with the objectives included above and the variable nature of rainfall, current accepted practice for
stormwater harvesting yields was to achieve a minimum 80 per cent of the total demand. The system has been
designed and sized to meet on average 80 per cent of the total demand (85.2 ML/yr). If more water is available, it is
likely this will be utilised to improve the conditions of the facility.
1.3.4
Project Status
The Detailed Design was finalised in July 2012 and the Construction project was released for public tender on 29 th
August 2012.
All the external stakeholder approvals and internal approvals were obtained by the end of 2012 and the contract
was awarded to Watpac Civil and Mining (Vic) Pty Ltd on 18 December 2012. Practical completion of this scheme
was achieved on 31 January 2014. Following the practical completion the maintenance period for the landscaping
will continue for the coming two summer seasons. Council’s Parks Department will continue to maintain the
landscaping following this formal contracted maintenance period.
A requirement of the approval process for the Laverton Stormwater Harvesting in particular approval for use of the
Merton Street site was to undertake a Native Habitat Offset Requirement investigation including the establishment
of a management plan. This was completed with Council’s endorsement (in May 2013) and subsequently the
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necessary Crown approvals are being finalised. At the time of compiling the final report Council are yet to be
appointed Committee of Management of the site, however the relevant department has communicated that this
request has been forwarded to the Minister’s office for approval.
The opportunity to upgrade the culverts at the Merton Street Underpass as a component of this project (completely
funded separately by Council) has resulted in very positive outcomes not only for this scheme but also for the local
community. The history of flooding of this underpass due to the lack of capacity by the previous culverts was a
major barrier for the local community. Frequently Merton Street was inaccessible for vehicles, bicycles and
pedestrians because of this flooding. The improved culverts have increased the capacity to ensure water flows in
times of extreme rainfall therefore reducing the severity and frequency of flooding.
Representatives from both City West Water and Hobsons Bay undertook hand-over and training by way of a three
step process commencing in June 2013. The first step was a meeting between the relevant parties to discuss the
project outcomes, roles and responsibilities, Environmental Management aspects including the establishment of
checklists for various staff involved in the ongoing maintenance and management of the various components within
each of the schemes. The second step was a site meeting to support the previous discussions and training. The
third step was an on-site meeting with relevant reserve tenants (specifically this provided an opportunity for the
tenant clubs to understand what to do in the event of an issue, roles and responsibilities and the importance of the
Environmental Management aspects.
Laverton Scheme – Storage Pond Feb. 2014
Laverton Scheme – Wetlands Feb. 2014
1.4
Williamstown Cricket Ground, Williamstown
1.4.1
Project Name
The name of this project was the Williamstown Cricket Ground Stormwater Harvesting Project.
1.4.2
Project Scope
The purpose of this project is to develop an alternative water scheme to irrigate the Williamstown Cricket Ground
and the adjacent foreshore reserve, Cyril Curtain Reserve in Williamstown. Both the Williamstown Cricket Ground
and Cyril Curtain Reserve are crown land managed by Hobsons Bay City Council. Cyril Curtain Reserve is a
popular foreshore reserve frequented by pedestrians and cyclists. This reserve is also a popular off-leash dog
walking area. An overview of the area is shown in Figures 1 and 2 below. This scheme was designed to harvest
10ML/yr.
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CWW in partnership with HBCC completed an alternative water assessment on 30 sports grounds within the City of
Hobsons Bay. Seventeen alternative water projects were identified within this report. Conceptual designs and a
multi criteria analysis (MCA) were completed for each project.
HBCC constructed the project as part of a major redevelopment of the Williamstown Cricket Ground.
The main infrastructure of the project consisted of:
 water diversion system
 a wetland for stormwater treatment.
 a storage tank under the oval
 treated stormwater reticulation system
The catchment of 11 hectares of residential area currently drains into Port Phillip Bay via one outfall drain. This
outfall drain is intercepted into a Gross Pollutant Trap and diverted to a wetland for natural treatment. The wetland
water is drawn down after time by pumping it into a 1 Mega-litre underground tank within the Williamstown Cricket
Ground. As water is required for irrigation it will be treated by UV disinfection and particle filters prior to use in the
sprinkler system on the oval, spectator areas and Cyril Curtain Reserve.
The design development and construction of this scheme was partially funded by the Australian Government
through the National Urban Water and Desalination Plan in the Department of Sustainability, Water, Population and
Communities.
1.4.3
Project Status
The Cyril Curtain Reserve Wetlands scheme was completed in September 2013 and the reserve was reopened to
the public in January 2014 following establishment of the turf after the installation of the irrigation system and
hydro-seeding. The site is now under maintenance and management of Council’s Parks Department.
Figure 4: Catchment Area and WCG oval
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Figure 5: Wetland, Underground Storage Tank and Oval
Completed Cyril Curtain Reserve Wetlands which will service the Williamstown Cricket Ground Feb 2014
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2.0 PROJECT TIMELINES
2.1
Williamstown Cricket Ground
Process
Concept Design of Harvesting system
Detailed Design of Storage System
Construction of Underground Storage
Concept Design of Wetland
Public Consultation
Detailed Design of Wetland and Infrastructure
Approval for Wetland
Construction of Wetland and Infrastructure
Landscaping including irrigation and fencing
2.2
Start
April-11
Jan-12
Aug-12
Nov-12
Finish
Nov-11
Aug-12
Oct-12
Aug-13
Start
April-11
Jan-12
N/A
Finish
Nov-11
Nov-12
N/A
Start
April-11
Jan-12
Aug-12
Dec-12
Finish
Nov-11
Aug-12
Nov-12
Jan - 14
J.T Gray
Process
Site Investigation & Functional Design
Detailed Design
Construction
2.4
Finish
May-10
Sep-10
Oct-10
Nov-10
Mar-11
Jul-11
Aug-11
June-13
Jan 2014
Paisley Park
Process
Site Investigation & Functional Design
Detailed Design
Construction Tender Phase
Construction
2.3
Start
Nov-09
Jun-10
Sep-10
Jun-10
Aug-10
Mar-11
Jul-11
Aug-11
Sept 2013
Laverton Recreation Reserve
Process
Site Investigation & Functional Design
Detailed Design
Construction Tender Phase
Construction
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PROCESS AND METHODS
PROJECT BUDGET
3.1
Funding
The Hobsons Bay City Council Stormwater Harvesting Projects were to be partially funded by the Department of
Sustainability, Environment, Water, Population and Communities. The funding for the three continuing projects
totals $3,130,600.
3.2
Project Expenditure
Current Expenditure for the projects is as follows:
Laverton Scheme
At the time of compiling this final report the final contract and associated costs had not been confirmed by City
West Water and subsequently not confirmed with Council. It is estimated that variations are minimal and relate to
climate conditions during the construction period and unforeseen ground water issues which impacted construction.
The estimated construction contract cost for this scheme was $4,960,000. The total scheme cost including design
development is estimated to be $5,600,000.
Paisley Park Scheme
The final project cost for this project is $1,020,000 and this comprises design and construction.
JT Gray Scheme
Current project spend at the end of the design stage is $186,516. There is no further expenditure for this scheme.
Williamstown Cricket Ground
The final project cost for this project is $1,000,000 and this comprises design and construction. This scheme was
funded by the Australian Government and the Hobsons Bay City Council.
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PROJECT GOVERNANCE
4.1
Terms of Reference
The project governance model includes a range of project groups to ensure the ongoing development and
implementation of the project, regular and updated communications and endorsements when necessary.
The Project Groups were established to oversee and manage various aspects of the project.
different role and responsibility throughout the life of the project. All groups have disbanded
constructed and appropriate governance and management arrangements have been finalised.
the systems and evaluation of the project will be undertaken by Council to determine future
initiatives.
Each group has a
now that they are
Ongoing review of
similar projects or
Members of the Project Groups are expected to:



Represent their organisation by attending the meetings.
Undertake any required reading prior to attending the meetings.
To the extent possible, complete the actions which have been allocated to them within the agreed
timeframe.
Meeting administration:




