TERRIGAL CBD & HYLTON MOORE PARK
STORMWATER HARVESTING PROJECT
DEPARTMENT OF THE ENVIRONMENT FINAL REPORT
MAY 2014
CONTENTS
1.
2
Executive Summary ..................................................................................................................................................... - 1 1.1
Project Overview ................................................................................................................................................ - 1 -
1.2
Project Outcome and Realisation ....................................................................................................................... - 2 -
Project overview ......................................................................................................................................................... - 2 2.1
Project Background ............................................................................................................................................ - 2 -
2.2
Project Objectives and Goals.............................................................................................................................. - 3 -
2.3
Project Conditions- Requirements, Expectations, Assumptions & Constraints ................................................. - 3 -
2.4
Project Issues...................................................................................................................................................... - 5 -
2.5
Project Commencement and Completion Dates ................................................................................................ - 7 -
2.6
Project Scope/Deliverables and High Level Milestones ..................................................................................... - 7 -
2.7
Funding Sources ................................................................................................................................................. - 8 -
2.8
Project Governance ............................................................................................................................................ - 8 -
2.9
Project Activities and Conduct ........................................................................................................................... - 8 -
2.9.1
Procurement .................................................................................................................................................. - 8 -
2.9.2
Quality Control ............................................................................................................................................... - 9 -
2.10
3
4
5
Stakeholder Consultation, Community Engagement, Information and Key Promotional/Public Activities .... - 10 -
project assessment.................................................................................................................................................... - 10 3.1
Achievement of Project Deliverables ............................................................................................................... - 10 -
3.2
Project Finance ................................................................................................................................................. - 11 -
3.3
Water Savings and Uses of Harvested Water ................................................................................................... - 11 -
3.4
Amount of GHG Emission Offset/Energy Saving Achieved .............................................................................. - 12 -
3.5
Other Environmental Benefits.......................................................................................................................... - 12 -
3.6
Social Benefits .................................................................................................................................................. - 12 -
experience sharing and lessons learnt ...................................................................................................................... - 13 4.1
Preliminary Investigation ................................................................................................................................. - 13 -
4.2
Project Communication .................................................................................................................................... - 13 -
project future ............................................................................................................................................................ - 13 5.1
Proposal for Project Handover ......................................................................................................................... - 13 -
5.2
Remaining Tasks and Outstanding Work Beyond the Funding Agreement ..................................................... - 14 -
ATTACHMENTS
Attachment 1
Project Photo’s
1. EXECUTIVE SUMMARY
1.1 PROJECT OVERVIEW
Gosford Council has completed two stormwater harvesting and reuse schemes, the first at Hylton Moore Park at East
Gosford/ Springfield, and the second at Terrigal CBD. The schemes save a total of approximately 80.2 million litres of town
water per year.
The Hylton Moore Park Scheme includes 1.2ML of underground storage, a water treatment plant, and reticulation. Water
is used for the irrigation of Hylton Moore Park Sportsfields and Terry Oval. The scheme saves 30.6 million litres of water
per year.
The Terrigal CBD Scheme includes 1.6ML of underground storage located in the Council Carpark adjacent to Club Terrigal
Bowling Club, a water treatment plant, and reticulation. Water is used to irrigate the Terrigal Bowling Club Greens, The
Haven Oval, and for a variety of non-potable purposes at Crowne Plaza, including cleaning, toilet flushing, air conditioning
cooling towers, and laundering. The scheme is expected to save 50.6 million litres of water per year.
The energy requirements of both schemes will be fully offset with renewable energy. A renewable energy options report
was developed to determine a feasible renewable energy project.
Grant funding has been provided for this project by both the Federal Government through the Department of the
Environment, and the NSW Government through the Office of Environment & Heritage (formerly Department of
Environment, Climate Change & Water).
Terrigal CBD Treatment Building
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1.2 PROJECT OUTCOME AND REALISATION
All major project works at related to the Terrigal CBD are complete, including restoration of the carpark that overlies the
underground storage tank. The treatment plant has now been tested and is operating continuously.