Hobsons Bay City Council has administered meeting agendas, minutes and other necessary
documentation for the Project Coordination Group Meetings and Governance Group Meetings.
Council were responsible for booking venues for meetings of all groups.
Minutes were kept for all meetings as a record of all discussions, recommendations and decisions made by
the Groups.
The purpose of each of the meetings was broadly guided by the Hobsons Bay City Council Stormwater
Harvesting Projects Project Management Plan, as well as actions identified in the course of Group
meetings.
Commercial in Confidence
The members of the Project Control Group may be in receipt of confidential or sensitive information that should not
be disclosed without ensuring the prior agreement of the Project Control Group members, according to the
communication strategy agreed by the Project Control Group. Such information may include (but is not limited to):




Information that would be of direct financial disadvantage to any of the parties if made public;
Politically sensitive information that may impact negatively on the parties if made public;
Information that is still only partly formulated and may, if released, give a misleading view to the community
of what the parties are planning; and
Any information that would disadvantage any of the parties if made public.
Where a member of a Project Control Group proposes that information may be confidential or sensitive, they
should bring this to the attention of the group at the earliest possible convenience. It is acknowledged that
members of a Project Control Group may need to discuss any potential confidential or sensitive issues with their
line management or relevant authorising body before the information is released to any third parties.
4.2
Project Management Structure and Governance
A schematic representation of the Project Management structure is outlined below.
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Hobsons
Bay City
Council
CWW
Board
Establishment of
Memorandum of
Understanding
HBCC/CWW Joint
Steering Committee
Project Director
(HBCC)
Stakeholder
Group
HBCC Project
Manager
PCG
CWW Project
Team - Design
CWW – Project
Management Team
Consultants /
Contractors
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Project Management and delivery is managed as follows:
HBCC/CWW Joint Steering Committee – A joint steering committee was established with HBCC and CWW
representatives to facilitate project delivery and interface issues between the two organisations.
Project Director – The Project Director provided general project guidance and approvals for the Project Manager
to: engage consultants and contractors, manage tender processes, appoint approved suppliers, make decisions in
respect of the Project outcomes and generally represent HBCC.
Project Manager - The Project Manager co-ordinated other HBCC employees and consultants assisting in delivery
of the Project. Specific project reports were prepared monthly and submitted to the Project Director as well as
formal quarterly updates to the Board.
Contractors/Consultants – HBCC and CWW appointed contractors and consultants to complete detailed
investigations, designs and construction or infrastructure as appropriate for each recreational site. Other specialist
consultants were engaged as required. Both HBCC and CWW have considerable experience in the preparation
and assessment of technical documentation required for this project, gained through similar alternative water
infrastructure projects
4.3
Project Control Group
Hobsons Bay City Council Stormwater Harvesting Projects Project Control Group membership comprised of a core
membership of essential stakeholders plus members who participated in the process and Project Control Group
meetings on an ad hoc basis as required. The core membership consisted of the following members;
Hobsons Bay City Council Stormwater Harvesting Projects
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Core Member
Title
Organisation
Marg Scanlon
Manager Recreation and Community Facilities (Chair)
Hobsons Bay City Council
George Ioannou
Project Manager - Capital Works and Assets
Hobsons Bay City Council
Nigel Corby
Alternative Water Solutions Manager
City West Water
Kate Houlden
Project Delivery – Acting Manager, Stormwater
Harvesting
City West Water
The visiting membership may consist of, but is not limited to, the following members whom have been identified for
specific areas of expertise and knowledge;
Visiting Member
Title
Organisation
Dylan O’Keefe
Water Innovation – Engineer
City West Water
Nan Ben Cheng
Team Leader – Building and Parks Projects
Hobsons Bay City Council
Allan Breasley
Team Leader - Road & Drainage Projects
Hobsons Bay City Council
Martin Hartigan
Environmental and Sustainable Planning Co-ordinator
Hobsons Bay City Council
The role of the Project Control Group members was to:

Provide advice and sign off to external consultants and contractors to progress the design and construction of
the projects.

Represent the interests of their respective organisation; make decisions on behalf of that organisation or seek
approval to progress issues as required.

Communicate with the Project Steering Committee regarding discussions, recommendations and decisions of
the Project Control Group.

Provide strategic advice and information on matters relating to the design, construction of, and service delivery
of the Hobsons Bay City Council Stormwater Harvesting Projects.

To seek or support applications for funding to construct the proposed projects and associated operational costs
as required.
Meeting arrangements:

The Chair for the Project Control Group was Marg Scanlon who lead discussions, coordinated project
meetings, recommendations and actions.

The Project Control Group will met at a frequency of fortnightly during the design phase and then monthly or a
frequency as determined during the construction phase.
Decision making powers:

The Project Control Group made decisions by consensus and through discussion.
Where major decisions were to be taken, representatives of all organisations most immediately affected by the
development of the facility were present, unless prior agreement had been reached.
It was recognised that certain decisions, for example those requiring a significant commitment of resources,
finances or having a bearing on the operational environment of any of the organisations involved, required
ratification by the authorised governing body of those organisations befo re the Project Control Group could
proceed to take any action.
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4.4
Project Steering Committee
The Project Steering Committee membership included the following members;
Core Member
Title
Organisation
Marg Scanlon
Manager Recreation and Community Facilities
Hobsons Bay City Council
George Ioannou
Project Manager - Capital Works and Assets
Hobsons Bay City Council
Nigel Corby
Alternative Water Solutions Manager
City West Water
Nan Ben Cheng
Team Leader – Building and Parks Projects
Hobsons Bay City Council
Phillip McDonald
Director Works and Assets (retired in October
2013)
Hobsons Bay City Council
Jeff Herz
Manager Capital Works and Assets
Hobsons Bay City Council
Muthu
Muthukaruppan
Manager - Water Innovation
City West Water
Ahmet Hashim
Manager - Project Delivery
City West Water
Consulting Members
Title
Organisation
Kate Houlden
Project Delivery – Acting Manager, Stormwater
Harvesting
City West Water
Allan Breasley
Team Leader - Road & Drainage Projects
Hobsons Bay City Council
Martin Hartigan
Environmental and Sustainable Planning Coordinator
Hobsons Bay City Council
The role of the Project Steering Committee members was to:







Establish the guiding principles and vision for the operation of the project.
Coordinate management responsibilities between parties.
Represent the interests of their respective organisation; make decisions on behalf of that organisation or
seek approval to progress issues as required.
Communicate with the Project Control Group regarding discussions, recommendations and decisions of
the Project Steering Committee.
Provide strategic advice and direction on matters relating to the governance and management
arrangements.
Provide strategic advice and direction on matters relating to any acquisition, disposal or leasing of land and
facilities associated with the project.
Support applications for funding to construct the proposed facility and associated operational costs as
required.
Decision making powers:
The Project Steering Committee made decisions by consensus and through discussion.
It was recognised that certain decisions, for example those requiring a significant commitment of resources,
finances or having a bearing on the operational environment of any of the organisations involved required
ratification by the authorised governing body of those organisations before the Project Steering Committee could
proceed to take any action.
Project Construction Group
The Construction Group oversaw the construction aspects of the two schemes undertaken in partnership with City
West Water and comprises:
Principal: City West Water
Superintendent’s Representative: Kate Houlden 0407 389 959
Assisting: Shirley Ho
Stormwater Manager: Peter Nastasi
Auditors: David Van Viersen, Charlie Bugeja, Chris Biezen
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Paisley Park Scheme
Contractor: Total Eden Pty Ltd
Contractor’s Representative: Graeme Poole 0438 099 512
Estimator / QA: Jamie Hamilton
OHS: Sophie Katsabanis
Site Supervisor: Dale Knight
Civil Subcontractor: Entracon, Rob Davis
Electrical Subcontractor: GJR Electrics, Greg Russell
Laverton Scheme
Contractor: Watpak Pty. Ltd.
Contractor’s Representative: Theo Kotsiliris
Site Supervisor: Craig Draper
HBCC Representatives
Allan Breasley and George Ioannou
All project communications were confirmed through the Contractor and Superintendent’s representatives.
The role of the project construction group was to:

Provide advice and support to progress the design and construction of the projects.

Represent the interests of their respective organisation; make decisions on behalf of that organisation or seek
approval to progress issues as required.

Communicate with the PCG regarding discussions, recommendations and decisions of the Project Control
Group.

Provide technical and practical advice and information on matters relating to the design, construction of, and
service delivery of the Hobsons Bay City Council Stormwater Harvesting Projects.

Provide project administration support.
Meeting arrangements:

The Chair for the Project Control Group was Kate Houlden from CWW who lead discussions, coordinated
project meetings, recommendations and actions.

The Project Construction Group met fortnightly (unless otherwise determined) during the construction phase.
Decision making powers:

The Project Construction Group made decisions by consensus and through discussion.

Where major decisions were considered, representatives of all organisations most immediately affected by the
development of the facility were present, unless prior agreement had been reached.

Certain decisions, for example those requiring a significant commitment of resources, finances or having a
bearing on the operational environment of the organisations involved, needed ratification by the authorised
governing body of those organisations before the Project Construction Group could take any action.
4.4
Project Steering Committee
The Project Steering Committee membership included;
Core Member
Title
Organisation
Marg Scanlon
Manager Recreation and Community Facilities
Hobsons Bay City Council
George Ioannou
Project Manager - Capital Works and Assets
Hobsons Bay City Council
Nigel Corby
Alternative Water Solutions Manager
City West Water
Nan Ben Cheng
Team Leader – Building and Parks Projects
Hobsons Bay City Council
Phillip McDonald
Director Works and Assets (retired in October
2013)
Hobsons Bay City Council
Hobsons Bay City Council Stormwater Harvesting Projects
18
Jeff Herz
Manager Capital Works and Assets
Hobsons Bay City Council
Muthu
Muthukaruppan
Manager - Water Innovation
City West Water
Ahmet Hashim
Manager - Project Delivery
City West Water
Consulting Members
Title
Organisation
Peter Nastasi
Manager - Stormwater Harvesting Projects
City West Water
Kate Houlden
Project Delivery – Senior Engineer
City West Water
Allan Breasley
Team Leader - Road & Drainage Projects
Hobsons Bay City Council
Martin Hartigan
Environmental and Sustainable Planning Coordinator
Hobsons Bay City Council
The role of the Project Steering Committee (PCG) members was to:
Establish the guiding principles and vision for the operation of the project.
Coordinate management responsibilities between parties.
Represent the interests of their respective organisation; make decisions on behalf of that organisation or seek
approval to progress issues as required.
Communicate with the Project Control Group regarding discussions, recommendations and decisions of the Project
Steering Committee.
Provide strategic advice and direction on matters relating to the governance and management arrangements.
Provide strategic advice and direction on matters relating to any acquisition, disposal or leasing of land and
facilities associated with the project.
Support applications for funding to construct the proposed facility and associated operational costs as required.
Decision making powers:
The Project Steering Committee made decisions by consensus and through discussion.
It was recognised that certain decisions, for example those requiring a significant commitment of resources,
finances or having a bearing on the operational environment of any of the organisations involved required
ratification by the authorised governing body of those organisations before the Project Steering Committee could
proceed to take any action.
Meeting Update
In 2011 the Project Steering Group met on 22/2, 31/5, 23/8, and 29/11.
In 2012 the Project Steering Group met once on 28/2 acknowledging there were specific milestones (such as
endorsement of plans and construction tender process) that would require organisation endorsements. These
endorsements were managed through the Project Control Group and the relevant management endorsements.
The Project Steering Group agreed there was sufficient communication (meeting minutes, progress reports,
Council reports etc.) between the organisations and management regarding the progress of the project and no
need for additional meetings.
A Project Steering Committee meeting was held on 26/2/2013.
The Project Construction Groups for both the Laverton and Paisley Park Schemes met fortnightly. The Laverton
Scheme Construction Group commenced their fortnightly meetings on 23/1/2013 and the Paisley Park Scheme
Construction Group on 6 December 2012 following awarding of the construction contracts.
Council Officers responsible for the Cyril Curtain Wetlands met on a regular basis to discuss progress and project
management.
Event
The official completion of the schemes was acknowledged on Tuesday 29 April 2014 at a formal function to which
local dignitaries and media were invited.
Hobsons Bay City Council Stormwater Harvesting Projects
19
PROJECT DIRECTORY
5.1
Directory
Contact
Role
Organisation
Contact Details
Marg Scanlon
Manager Recreation
and Community
Facilities
Hobsons Bay
City Council
mscanlon@hobsonsbay.vic.gov.au
Ph. 9932 1149
Mob. 0428 258 932
George Ioannou
Project Manager Capital Works and
Assets
Hobsons Bay
City Council
gioannou@hobsonsbay.vic.gov.au
Tel. (03) 9932 1035
Mob.: 0409 859 540
Nigel Corby
Alternative Water
Solutions Manager
City West
Water
ncorby@citywestwater.com.au
Tel. 03 9313 8376
Mob. 0423 606 814
Kate Houlden
Acting Manager,
Stormwater
Harvesting Projects
City West
Water
khoulden@citywestwater.com.au
Tel. 03 9313 8294
Mob. 0407 389 959
Nan Ben Cheng
Team Leader,
Building and Parks
Projects
Hobsons Bay
City Council
nbencheng@hobsonsbay.vic.gov.au
Tel. 03 9932 1062
Allan Breasley
Team Leader - Road
& Drainage Projects
Hobsons Bay
City Council
abreasley@hobsonsbay.vic.gov.a
u
Phillip
McDonald
Director Works and
Assets (retired in
October 2013)
Hobsons Bay
City Council
pmcdonald@hobsonsbay.vic.gov.au
Tel. 03 9932 1190
Jeff Herz
Manager Capital
Works and Assets
Hobsons Bay
City Council
jherz@hobsonsbay.vic.gov.au
Tel. 03 9932 1100
Muthu
Muthukaruppan
Manager - Water
Innovation
City West
Water
mmuthukaruppan@citywestwater.co
m.au
Tel. 03 9313 8240
Mob. 0425 786 012
Ahmet Hashim
Manager Project
Delivery
City West
Water
AHashim@citywestwater.com.au
Tel. 9313 8244
Mob. 0411132645
Hobsons Bay City Council Stormwater Harvesting Projects
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RENEWABLE OR CARBON OFFSET STRATEGY
Based on sourcing the incremental electricity required to operate the Hobsons Bay City Council Stormwater
Harvesting Projects and distribution network from the Victorian Grid, the Project resulted a net increase in GHG
emissions, when electricity was sourced from coal powered stations.
To avoid these GHG emissions, CWW purchased accredited Green Power. An estimate of green power of an
incremental cost of $0.161 per kL above standard power. This cost was included in the final Project Costs.
The following initiatives were used wherever possible to avoid GHG emissions.
Source electricity from Melbourne Water’s biogas-electricity plant at the Western Treatment Plant.
Use photovoltaic (PV) solar panels to power stormwater harvesting assets such as pump stations, delivering a
resource conservation and greenhouse gas benefit.
Adoption of best-practice standards in design; and,
Material selection and construction methods selected to reduce lifecycle environmental impacts.
6.1 Comparison of energy consumption with alternative water supplies
The table below describes the energy consumption and green gas emissions (assuming standard grid power) of
the Hobsons Bay Stormwater Harvesting Project versus the Wonthaggi Desalination Plant.
The energy figures include operations of the respective treatment plants and the energy required to pump the
treated water to the usage area, i.e. for Wonthaggi. Wonthaggi Desalination Plant to Cardinia Reservoir and for the
City of Hobsons Bay Stormwater Harvesting Project the combined costs of each element for water diversion and
delivery.
At Peak Capacity, per kL
Variable
Hobsons Bay
Stormwater
Harvesting
Project
Wonthaggi Desal.
Difference
Energy consumption (kWh/kL)
2.45
5.256
2.806
GHG produced kg CO2-e/kL
3.0
6.3
3.3
The Hobsons Bay Stormwater Harvesting Project compares favourably with the Victorian desalination plant at
Wonthaggi with less 50% of the energy required, on a per kilolitre basis, due to zero energy treatment requirements
(wetlands and biofiltration) and a much shorter pumping distance.
The greenhouse gas calculations are based on conceptual design and electrical loading of the diversion and
irrigation pumps. It should be noted the calculations for Wonthaggi Desalination do not include the pumping energy
required to deliver water from Cardinia Reservoir to the customer.
In addition various landscaping considerations were factored into the project outcomes. By way of example
drought tolerant grasses will be introduced to the sporting ovals within these reserves. Surrounding the ovals and
within the reserve boundaries water sensitive urban design principles were applied ensuring where possible excess
treated water was used within nearby facilities. Vegetation species were native to the area but again those that are
drought tolerant. Specific reserve features and requirements will contribute to the final landscaping design
features. For example the spectator mounding will be strengthened with grasses and vegetation that have minimal
maintenance requirements.
Hobsons Bay City Council Stormwater Harvesting Projects
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WATER QUALITY MONITORING STRATEGY
City West Water obtained water quality samples for the three sub-projects over the next 5-6 months. Six samples
were collected for each site: 3 wet weather events and 3 dry weather events.
Ongoing monitoring has been conducted in accordance with Environmental Improvement Plans (EIP) for each sub
project. The EIPs are currently being reviewed based on principles set out in the national stormwater harvesting
and reuse guidelines. The EIP will also incorporate information obtained from the sampling program.
Hobsons Bay City Council Stormwater Harvesting Projects
22
COMMUNITY ENGAGEMENT AND CONSULTATION STRATEGY
Communications Plan
Project name: Hobsons Bay City Stormwater Harvesting Project
Contacts: Marg Scanlon, Manager Recreation and Community Facilities
Project objective:
The prolonged drought and resultant water restrictions together with known climate change impacts generated unprecedented interest
in water issues motivating the community to value all forms of water in Victoria. Hobsons Bay City Council in partnership with the
Federal Government and City West Water have undertaken a stormwater harvesting project to establish alternative water schemes for
the purpose of reserve irrigation, specifically at Laverton Recreation Reserve, JT Gray Reserve, Paisley Park and Williamstown Cricket
Ground.
Campaign themes:
Project Status – to ensure stakeholders were aware of the current activities throughout the life of the project and where appropriate be
aware of potential impacts to recreation reserve access due to works.
Opportunity for input – to ensure stakeholders were aware of consultation options enabling them opportunities to provide input to the
project.
Key outcomes:
- to ensure the project objectives or positive outcomes were communicated to relevant stakeholders and others potentially
interested in such works.
- to develop a business model for future implementation on other sites etc.
Key challenges:
Potential key challenges include;
- Maintaining community interest during design development stage when there was little to see occurring on the ground.
- Communicating the project purpose during times of high rainfall when there was an element of scepticism.
Hobsons Bay City Council Stormwater Harvesting Projects
23
-
Meeting similar outcomes on numerous other sporting reserves throughout Hobsons Bay City.
Complex sites with a range of aspects for further detailed consideration eg. Flora fauna, heritage, cultural etc.
Communication objectives:
To develop a clear, practical plan to manage and implement engagement and communication with relevant organisations and
individuals with regard to the project.
To establish a formal tool that will assist with project communication review and evaluation for future project consideration.
Communications budget:
Various methods of communication were used, some of which require budget and/or resources and others were sourced free of any
charges. Primarily the project budget included communication costs.
Typically any project updates or information included on Council’s website, local media releases and Councillor Columns were free of
charge. Community stakeholder workshops or information sessions, advertisements, site signage, purchased media coverage and the
like required budget.
Project background:
Refer to the Project Management Plan as attached.
Milestones:
Refer to the Project Management Plan as attached.
Hobsons Bay City Council Stormwater Harvesting Projects
24
Stakeholders:
Note: this matrix will help you rate the importance and influence of your stakeholders over your project, and devise engagement
strategies to manage that influence.
Low
High
1
3
2
4
Low
High
Importance of the project
to the stakeholder
Extent of influence/power of the stakeholder to affect the project outcome
Rating:
1. Control/Monitor 2. Inform
3. Consult
4. Partner
Stakeholder
Rating
Actions
Who responsible
Federal Government (specifically
Department of Sustainability,
Environment, Water, Population and
Communities)
Resident Clubs
4