Due to the multitude of issues experienced at the Hylton Moore Park site (as detailed later in this report), the completion
of this portion of the project has been delayed significantly. The tank and treatment plants are now complete with the
installation of the treatment unit and all pumps and ancillaries. Both the construction area and the remediated earthen
berm have been completely landscaped and grass and planting established.
2 PROJECT OVERVIEW
2.1 PROJECT BACKGROUND
The Central Coast region experienced a protracted drought which prevailed for the majority of the first decade of the 21 st
century. This drought resulted in significantly reduced stream flows in the region’s water supply catchments, with the
ultimate consequence being the decrease in dam levels to a mere 12% of capacity. During this period, Gosford City and
Wyong Shire Councils instigated a range of new water supply, conservation, and demand management initiatives,
including the most stringent water restrictions ever imposed.
The region’s sports fields were hit particularly hard by the drought through a combination of reduced direct watering via
rainfall, and the impact of water restrictions reducing the amount of irrigation available. In an effort to maintain quality
sports facilities, Council invested in a range of alternative water projects including the extensive sinking of groundwater
bores, and the construction of a recycled water plant. The facilities at Hylton Moore Park, Terry Oval, and the Haven Oval
Terrigal could not be served by either recycled water or groundwater.
The Hylton Moore Park site was fortunate to have a good stormwater resource through the large catchment and the
close proximity of the stormwater culverts. Council had been investigating the potential for a stormwater harvesting
project at this site prior to the announcement of Australian Government Funding in 2009. The Australian Government
Funding required for successful projects be a minimum of $4,000,000 in value, and the Hylton Moore Park scheme on its
own would not be this large. Council then began searching for other potential stormwater harvesting projects to join with
the Hylton Moore Park project for submission to the funding program. The Terrigal CBD location also provided a
consistently high volume stormwater resource via the reasonably large and highly suburbanised catchment area. The
presence of significant non-potable demands at the Crowne Plaza Resort, Terrigal Bowling Club, and Terrigal Haven Oval
provided an opportunity to investigate the feasibility of a stormwater harvesting scheme at this location.
Investigations indicated that there was sufficient potential stormwater supply from the catchment and available space to
house the storage and treatment infrastructure on Council owned land adjacent to the Bowling Club. Crowne Plaza and
the Terrigal Bowling Club were both consulted as part of the investigations and brought on board with the project.
Once the projects had advanced to a suitable level, concurrent funding applications were made to the NSW Government’s
‘Central Coast Water Savings Fund’ and the Australian Government’s ‘National Urban Water and Desalination Plan –
Special Call for Stormwater Harvesting and Reuse Projects’. Council was successful with both applications, receiving
funding offers of $2,000,000 from the Australian Government and $1,000,000 from the NSW Government.
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Terrigal Rainfall Historical Data
Water Usage in Crowne Plaza Terrigal
Hylton Moore Park End Uses
Hylton Moore Park Catchment
2.2 PROJECT OBJECTIVES AND GOALS
The overall project combines two sub-projects, both of which vary from each other in their objectives and goals. Both
projects were conceived with the principal objective of reducing town water consumption, and therefore contributing to
the water security of this region. The other prime objective was to secure the quality of the sports fields by providing an
irrigation source independent of water restrictions. Other objectives included improving the quality of the receiving
waterways through the removal of pollutants, and the potential to mitigate flooding impacts through the provision of
storage.
2.3 PROJECT CONDITIONS- REQUIREMENTS, EXPECTATIONS, ASSUMPTIONS & CONSTRAINTS
The Stormwater Harvesting projects have been developed from a range of studies, guidelines and constraints.
Initial studies were performed for these projects to determine the optimal storage capacity and treated water
requirements for the projects. These studies included an analysis of rainfall data, catchment areas and treated water flow
requirements. Council also relied on a report and data collected for water usage at Crowne Plaza Terrigal.
The treatment process was based on the Australian Guidelines for Water Recycling: Managing Health & Environmental
Risks (Phase 1) 2006 and (Phase 2) Stormwater Harvesting & Reuse July 2009. These guidelines provide a risk based
framework to determine the level of treatment required as well as the identification of critical control points and
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monitoring requirements necessary to mitigate risk. Council developed a Risk Management Plan based on the guidelines
and end use requirements of the stormwater. This plan was presented in a workshop to review the Health and
Environmental Risks of the project. The requirements identified through the plan and the workshop have been included
in the design for the treatment processes.
Health & Environment Risk Workshop
Council used a Hazard and Operability study (HAZOP) to identify key safety requirements for the project. This process
was run as a workshop and is designed to allow construction contractors, designers, operators and managers an
opportunity to review the project in a guided forum to ensure the safety of the plant and construction has been
adequately considered. The requirements of the HAZOP and further design reviews have been incorporated into the
design and construction contract for this project.
End User Licence Agreements were developed for the external recipients of the recycled water. These agreements
demonstrate the commitment of external organisations receiving the water to water use and provide a framework for the
safe use of recycled water. These agreements incorporate the outcomes from the Health & Environmental Risk
Management Plan and Workshop.
Further to these project specific constraints, Gosford Council developed the following management plans and strategies
to ensure proper management of this project:


Water Quality Monitoring Strategy
Risk Management Strategy
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

Renewable Energy Strategy
Communication Strategy
Council are currently undertaking works for the construction of two stormwater harvesting facilities at Hylton Moore Park
and Terrigal CBD under the provisions of the State Environmental Planning Policy Infrastructure 2007 (Infrastructure
SEPP). As such the works have been assessed in accordance with Part 5 of the Environmental Planning and Assessment
Act, 1979 and Council’s Environmental Assessment Manual.
2.4 PROJECT ISSUES
Construction at the Terrigal CBD site was impacted by the collapse of battering during the excavation for the underground
storage tank. The site was battered and Shotcrete applied to the batter. Overnight, after the Shotcrete was applied, this
batter has partially collapsed into the excavation. The collapse impacted properties adjacent to the site and resulted in
the relocation and raising of the tank within the car park. Due to the lack of soil stability at this location, the depth of the
excavation was altered and the tank made shallower. This resulted in modifications to the stormwater intake structure,
which was originally intended to be gravity fed. The raising of the tank level necessitated the installation of a wet well and
pump.
Council has encountered significant issues due to the creation of an earthen berm within Hylton Moore Park. The
proposal to Council included the creation of an earthen berm within Hylton Moore Park using the spoil from Terrigal CBD
and Hylton Moore Park. The excavation at Terrigal was performed on the basis of a VENM (Virgin Excavated Natural
Material) certificate and GIS mapping showing a low risk of acid sulphate soils. During the excavation the type of material
being excavated changed, an additional geotechnical testing was ordered. This testing revealed the presence of acid
sulphate soils. Council ceased transporting this material and treated the acid sulphate soils deposited on site at Hylton
Moore Park. Soils were treated with lime by the action of rotary hoe. Hylton Moore Park is a former tip site,
unfortunately the action of the rotary hoe has unearthed some waste from the former tip site. The presence of acid
sulphate soils and unearthed waste was raised with the EPA. Council worked with the EPA to develop an effective
remediation plan to ensure the issues created by the building waste and the acid sulphate soils are addressed. This issue
significantly impacted project timing and budget.
The Hylton Moore Park sub project was impacted by issues relating to the local flood levels. The footprint of the
underground storage tank lies within a flood detention basin. Council’s flooding and drainage planning section were
consulted and modelling undertaken to investigate any flood impacts resulting from the installation of the tank and
raising of the ground level required to accommodate it. The flood modelling indicated that the raising of the ground level
would result in a significant negative impact on flood levels in the residential area surrounding the sports fields. In order
to mitigate these impacts, the area surrounding the tank was excavated to increase the flood storage volume of the
detention basin. This required the removal of several large native trees.
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Collapsed Batter- Terrigal CBD
Hylton Moore Park Berm
Terrigal CBD Excavation Showing Batter Collapse
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Hylton Moore Park Flood Modelling
2.5 PROJECT COMMENCEMENT AND COMPLETION DATES