Formal agreements, report and auditing processes.
Regular updates (also informal via telephone and
visitations).
Project Control Group1
4
2
Regular updates.
Opportunity for input.
Were the project champions.
Updates at significant milestones.
Project Control Group
Non resident Clubs




1
Project Control Group
In the first instance the PCG will identify communication needs and options. Operationally the Project Chair will implement the actions as agreed, as per the communication plan.
Hobsons Bay City Council Stormwater Harvesting Projects
25
LMS – Private Management Group
4
Leagues and Associations
2
Schools
2
Council Departments
4
Council
4
City West Water
4









Potential to be future partners.
Regular updates.
Opportunity for input.
Were the project champion.
Important to keep updated for the purposes of site access,
minimal operational interruptions and ensure ongoing.
amicable working relationship.
Updates at significant milestones.
Potential to be future partners.
Potential to be project champions.
Updates at significant milestones.
Potential to be future partners.
Regular updates.
Ongoing communication to ensure project compliance,
relevance and implementation.
Regular updates.
Potential to be project champions.
Formal agreements to secure project partnership and
commitment.
Regular project meetings.
Joint media releases and photo opportunities where
appropriate.
Specific site regular updates.
Formal reporting regarding project status.
Joint media releases and photo opportunities where
appropriate.
Potential for future similar project developments and
partnerships.
Share learnings and project knowledge.
Project network opportunities.
Share learnings and project knowledge.
Project network opportunities.

Land ownership relationships.












Melbourne Water
4




Other local government authorities
2
Industry Networks (inc. WASH
Group)
2
State Authorities including VicRoads,
3
2
Project Control Group
Project Control Group
Project Control Group
Project Control Group
Project Control Group
Project Governance
Structure at various
levels2
Project Governance
Structure at various
levels
Project Control Group
Project Governance
Structure at various
levels
Project Governance
City West Water and Melbourne Water governance structure to determine operational implementation.
Hobsons Bay City Council Stormwater Harvesting Projects
26
VicTrack, Department of
Sustainability and Environment,
Melbourne Water.
Media
1


Access and necessary approvals/permits.
Future partnership opportunities.
Structure at various
levels


Inform media of the project and funding announcement.
Offer photo opportunities and feature articles as the project
progressed.
Respond to any media enquiries concerning the project.
Council
Communications unit in
consultation with the
media units of key
stakeholders

Key messages:
 Improved environmental benefits via the catchment of stormwater prior to discharge to Port Phillip Bay
 Reducing potable water by approximately 200 mega litres while maintaining fully functional sporting reserves.
 Integrated water management system that will benefit the sports field users, community and providers.
 Improved carbon offset through a range of measures.
 Project partnerships demonstrating the recognition of skills and expertise and capacity to work together to achieve agreed
outcomes.
Secondary messages:
 Improved and sustainable sport and recreation facilities providing a range of options.
 Drought proofing of sports fields.
 Viability of the clubs to continue operations through reduction in costs.
 Potential to increase participation
Communications materials:
Generally various communication materials will be used depending on the communication purpose and more often than
not a range of materials will be used at the one time. The following range of materials will be considered and
implemented as required over the life of the project;
 Club/Stakeholder Forum – the Council’s Recreation Department has a regular Club Forum program, which provided all
community sport and recreation clubs within Hobsons Bay with a range of free workshops and forums to discuss issues, current
projects etc.
 Local media through the Council’s regular newsletter (Pelican Post) and the Ward Councillor column to provide updates,
milestone activities, club representative and project partner perspectives.
 Media alerts were released when the community needed to be updated on immediate or important information.
 Photograph opportunities with the local media will also be used where possible to provide as much visual content as possible.
 The Council website to provided project overview including history and objectives, current status, timelines, site specific details,
benefits, timelines etc. The Council’s website content also linked to the Council’s Libraries therefore providing exposed
readership.
Hobsons Bay City Council Stormwater Harvesting Projects
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



‘Councillors in the Loop’ was a weekly internal publication used to update Councillors on activities and to forewarn them of any
critical events or activities.
On-hold messages, conducted through the Council’s telephone system, provided audio of project updates and alerts. There was
capacity to have this information running for short or longer periods of time as required. Typically this was used to reinforce key
events or activities.
Newsletters – bi-monthly to the sport and recreation clubs within Hobsons Bay provided an update on the project status.
Site signage to defined project works, benefits, timelines, partners, points of contact etc.
Action plan
Objective
Stakeholde
r
Activity
Key messages
Date
Who
Status
Phase one – Project Announcement and Inception
Advised community and
project stakeholders of
the project’s confirmed
funding and subsequent
commencement.
Project
partners,
resident
sporting
clubs,
Councillors
and local
media.
Media announcement
including afternoon tea
(provided opportunity to
meet, greet and view
concept plans on
display).
Council, Federal
Government and City
West Water project
partnership and
commitment.
Importance of droughtproofing assets.
2010
MS/Comm
s/PCG

Phase two – Project Development and Implementation (including Feasibility, Functional Design and Construction)
Provided regular project
updates
Refer PCG minutes and
Federal Government
regular reports
Sports
Clubs, local
residents,
leagues and
associations
All
Pelican Post publications,
Council Website,
Councillor Columns,
Council’s Recreation
Newsletter
Specific to the item,
identified issue or
opportunity
Project status
Timelines
Objectives and outcomes
2011-2013
MS/Comm
s/PCG
Ongoing
Specific to the item,
identified issue or
opportunity
2011-2013
MS/Comm
s/PCG
Ongoing
Hobsons Bay City Council Stormwater Harvesting Projects
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Objective
Stakeholde
r
Activity
Key messages
Date
Who
Status
Phase three – Project Completion
Provided information
regarding the outcomes
and success of the
systems.
HBCC,
CWW, MW,
Sports
Clubs, local
residents,
leagues and
associations
WASH
Evaluation (process,
works, communication,
partnerships, governance
etc.)
All
Pelican Post publications,
Council Website,
Councillor Columns,
Council’s Recreation
Newsletter,
Industry articles,
Industry awards and
recognition programs.
Various for public release
and specific reports for
internal and cross
partnerships.
Positive outcomes specific
to partnerships, reduced
use of potable water,
effective systems,
operational improvements
and ground quality.
2013
MS/Comm
s/PCG
Various
2013
MS/Comm
s/PCG
Hobsons Bay City Council Stormwater Harvesting Projects
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Issues management
They say
How long will the grounds be out of action for?
What are the project outcomes or benefits to clubs?
What about the remaining sporting reserves throughout
Hobsons Bay that have limited potable water?
How does the Council justify such a significant expenditure?
We say
Current project timeline schedules defined the works period and
the subsequent impact to the users. This also assisted with
determining need/capacity to reallocate clubs to reserves. For
the minor interruption clubs were in receipt of improved sports
field facilities in the long term.
Defined improved ground capacity, drought proofing and
improved water management specifically draining and irrigation.
Detailed the financial benefits to both the Council and the clubs.
Given the success of this project already, the Council is
considering the next precinct or reserves that have potential to
be upgraded in a similar manner. The Council will continue to
work with the water authorities to develop the next project.
In the long term, the Council and the community are better
placed with reduced water costs and a more sustainable
approach to water demand and use on Hobsons Bay’s sporting
reserves.
Hobsons Bay City Council Stormwater Harvesting Projects
30
Stakeholder contact details
Individual / Group
Description
City West Water
Key project partner
Melbourne Water
Community sporting
clubs, schools, leagues
and associations (various)
Project partner
Project stakeholders
Contact Details
Refer project database (contact MS for
specific details)
Refer project database
Refer database managed by Hobsons
Bay City Council.
Website
http://www.citywestwater.com.au/
http://www.melbournewater.com.au
Various
Evaluation3
Note: It is important to do an evaluation and analysis of the communication strategy and techniques to determine how they can be improved in the future.
Objective
To gain media profile of the
project and raise community
awareness.
To formally commence project.
To demonstrate the active
partnerships.
To raise awareness of the
project commencement and
the funding secured.
Data
Minister’s Project
Announcement
Evaluation date
Who
November 2010
Project Committee
Appendix 1 – Stakeholders
3
It should be noted that this Communications Plan has been established as a live document, therefore at the time of its development minimal evaluation has occurred but
will occur over the life of the project and the implementation of this plan.
Hobsons Bay City Council Stormwater Harvesting Projects
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Resident Clubs
The resident clubs based at each of the respective reserves had the following interests in the project;
- Reduced energy and resource costs
- Improved turf facilities including consistency in turf surface quality
- Consistent seasonal management of the reserve surface
- Support the success of this pilot project
The Council administers all seasonal ground allocations through a formal Ground Allocation Request procedure and this includes any
necessary reallocations due to works.
Laverton Recreation Reserve
JT Gray Reserve
Laverton Football Club
Williamstown Soccer Club
Laverton Cricket Club
Barnestoneworth United Soccer
Club Altona
St. Johns Williamstown Cricket
Club
Williamstown Congs Cricket Club
Laverton Soccer Club
Laverton Park Tennis Club
Paisley Park
Altona East Soccer Club
Williamstown Cricket
Ground
Williamstown Football Club
Altona Magic Soccer Club
Williamstown Cricket Club
Lacrosse Club
Williamstown Super Rules
Non-Resident Clubs
There are an estimated 160 community sport and recreation clubs across Hobsons Bay City Council that regularly use and rely on
access to sporting ovals and reserves.
The sports represented by the clubs include, but are not limited to, Australian Rules Football, Soccer, Baseball, Cricket, Softball,
Hockey, Lacrosse, Athletics, Rugby,
The majority of these clubs include programs and competitions specifically for juniors, females, males, mixed and senior teams and
more recently there has been significant growth in accessible programs for persons with varying abilities and mobility.
Leagues and Associations
The following leagues and associations represent the affiliated clubs based at the project reserves.
- Western Region Football League
- Cricket
- Lacrosse
- Soccer
Hobsons Bay City Council Stormwater Harvesting Projects
32
The access to grounds was of particular interest to the leagues and associations for final series, inter-league competitions and other
events.
More frequently the quality of the grounds is being identified by leagues and associations and particularly during extreme weather
conditions when the grounds are hard or particularly wet and boggy. This project has overcome these concerns and address some of
the typical health and safety issues associated with these extreme conditions.
Schools
Schools within the region have access to all of the Council’s sporting reserves and these are administered through the Grounds
Allocations system. Typically schools without their own facilities tend to use the reserves closest to them and many of the Council’s
Reserves are used for inter-school competitions on a regular basis.
Specifically;
Laverton District Sports Association (Regional Schools Network)
Hobsons Bay Division Sport
Local residents
Local residents have a genuine interest in the activities of the Council and similarly the activities of City West Water. The residents’
interests include;
 Specific site works and retention of quality open space
 Understanding of Council expenditure and energy efficient strategies
Private Management Group
Leisure Management Services (LMS) provide contracted services for the Council, specifically management services for the Altona Lakes
Golf Course and Bayfit Leisure Centre.
Council Departments
Hobsons Bay City Council has a commitment to develop sustainable, quality sporting reserves for the purposes of encouraging active
participation by local residents and for sporting competition.
WASSH Network
Hobsons Bay City Council has joined the WASSH Network and subsequently this network of like projects are a group of stakeholders.
The interests of the WASSH Network include project status, learning’s and challenges. At this stage the WASSH Network are meeting
every second month.
Hobsons Bay City Council Stormwater Harvesting Projects
33
PROJECT ASSESSMENT
Achievement of project deliverables (e.g. completed infrastructure works) and outcome realisation
Project finance - an overall statement on the incomes from all funding sources and project cash and in-kind expenditures; outline receipt of the Australian
Government funds over financial years