Project inception and Concept Design- September 2009
Funding Agreement- 24 June 2010
Design & Construction Contract Acceptance by Council 7 December 2012
Construction Completion April 2014.
2.6 PROJECT SCOPE/DELIVERABLES AND HIGH LEVEL MILESTONES
The grant project was comprised of two major stormwater harvesting sub projects, and the smaller greenhouse gas offset
project. The projects and their major components are as follows:
Terrigal CBD Stormwater Harvesting Project





1.6ML concrete underground storage tank
Water treatment plant, including dual media filter, chlorination and ultra-violet treatment, and a brick building
to house the plant
0.8km of ‘purple pipe’ reticulation
Connection of Crowne Plaza, Terrigal Bowling Club, and Terrigal Haven Oval to the scheme
Reinstating of Terrigal car park
Hylton Moore Park Stormwater Harvesting Project

1.2ML concrete underground storage
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



Water treatment plant, including dual media filter, chlorination, and a brick building to house the plant
1.5km of ‘purple pipe’ reticulation
Restoration of site
Irrigation connection to several local sports fields
Greenhouse Gas Offset Project

Replacement of air compressors at Somersby Water Treatment Plant
2.7 FUNDING SOURCES
The project was funded from the following 3 sources:
The Australian Government, via the ‘National Urban Water and Desalination Plan, Special Call for Stormwater Harvesting
and Reuse Projects’, under the ‘National Water Initiative’, which provided $2,000,000.
The NSW Government, via the ‘Central Coast Water Savings Fund’ (part of the ‘Climate Change Fund’) provided
$1,000,000.
Gosford City Council contributed the remainder of funding for this $7.1M project.
2.8 PROJECT GOVERNANCE
Gosford City Council appointed an external consultant through WorleyParsons Services Pty Ltd to provide project
management expertise. The project manager was embedded within Council’s Water and Sewerage Asset Management
and Development Business Unit, who provided the necessary direction and support to the project manager.
As required under the Australian Government Funding Agreement, a project steering committee was formed, comprising
the project manager, key Council managers, other Council support staff, and representatives from the relevant Australian
and NSW Government funding bodies. For the majority of the project, the committee met once per month at Council’s
Erina Depot.
Steering committee meetings discussed a variety of issues including upcoming Australian and NSW Government funding
milestones, contractor progress, and any major issues occurring in either sub project.
The meetings ensured that the key project stakeholders were always kept up to date with project activities and given the
opportunity to provide constructive input regarding project direction.
2.9 PROJECT ACTIVITIES AND CONDUCT
2.9.1 PROCUREMENT
Council are committed to ensuring that procurement activities are conducted in a cost effective, accountable, ethical and
professional manner and in accordance with Council Policy and State legislation. A number of different procurement
strategies have been used in the execution of this project based on the type and size of the contract.
The major construction contract was let in an open tender process which was media advertised. The award of this
contract was by way of Council determination. Project co-ordination services were procured using an existing prequalified panel for water & wastewater engineering services. Other minor contracts were quoted using Councils
quotation thresholds and guidelines on procurement or sale of goods, services and materials.
Procurement for this project to date is as follows:

WorleyParsons Services Pty Ltd has been engaged as project coordinator.
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
Kennedy Barnden Chartered Accountants were engaged to perform the initial project financial audit to satisfy
the requirements of the Federal Governments funding agreement. As this engagement was at very short notice
and only minor in nature, no tendering process was undertaken. This audit was performed on the 2011 financial
year.

Douglas Partners was engaged to perform a geotechnical investigation of Hylton Moore Park to determine if the
site of the excavation for storage is contaminated with landfill. This is expected to be a significant risk in the
construction cost of the project. The risk is best mitigated by getting competitive quotes for removal of landfill
at the time of the tender. Two tenders were assessed for this work from prequalified Tenderers. A tender
evaluation was performed for selection of a Tenderer.

Kingsway Financial Assessments Pty Ltd was engaged to undertake a financial assessment of the two preferred
Tenderers as part of the Tender evaluation.

Scape Construction Pty Ltd was engaged as the Design and Construction contractor for the stormwater off-take,
storage, treatment and reticulation. This engagement was by open tender, a full tender evaluation was
undertaken.