Refer audited statement to be provided separately.
Refer interest earned statement as provided separately
The volume of stormwater harvested/supplied and potable water savings achieved by the project; where the treated stormwater from the project is being used
and for what purposes
 This total project was designed to harvest and supply 184ML/yr for the purposes of irrigating sports grounds within Hobsons Bay City Council.
Levelised cost of water supplied as a result of the project
Amount of GHG emission offset and/or energy saving achieved as a result of the project
Other environmental benefits if any (e.g. mitigation of the risks/impact of localised flooding, improvement of the water quality in receiving waters, generation of
environmental flows etc.)
 Both the Paisley and Laverton schemes include flood mitigation specifically through the increased capacity to manage extreme rainfall in short periods.
 Excess treated water is transported to other Council reserves and public open space including the Williamstown Botanic Gardens. In times of extreme volumes of
excess treated water any need to divert this to Port Philip Bay will result in the improved water quality health of the Bay.
Social benefits (e.g. provision of educational opportunities, increase of public awareness of water sensitive urban design, contribution to local employment)
 Various community education and informing opportunities have arisen throughout the life of this project which has raised awareness and understanding across the
Hobsons Bay Community.
 As a result of the skill development and expertise gained by specific Hobsons Bay City Council officers, other projects have been undertaken and completed such
as the Cherry Lake and Gloucester Reserve Car Parks which include several water sensitive urban design elements.
 Local community groups such as the Laverton Creek Friends Group have taken particular interest in these schemes which has resulted in additional volunteer
activities such as tree planting and other waterway improvements. These activities directly contribute to the success of the scheme.
Summary of outcome realisation and its extent
Hobsons Bay City Council Stormwater Harvesting Projects
34
Appendix 2
Attachments:
- Minister Announcement media release
- Water Industry Article
Refer: Project website www.hobsonsbay.vic.gov.au
Hobsons Bay City Council Stormwater Harvesting Projects
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9.0 PROJECT RISK ANALYSIS
Risk Type
Risk Description
Consequence
Type
Pre-mitigation Risk Assessment
Post – mitigation Risk Assessment
Mitigation Strategies
Likelihood
Risk
Allocation
How accounted
for by CWW
Conseq.
PART A: PRE-COMPLETION RISK REGISTER (design, approvals, construction, commissioning phase)
Changes in law/policy
Change in State
Environment/Health
Protection Regulations
Biofilter treatment
and Reticulation
specification may
not meet future
EPA or DH
requirements
Time and cost
Unlikely
Minor
Low
Ensure design conforms to
latest guidelines and
regulations Maintain
Communication with EPA
& DH regarding such
schemes
Rare
Minor
Low
CWW &
HBCC
Managed
Legislative or Policy
Change
Changes in
legislation or
policy
requirements that
impact on the
Project (e.g.
ownership of
stormwater)
Time or Project
not approved
Possible
Minor
Medium
Project aligned with
prevailing policy &
legislation. Implement
Stakeholder
communications strategy.
Unlikely
Minor
Low
CWW &
HBCC
Managed
CWW policy Change
Change in policy
regarding the
implementation of
alternative water
projects
Project not
approved Time,
Cost Reputation
Possible
Minor
Medium
Project aligned with
prevailing policy &
legislation. Brief GM's and
board early in the project
(e.g. Project Conception)
Rare
Minor
Low
CWW
Managed
Commercial & Contractual
Concluding agreement
with HBCC
Risk that HBCC
negotiations
result in an
unsatisfactory
outcome.
Cost increase
for alternative
water, OR,
Project does not
proceed.
Possible
Minor
Medium
Consultation established
with HBCC. Contract will
be negotiated before
construction begins.
Rare
Minor
Low
CWW
Managed
Concluding agreement
with MW
Risk that HBCC
will be unable to
Cost increase
for alternative
Possible
Minor
Medium
Consultation established
with MW.
Rare
Minor
Low
HBCC
Managed
secure a licence
for extraction
from MWC.
water, OR,
Project does not
proceed.
Hobsons Bay City Council Stormwater Harvesting Projects
Licence will be secured
before construction begins.
36
Risk Type
Risk Description
Pre-mitigation Risk Assessment
Consequence
Type
Post – mitigation Risk Assessment
Mitigation Strategies
Likelihood
Risk
Allocation
How accounted
for by CWW
Conseq.
Counterparty Risk
Dispute between
CWW and the
contractor(s)
delivering the
project.
Time AND/OR
cost
Unlikely
Minor
Low
All third party contract
conditions are agreed with
robust dispute resolution
processes that lead to
timely resolution.
Unlikely
Insignificant
Low
CWW
Contingency
Default & Termination
Risk that the
contractor(s)
withdraws
becomes
insolvent or is
terminated.
Time and cost
Unlikely
Minor
Low
Ensure adequate security /
bonding is provided by
contractor(s). Tender
evaluation to include both
performance and financial
strength criteria, with
appropriate due diligence
undertaken prior to
contract award.
Rare
Minor
Low
CWW
Managed
Force majeure
The inability to
meet contracted
service delivery
(pre completion)
is caused by
reason of force
majeure events.
Time and cost
Rare
Minor
Low
Adequate insurance to be
obtained for those FM
events that would be
captured by insurance
coverage.
Rare
Insignificant
Low
CWW
Managed as per
company policy
and procedures
Probity
Probity breaches
compromise (or
perceived to
compromise)
outcome
Time and cost to
rectify;
reputation/legal
Possible
Moderate
Significant
CWW procurement,
probity and conflict of
interest guidelines will be
strictly adhered to.
Rare
Moderate
Low
CWW
Managed
Time and cost
or project
cannot proceed
Possible
Moderate
Significant
Local planning authority is
HBCC Consultation with
Council has confirmed that
land use planning permits
not required. Any
vegetation loss to comply
with the Victorian Native
Vegetation Management
Framework
Unlikely
Minor
Low
CWW
Managed
Time and cost
Unlikely
Minor
Low
Unlikely
Insignificant
Low
CWW
Contingency
(time and cost)
Design & Construction (incl. Planning & Management)
Approvals
Site Access &
Obstruction
Planning and/or
other statutory
approvals
particularly from
Local Council.
Adverse weather
conditions
preventing
access or
Hobsons Bay City Council Stormwater Harvesting Projects
Detailed site condition
analysis undertaken prior
to commencement of
design process to
37
Risk Type
Risk Description
Pre-mitigation Risk Assessment
Consequence
Type
Likelihood
Construction
Change in
specification or
scope after
detailed design
Physical
obstructions. (e.g.
rocks, acid
sulphate soils
encountered
during
excavation) third
party assets (e.g.
pipe, electrical
cables) Potential
for acid sulphate
soils due to site’s
close proximity to
Port Phillip Bay.
Risk
Allocation
How accounted
for by CWW
Conseq.
physical
obstruction.
Process/Design
change (Variations)
Post – mitigation Risk Assessment
Mitigation Strategies
determine physical
impediments /
obstructions. Adverse
weather conditions
allowances are established
in provider contracts.
Time and cost
Possible
Minor
Medium
Cost and delay
Possible
Moderate
Low
Delay
Rare
Moderate
Medium
CWW to agree on the
scope that is provided to
contractor to design and
deliver.
CWW for
variations
required by
CWW
Design
Contractor
for variations
based upon
design
deficiency
(to the
extent
provided for
in the
contract).
Dollar Sum for
CWW variations
Change due to
design
deficiency part
Dollar Sum for
risk taken by
design
contractor part
contingency for
residual risk
Unlikely
Minor
Low
Detailed site condition
analysis undertaken prior
to commencement of
design process to
determine physical
impediments /
obstructions. Due care
taken to identify third party
assets
Possible
Insignificant
Low
CWW or
Contractors
Managed &
Contingency
Where Statewide /
National industrial action
impacts on the project,
CWW to work with
contractors to mitigate
Rare
Minor
Low
CWW or
Contractors
Contingency
Flooding from
creek possible
during
construction.
IR disputes
(state/national)
Risk of strikes,
industrial actions
beyond the
control and scope
of operations.
Hobsons Bay City Council Stormwater Harvesting Projects
38
Risk Description
Risk Type
Consequence
Type
Pre-mitigation Risk Assessment
Post – mitigation Risk Assessment
Mitigation Strategies
Likelihood
Risk
Allocation
How accounted
for by CWW
Conseq.
impact.
Environmental and OH&S
Increased safety
standards
Increased
construction
safety
requirements.
Cost
Possible
Minor
Medium
Transfer to Contractors.
Unlikely
Minor
Low
Contractors
Managed
OH&S Risks
OH&S risks
during
construction
Time, cost,
Injury &
reputation
Possible
Major
Significant
Tender evaluation to
include non-financial
criteria such as OH&S
systems, credentials and
prior history in successful
management of OH&S
issues. Construction
OH&S risks to be
transferred to Contractors.
Unlikely
Moderate
Medium
Contractors
Managed
Public safety
Public safety is
compromised due
to construction
activity.
Injury
Unlikely
Major
Medium
Security fencing and
controlled access to site.
Contractor to create Safety
Management plan and
ensure that all other
appointed contractors
operate according to the
Plan.
Rare
Major
Medium
Contractor
Dollar Sum for
fencing
Managed for
residual
Flora and Fauna
Construction
impacts on
threatened flora
or fauna
Time, cost
and/or
environment
Possible
Moderate
Significant
Detailed flora and fauna
assessment is currently
being carried out, which
will inform detailed design,
having regard to avoiding
sensitive sites. Contractor
to provide Environmental
Management Plan and
ensure that all other
Unlikely
Moderate
Medium
CWW,
HBCC &
Contractor
Managed
Hobsons Bay City Council Stormwater Harvesting Projects
39
Risk Type
Risk Description
Consequence
Type
Pre-mitigation Risk Assessment
Post – mitigation Risk Assessment
Mitigation Strategies
Likelihood
Risk
Allocation
How accounted
for by CWW
Conseq.
appointed contractors
operate according to the
Plan.
Noise, Odour & Dust
Noise, odour
and/or dust
during
construction
exceed statutory
limits
Time, cost and
legal
action/reputation
Possible
Minor
Medium
Contractor to provide
Environmental
Management Plan and
ensure that all other
appointed contractors
operate according to the
Plan. Cover potential
odour sources, ventilate
and treat air before
discharge during
commissioning Acoustic
control incorporated in
proposed design solution.
Commissioning plan to
address noise on odour
monitoring and control.
Dust suppression as
required
Unlikely
Minor
Low
Contractor
Dollar Sum for
engineered
odour and noise
controls
Contingency for
other risks
Environmental Impact
from discharge
sediment or other
pollutant
discharge during
construction
Possible legal or
reputation if
causing
environmental
hazard
Possible
Moderate
Significant
Contractor to provide
Environmental
Management Plan and
ensure that all other
appointed contractors
operate according to the
Plan. Commissioning plan
to address all potential
offsite sediment discharge
risks, including identifying
appropriate control
measures.
Unlikely
Minor
Medium
Contractor
Dollar Sum for
engineered
controls.
Contingency for
other risks.
Contaminated Land
Construction
alignment
crosses
contaminated
site. There is
potential
Possible legal or
reputation if
illegal disposal
or handling of
contaminated
soil or Cost for
cleaning up
Possible
Moderate
Significant
Detailed geotechnical
assessment will be carried
out, which will inform
detailed design, having
regard to avoiding
contaminated areas.
Rare
Minor
Low
CWW and
contractor
Managed
Hobsons Bay City Council Stormwater Harvesting Projects
40
Risk Type
Risk Description
Pre-mitigation Risk Assessment
Consequence
Type
Post – mitigation Risk Assessment
Mitigation Strategies
Likelihood
Risk
Allocation
How accounted
for by CWW
Conseq.
for contaminated
land along
Kororoit Creek
Road.
affected areas
Contractor to provide
Environmental
Management Plan and
ensure that all other
appointed contractors
operate according to the
Plan.
Solid Waste
Disposal of solid
waste to landfill
causes
environment
impact
Possible legal or
reputation if
illegal disposal
(such as
prescribed
waste)
Possible
Moderate
Significant
Contractor to dispose of
water as per their
environmental
management plan for the
disposal of proscribed
waste.
Rare
Minor
Low
CWW
operator
Managed
Native Title
Native Title claim
may preclude
project
proceeding, or
requires a
compensation
payment.
Cost and time to
relocate
infrastructure
OR Project does
not proceed
Rare
Moderate
Low
Preliminary assessment
did not identify any current
native title claims. Detailed
cultural heritage
assessment to be
undertaken concurrently
with detailed design
process.
Rare
Minor
Low
CWW
Managed
Cultural/Archaeological
Heritage
A cultural site
may be found.
Time and cost if
infrastructure
needs to be
modified
Possible
Minor
Medium
Engage relevant with
heritage and community
groups in accordance with
Stakeholder Plan
Preliminary site
assessment completed.
Site cultural heritage
assessment to be
undertaken concurrently
with detailed design
process.
Unlikely
Minor
Low
CWW
Managed &
Contingency
Estimation - pre construction
Cost Blowout
As the project
progresses from
preliminary
design the
estimated cost
increases
Cost
Likely
Insignificant
Low
Appointment of specialist
engineering to develop the
functional specification and
cost estimate. Independent
cost review
Possible
Insignificant
Low
CWW until
contract let
Managed and
contingency
Project funding (I)
CWW cannot
access sufficient
Project does not
proceed or is
Possible
Insignificant
Low
Preparation of a robust
Business Case.
Unlikely
Insignificant
Low
CWW
Managed
Hobsons Bay City Council Stormwater Harvesting Projects
41
Risk Type
Risk Description
Pre-mitigation Risk Assessment
Consequence
Type
Mitigation Strategies
Likelihood
Post – mitigation Risk Assessment
Risk
Allocation
How accounted
for by CWW
Conseq.
funds to deliver
the project due to
cost increases
scaled back
Project funding (II)
HBCC cannot
access sufficient
funds to deliver
the project due to
cost increases
Project does not
proceed or is
scaled back
Possible
Insignificant
Low
HBCC to undertake
detailed business case
and obtain approvals
before construction
Unlikely
Insignificant
Low
HBCC
Managed
Project funding (III)
State/Federal
funding cannot be
secured
Project does not
proceed or is
scaled back
Possible
Medium
Significant
CWW & Project Partner to
undertake business case
review and obtain
approvals before
construction
Unlikely
Medium
Significant
HBCC
Managed
Time and cost
Likely
Insignificant
Low
CWW responsible for
interface issues between
treatment system and
reticulation system if
different procurement
methods or contractors
appointed. CWW to
develop detailed
implementation plan and
hold regular progress
meetings with
contractor(s). Appointment
of Construction
Management Contractor if
deemed to provide Value
for Money.
Unlikely
Insignificant
Low
CWW &
HBCC
Managed &
Dollar Sum
CWW can reprioritise its
capital works budget or
seek an increase in
borrowings to cover an
increase in capital costs.
Seek reduced dividend to
shareholder. Staged
delivery possible to match
funding availability. Seek
cost recovery through
future water plans.
Implementation [Refer also to Part B]
Co-ordination of
Works/Project Delay
Phasing of the
total project
works (i.e.
treatment system
& reticulation
system) in-sync
with one another
Hobsons Bay City Council Stormwater Harvesting Projects
42
Risk Type
Pre-mitigation Risk Assessment
Consequence
Type
Risk Description
Mitigation Strategies
Likelihood
Post – mitigation Risk Assessment
Risk
Allocation
How accounted
for by CWW
Conseq.
Political & Stakeholder Management [Refer also to Part B]
Community
Acceptance
Risk of
community
objections against
the siting and the
design of the
infrastructure
Time, cost and
loss of
reputation
Likely
Minor
Medium
Location of treatment
system on HBCC owned
land. Consultation with
local community groups
Unlikely
Minor
Low
HBCC
Managed
Community groups
Risk of
community
groups objections
to SW diversion
Time, cost and
loss of
reputation
Possible
Moderate
Significant
HBCC to consult with local
community groups to
ensure support for project.
Unlikely
Minor
Low
HBCC
Managed
Community groups
Involvement of
unforseen
community lobby
group
Time, cost and
loss of
reputation
Possible
Moderate
Significant
Clear strategy for
communicating with
‘unforeseen’ community
lobby groups to be
included in the agreed
Consultation Management
Plan.
Possible
Minor
Medium
HBCC &
CWW
Managed &
Dollar Sum
Stakeholder
mismanagement
Failure to satisfy
all stakeholder
requirements
Time, cost and
loss of
reputation
Unlikely
Major
Medium
The Consultation
Management Plan will
detail the processes of
managing key ‘external’
stakeholder expectations.
Unlikely
Minor
Low
HBCC &
CWW
Managed
Possible
Minor
Medium
CWW
Managed
PART B: POST-COMPLETION RISK REGISTER (operating phase)
Changes in law/policy [Refer also Part A]
Legislative or policy
Change
The occurrence
of changes on
legislation or
policy
requirements that
were not
anticipated at
project