Kennedy Barnden Chartered Accountants was engaged to perform a project financial audit as part of the
milestone report for the Federal Government grant funding. This was performed for the financial year to date at
December 2011. As Kennedy Barnden & Associates were previously engaged for this service and the
engagement was only minor in nature, no tendering process was undertaken.

Water Futures Pty Ltd was engaged to facilitate the Health & Environmental risk workshop.

Kennedy Barnden Chartered Accountants were engaged to perform the initial project financial audit to satisfy
the requirements of the Federal Governments funding agreement. This audit was performed on the 2012
financial year.

Golder & Associates Pty Ltd have been engaged to perform an assessment of Hylton Moore Park as occupational
hygienists. This includes an assessment on the berm area prior to placement of fill material and an assessment
of the material to be excavated.

Golder & Associates Pty Ltd have been engaged to perform an assessment of the berm to confirm that acid
sulphate soils have been neutralised.

Advanced Air Compressors have been engaged to supply, install and commission air compressors at Somersby
Water Treatment Plant.
2.9.2
QUALITY CONTROL
Council has employed a number of project quality control mechanisms for this project. These include risk and safety
workshops & the development of management plans and strategies for the execution of the project.
Date
Dec 2010
Dec 2010
July 2011
Subject
Renewable Energy Strategy
Terrigal CBD and Hylton Moore Park Stormwater Harvesting and
Reuse Project
Risk Management Strategy
Terrigal CBD and Hylton Moore Park Stormwater Harvesting and
Reuse Project
Risk Management Plan
Hylton Moore and Terrigal CBD Stormwater Harvesting and Reuse
Project
Dept of the Environment FINAL Report
Author
Mikell Borg
Mikell Borg
Peter Stark
Page - 9 -
Date
Dec 2010
Subject
Water Quality Monitoring Strategy
Terrigal CBD and Hylton Moore Park Stormwater Harvesting and
Reuse Project
Author
Mikell Borg
Council has appointed a construction manager to oversee the construction of this project. As this contract is being
performed as a design and construction contract, Council are relying on external consultants appointed by the
construction contractor to perform a number of quality controls functions. Design items such as structural design,
geotechnical conditions, and process design have been inspected and signed off by external specialist consultants. While
Council is responsible to review the designs and ensure they comply with the requirements of the project, a large portion
of the quality control is independent of Council.
2.10 STAKEHOLDER CONSULTATION, COMMUNITY ENGAGEMENT, INFORMATION AND KEY
PROMOTIONAL/PUBLIC ACTIVITIES
Stakeholder consultation, community engagement, and the provision of information have been critical to the carrying out
of this project. Soon after the granting of funding, Council began the preparation of a ‘Project Communication Strategy’ in
order to define the process for communications and stakeholder consultation and engagement for the duration of the
entire project.
Council utilised a variety of strategies to consult and inform different stakeholders at different project stages. Properties
in close vicinity to the construction sites were regularly notified of the status of construction works via letter box drop or
mail out. The construction sites also included signing which explained the project background and recognised the funding
partners and their respective contributions. The broader community was kept informed of key project milestones
including the announcement of funding, selection of a winning tender, commencement of construction, and completion
of works through media releases which were presented in local newspapers and on local radio.
Once the project construction and commissioning phases are complete, another media release will be issued, along with a
project launch event in which local media, Members of Parliament, Councillors, relevant staff, and other relevant
stakeholders will be invited to attend.
3 PROJECT ASSESSMENT
3.1 ACHIEVEMENT OF PROJECT DELIVERABLES
At the completion and handover of this project, Council will have created the following assets:
Terrigal CBD



Underground Storage Facility
o Gross pollutant trap
o Wet well pumping station
o Raw storage tank & pumps
o Treated storage tank and pumps
Treatment Building
o Treatment skid unit
o Chemical Storage
o Switchroom
Reticulation Network
Dept of the Environment FINAL Report
Hylton Moore Park