commencement
Cost
Likely
Minor
Medium
CWW to manage the risk
as part of CWW’s normal
business risk profile.
Commercial & Contractual [Refer also Part A]
Hobsons Bay City Council Stormwater Harvesting Projects
43
Risk Type
Counterparty Risk
Pre-mitigation Risk Assessment
Consequence
Type
Risk Description
Likelihood
Dispute between
HBCC and CWW
over service
delivery and / or
Cost
Possible
The inability to
meet contracted
service delivery is
caused by reason
of force majeure
events.
Risk
Allocation
How accounted
for by CWW
Conseq.
Insignificant
Low
contractual
arrangements.
Force majeure
Post – mitigation Risk Assessment
Mitigation Strategies
Supply Agreement to
provide clear and concise
details of the party’s
respective obligations.
Unlikely
Insignificant
Low
CWW
Managed
(Business Risk)
Maintain strong
relationship with HBCC
throughout operating
period to assist in
resolution of issues before
recourse to contract.
Agreements to provide
clear dispute resolution
processes.
Cost ,
suspension of
service delivery
by CWW
Rare
Moderate
Medium
Adequate insurance to be
obtained for those FM
events that would be
captured by insurance
coverage.
Rare
Minor
Low
CWW for
insurable
FM
Managed
(Business Risk)
Demand & Economic [Refer also Part A]
Stormwater Quantity
Stormwater
quantity is
insufficient to
meet water
demand (e.g. low
Rainfall)
Reputation
Possible
Moderate
Significant
No guarantee regarding
water quantity supplied as
outlined in supply
agreement. Conservative
estimation of yields
Unlikely
Minor
Low
CWW &
HBCC
Managed
Supply Risk
Failure of water
supply system
Reputation
Likely
Moderate
Significant
Implementation of
Stakeholder
Communications Plan
Implement maintenance
procedures
Possible
Minor
Medium
CWW &
HBCC
Managed &
Dollar Sum
Unlikely
Minor
Low
Project cost allocation to
cover green power or
renewable energy
purchases
Rare
Minor
Low
CWW
Managed &
Dollar Allocation
for renewable
energy
Environmental and OH&S [Refer also Part A]
Greenhouse Gas
(GHG emissions)
Project increases
CWW net
greenhouse gas
emissions
Cost, reputation
environment
Hobsons Bay City Council Stormwater Harvesting Projects
44
Risk Type
Risk Description
Pre-mitigation Risk Assessment
Consequence
Type
Post – mitigation Risk Assessment
Mitigation Strategies
Likelihood
Risk
Allocation
How accounted
for by CWW
Conseq.
Site Amenity
Project
Infrastructure
impacts on public
amenity
Reputation
Likely
Moderate
Significant
Allocation for revegetation
and natural screening of
assets
Unlikely
Minor
Low
CWW
Managed Dollar
Sum for site
revegetation
Public safety (I)
Public safety is
compromised due
to the operation
of the system.
Human Health
and reputation
Rare
Moderate
Medium
Operational Safety
Management Plan.
Fencing around key
system assets.
Rare
Insignificant
Low
CWW and
HBCC
Managed $
Dollar Sum
Maintain adequate Public
Liability insurance.
Restricted irrigation
practices (National
Guidelines). Restricted
access during irrigation
(e.g. irrigate at night).
Public Safety (II)
Public safety is
compromised
through
overexposure or
ingestion of
alternative water
Human Health &
Reputation
Likely
Major
Significant
Implement customer
education program Use of
treated stormwater (higher
quality). Signage and
labelling or recycled water
taps and pipes. Ensure
operation of scheme
follows EPHC best
practice guidelines i.e.
restricted access during
irrigation.
Unlikely
Moderate
Medium
CWW
Managed
Flora and Fauna
Operation
impacts on
threatened flora
or fauna
Cost, reputation
and
environmental
damage
Unlikely
Minor
Low
Operational
Environmental
Management Plan to
address all flora and fauna
issues during operational
period.
Rare
Minor
Low
CWW
Managed
Hobsons Bay City Council Stormwater Harvesting Projects
45
Risk Type
Noise & Odour
Consequence
Type
Risk Description
Pre-mitigation Risk Assessment
Likelihood
Noise and odour
during operation
exceed statutory
limits
Post – mitigation Risk Assessment
Mitigation Strategies
Risk
Allocation
How accounted
for by CWW
Conseq.
Cost, reputation
and
environmental
damage
Unlikely
Moderate
Medium
Commissioning of Project
prior to operations
commence to ensure that
design covering of noise
and odour sources is
operationally effective.
Environmental
Management Plan to
specifically address all
noise and odour issues
during operational period.
Rare
Minor
Low
HBCC &
CWW
Managed
Cost
Possible
Insignificant
Low
Comprehensive
investigative analysis
undertaken by CWW to
validate charging structure
model after detailed design
when operating costs can
be estimated with more
certainty. There is at least
a partial natural hedge for
CWW under the ESC
pricing model which (in
simple terms) allows
operating costs to be
recovered through tariffs.
Possible
Insignificant
Low
CWW
Managed
Financial [Refer also to Part A]
Charging structure
Risk that charging
structure does not
enable CWW to
recover costs
Operational & Performance [Refer also Part A]
Feedwater quality
changes
Outlet water quality
reduces
Treatment
System size
underestimated to
meet sufficient
quality
Cost to augment
treatment
system or
reduce volume
Possible
Insignificant
Low
Increase biofilter size to
accommodate further
treatment. Reduce the
volume extracted to give
more treatment ability.
Design used followed MW
best practice guidelines.
Unlikely
Insignificant
Low
HBCC &
CWW
Managed
Treatment system
is not being
maintained to
required standard
Cost to revive
treatment
system
Possible
Insignificant
Low
Ensure regular
maintenance is performed
Unlikely
Insignificant
Low
HBCC
Managed
Hobsons Bay City Council Stormwater Harvesting Projects
46
Risk Type
Risk Description
Pre-mitigation Risk Assessment
Consequence
Type
Mitigation Strategies
Likelihood
Post – mitigation Risk Assessment
Risk
Allocation
How accounted
for by CWW
Conseq.
Operating capacity &
experience
mismanagement
of new
reticulation
system
Cost and
reputation
Possible
Moderate
Significant
CWW has existing
expertise in operating
reticulation systems.
Develop and implement
Standard Operating
Procedures. Robust
design and construction of
reticulation assets.
Unlikely
Minor
Low
CWW
Managed
(Business Risk)
Operating Costs (I)
Uncertainty of
planned and
unplanned
maintenance
Cost
Possible
Insignificant
Low
Utilise historical
knowledge of pump
stations and planned and
unplanned maintenance
costs
Unlikely
Insignificant
Low
CWW
OPEX
Contingency
costs of
reticulation
system
Operating Costs (II)
Power cost
changes
Cost
Likely
Insignificant
Low
Real increase in power
costs included in financial
analysis, including
allocation for green power
(i.e. hedging carbon price
rises) There is at least a
partial natural hedge for
CWW under the ESC
pricing model which (in
simple terms) allows
operating costs to be
recovered through tariffs
Likely
Insignificant
Low
CWW
Part Managed
Operating Costs (III)
Operating cost of
reticulation
system increases
as a result of poor
construction
quality
Cost
Possible
Insignificant
Low
Competitive tender
procurement methodology
to incentivise a high quality
build. Adequate oversight
of procurement and
construction quality
Unlikely
Insignificant
Low
CWW
Managed
Hobsons Bay City Council Stormwater Harvesting Projects
47
Risk Type
Risk Description
Consequence
Type
Pre-mitigation Risk Assessment
Mitigation Strategies
Likelihood
Post – mitigation Risk Assessment
Risk
Allocation
How accounted
for by CWW
Conseq.
Alternative water not
fit–for-purpose
Feed water
quality standards
or other
contamination
(particles,
nutrients etc.) not
met prior to being
supplied to CWW
Cost, reputation,
human health
Possible
Moderate
Significant
Treatment system
maintained adequately
Service agreement does
not guarantee water
quality Management of
high risk quality incidents
in operation procedures
Unlikely
Moderate
Medium
HBCC
Managed
Transfer System
operation
Pump failure or
pipe burst
interrupting
alternative water
supply
Cost, reputation
Possible
Insignificant
Low
Incident and Emergency
response to be based on
potable system SOP.
Regular maintenance
schedule and accredited
maintenance crew
Qualified and experienced
contractors engaged for
construction
Unlikely
Insignificant
Low
CWW
Managed
(Business Risk)
Political & Stakeholder Management [Refer also to Part A]
Community groups
Involvement of
the unforseen
community lobby
group
Reputation /
cost
Possible
Minor
Medium
CWW’s Corporate
Communication
Management Plan.
Unlikely
Minor
Low
CWW
Managed
(Business Risk)
Stakeholder
mismanagement
Failure to satisfy
all stakeholder
requirements
Reputation /
cost
Possible
Moderate
Medium
CWW’s Corporate
Communication
Management Plan.
Unlikely
Moderate
Medium
CWW
Managed
(Business Risk)
Hobsons Bay City Council Stormwater Harvesting Projects
48