Underground Storage Facility
o Gross pollutant trap
o Wet well pumping station
o Raw storage tank & pumps
Treatment Building
o Treatment skid unit
o Chemical Storage
o Switchroom
Reticulation Network
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3.2 PROJECT FINANCE
This project has funding from both the State and Federal Government. The original funding for this project is as follows:
$2M
Australian Government- Department of Sustainability, Energy, Water, Population and
Communities
$1.6M
NSW Government- Office of Environment & Heritage (Formerly Environment, Climate Change
and Water)
$3.5M
Gosford City Council
Financial audits for each financial year of this project and for the final completion have been completed as a requirement
of the milestone report for the federal government funding.
Due to the project issues detailed above various additional funding has been requested by this project from Gosford City
Council. In each case Gosford Council has approved the funding request, increasing the project budget from $4M to
$7.1M. The majority of these increases related to earthworks to remediate environmental issues with the earthen berm
in Hylton Moore Park.
3.3 WATER SAVINGS AND USES OF HARVESTED WATER
The project aims to save an average of 82.2ML of town water per year, through substitution with harvested stormwater.
The breakdown between the two sub projects and individual demands is as follows:
Terrigal CBD –
Crowne Plaza Uses and Volumes




Laundry, Cleaning, and Irrigation: 13.87ML/a
Toilet Flushing: 8.32ML/a
Boiler and Air Conditioning Cooling Tower: 18.07ML/a
Crowne Plaza Total: 40.26ML/a
Terrigal Bowling Club Uses and Volumes

Irrigation: 3.84ML/a
Terrigal Haven Oval Uses and Volumes

Irrigation: 6.5ML/a
Terrigal CBD Scheme Overall Total: 50.6ML/a
Hylton Moore Park –
All usage for irrigation as follows:




Soccer/Cricket Oval: 11.58ML/a
AFL Oval: 9.3ML/a
Baseball Field: 5.36ML/a
Terry Oval: 5.36ML/a
Hylton Moore Park Scheme Overall Total: 31.6ML/a
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COMBINED SCHEME TOTAL: 82.2ML/a
3.4 AMOUNT OF GHG EMISSION OFFSET/ENERGY SAVING ACHIEVED
Gosford City Council originally proposed to install grid connected solar panels at Council facilities in order to offset the
carbon emissions resulting from the operational energy usage of the project. A review of opportunities was undertaken in
order to determine the highest value energy efficiency projects. Options considered included the replacement of fixed
speed pumps with ‘Variable Frequency Drive’ (VFD) pumps at Council’s Somersby Water Treatment Plant, an upgrade of
lighting at Council facilities, and the upgrade and replacement of air compressor equipment and pressure lines at
Somersby Water Treatment Plant. Eventually a project to replace compressors & air lines at the Somersby Water
Treatment Plant was selected, as it provided the best value for money and other benefits to Council besides the energy
savings.
Demand Analysis Survey Data





Estimated Stormwater Harvesting Plant loads- 62.54MWh/annum
Current estimated annual power consumption Somersby compressors- 178.9MWh/annum
Power consumption estimate replacement compressors- 73.9MWh/ annum
Energy savings estimate from replacing compressors 105MWh/ annum
Excess energy savings estimate 42MWH/ annum
3.5 OTHER ENVIRONMENTAL BENEFITS
Both the Terrigal CBD and Hylton Moore Park schemes capture water from large highly suburbanised catchments, from
which gross pollutants such as bottles, cans, and plastic litter is generated. The installation of Gross Pollutant Traps (GPTs)
as part of the treatment train on both schemes will reduce the volume of litter entering the receiving waterways,
therefore providing a positive environmental outcome.
The project is also increasing the diversity of water supply sources on the Central Coast, and as a result reducing the
substantial reliance on extraction of water from natural streams.
3.6 SOCIAL BENEFITS
The key social benefit achieved from this project is improved sports field quality through the securing of an irrigation
source that will not be subject to water restrictions. Improved playing surface quality will benefit local sports clubs,
schools, and other members of the public who utilise these large community facilities, and benefit the Terrigal Bowling
Club who will use the water to irrigate their bowling greens.
Another major social/economic benefit is the reduced water cost for the external organisations connected to the
schemes. Water from the schemes will be sold to customers at 75% of the potable water price, therefore providing an
incentive for customers to connect and replace the use of potable water where possible.
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Finally, the local community is highly aware of the need to be ‘water wise’ with memories of the drought crisis earlier in
the decade still fresh in their minds. These projects demonstrate to the community Council’s commitment to improve
water security for the local community. The projects may therefore instil the community with greater confidence
regarding their water supply.
4 EXPERIENCE SHARING AND LESSONS LEARNT
4.1 PRELIMINARY INVESTIGATION
Council performed this project using a design and construction contract model. A preliminary geotechnical investigation
was performed within Hytlon Moore Park as the park was a former landfill. The investigation was used to define an area
where landfill material was not present. Council relied on previous geotechnical investigation and GIS mapping for the
preliminary investigation into Terrigal CBD.
Throughout the course of this project, excavation revealed acid sulphate soils where the preliminary investigation had
ruled this out. Excavation also found poor ground and unsuitable bearing material to build a storage tank on. The works
were subsequently relocated by approximately 50m. This resulted in time and cost overruns.
A more thorough investigation period over the entirety of both project sites may have saved a significant amount of
project effort and cost, although the majority of the issues arose from a small area of excavation in Terrigal CBD which
may not have been captured with further investigation.
4.2 PROJECT COMMUNICATION
Council developed a communication strategy to disseminate relevant information to the public and internally. Further to
this relevant sections of Council and external stakeholders were invited to workshops on this project. While the strategy
avoided many potential issues for this project, there were some instances of communication breakdown. To resolve
these issues Council’s Asset Management and Project Delivery Sections engaged with other sections of Council through
weekly meetings, scheduled site visits, project inspections and ad hoc meetings to ensure all stakeholders were fully
informed.
5 PROJECT FUTURE
5.1 PROPOSAL FOR PROJECT HANDOVER
Council’s Asset Management & Planning section have been engaging with the ultimate managers of the plants
and facilities to ensure the final outcome for the projects is satisfactory for all stakeholders. Council have
further engaged with the end users of the treated water within Council and external to Council. Formal
engagement activities include:

HAZOP workshop

Detailed Design Reviews

Project Health & Environmental Workshop

Weekly meetings with Council’s Open Space & Leisure
Councils Operations and Maintenance managers have been integral to the project review. Handover will
include:

Training from the Contractor for Council’s Operations and Maintenance staff
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
Update of Council’s HANSEN asset management system

Registration of Work as Executed plans and
5.2 REMAINING TASKS AND OUTSTANDING WORK BEYOND THE FUNDING AGREEMENT
Once Council’s Water & Sewer Operations section takes possession of the plants, both plants shall be fully operational
and testing complete. Council develop a defects list for the contractor which may be only partially complete at the time
of practical completion of the plant. Council hold bank guarantees to be returned to the D&C Contractor Scape
Construction at the completion of warrantee periods.
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Attachment 1 Photographs Terrigal CBD Construction
Terrigal CBD- Treated Water Storage Tank
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Terrigal CBD- Tank Roof Construction
Terrigal CBD- Tank Roof Concrete Pour
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Terrigal CBD Roof Construction
Terrigal CBD Roof Concrete Pour
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Terrigal CBD- Storage Tank Construction
Terrigal CBD Storage Tank roof and pre-load material used to remediate the collapsed section of excavation
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Terrigal CBD Treatement Building
Terrigal CBD Car Park Reinstatement
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Terrigal CBD Remediation
Terrigal CBD Remediation
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Terrigal CBD Remediation
Hylton Moore Park Site Establishment
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Wet Well Shoring with Sandstone
Hylton Moore Park Tank Construction
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Hylton Moore Park Tank Construction
Hylton Moore Park Site Excavation
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Terrigal CBD Treatment Skid
Terrigal CBD Treatment Skid
Dept of the Environment FINAL Report
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Hylton Moore Park Treatment Skid
Hylton Moore Park Treatment Skid
Dept of the Environment FINAL Report
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