New Melbourne Wholesale Market
Stormwater Harvesting and Reuse Project
Final Report
May 2014
Report Clearance
Melbourne Market Stormwater Harvesting and Reuse Grant
Final Report
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CONTENTS
1
EXECUTIVE SUMMARY ........................................................................................................... 4
2
PROJECT OVERVIEW ............................................................................................................. 5
2.1
Project Background ......................................................................................... 5
2.2
Project Objective and Goals ............................................................................ 7
2.3
Project Results................................................................................................. 8
2.4
Project Issues .................................................................................................. 8
2.5
Project Milestones ........................................................................................... 9
Milestone 1 ...................................................................................................... 9
Milestone 2 ...................................................................................................... 9
Milestone 3 .................................................................................................... 10
Milestone 4 .................................................................................................... 10
Milestone 5 .................................................................................................... 10
2.6
3
Project Timelines ........................................................................................... 11
PROJECT STRUCTURE ........................................................................................................ 12
3.1
Project Parties ............................................................................................... 12
3.2
Project Governance ....................................................................................... 12
3.3
Project Hierarchy ........................................................................................... 13
4
PROJECT ASSESSMENT ...................................................................................................... 14
5
LESSONS LEARNT ................................................................................................................ 15
6
PROJECT FINANCE ............................................................................................................... 16
7
CONCLUSION ........................................................................................................................ 17
8
SITE PHOTOS ........................................................................................................................ 18
Melbourne Market Stormwater Harvesting and Reuse Grant
Final Report
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1
EXECUTIVE SUMMARY
The Melbourne Market Stormwater Harvesting and Reuse Grant report has been prepared by Major Projects
Victoria and the City of Whittlesea on behalf of the recipient, the Department of State Development, Business
and Innovation (DSDBI) and in accordance with the funding agreement between DSDBI and the Department
of Sustainability, Environment, Water, Population and Communities.
The final report covers the entire project period and details the conduct, benefits and outcomes of the project
as a whole.
Development of the Melbourne Wholesale Market (MWM) commenced in March 2010. Within this project of
State significance, a stormwater reuse design was integrated that would benefit both the wider community and
users of the MWM.
The Melbourne Market Stormwater Harvesting and Reuse Grant represent a whole of government
coordinated approach to a stormwater harvesting solution. The solution includes two major components:
1. a self-contained stormwater harvesting and reuse system for the core market site
2. an irrigation system utilising excess stormwater from the market site as its source of recycled water
supply.
The new Melbourne Market Stormwater Harvesting and Reuse Grant Works were completed at a total cost of
$10,388,000 (excluding GST).
The MWM achieved practical completion inclusive of the self-contained stormwater harvesting system in
August 2013, and works to the City of Whittlesea’s assets were completed in April 2014.
A short representation of the system operating in its entirety can be viewed by visiting this link.
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2
PROJECT OVERVIEW
2.1
Project Background
The City of Whittlesea, located 20 kilometres north of Melbourne, experienced a significant period of below
average rainfall between 2001 and 2009, during which time the use of potable water for the irrigation of
public amenities such as sports fields and gardens was severely restricted. To safeguard water supplies
into the future, council decided to investigate if alternative water supplies could be used to service the
irrigation requirements of these public amenities. Also during this period, the Victorian State Government
began planning for the construction of the new Melbourne Wholesale Market at Epping.
On announcing the new market, a whole of government approach to stormwater harvesting and reuse was
investigated by the Department of State Development, Business and Innovation (DSDBI) – formerly the
Department of Business and Innovation – and the City of Whittlesea. Through a coordinated approach, a
precinct solution to stormwater harvesting was developed. This solution included two components:
1. a self-contained stormwater harvesting and reuse system for the core market site – undertaken by
DSDBI and its agents
2. an irrigation system utilising excess stormwater from the market site as its source of recycled water
supply – undertaken by the City of Whittlesea and its agents.
The first component, the self-contained core market system, collects rainwater from the roof areas of the
fruit, vegetable and flower markets, drains it to the south-eastern corner of the site, and then stores it in
large underground tanks. To improve the water quality of the rainwater prior to storage, the first flush (1
mm of rainfall) is diverted through a first flush valve-operated diversion system. This first flush water is
then diverted to the civil first flush system for treatment prior to being discharged into the wetlands.
After the first flush is diverted, the cleaner rainwater is discharged straight into the rainwater storage
system, which has a capacity of 1,500,000 litres. Any excess rainwater automatically flows over a weir
directly to the wetlands.
Rainwater is treated on an as-needs basis, and is stored in temporary storage tanks prior to being pumped
into the treated rainwater reticulation system throughout the site for various non-potable uses.
The second component of the stormwater harvesting solution was administered by the City of Whittlesea.
This concept considered using excess stormwater harvested from the MWM site for use by council to
irrigate community facilities, primarily sports fields and some passive open space sites.
It is estimated that 20-30 mega litres from the MWM site combined with stormwater runoff from up-stream
estates will be sufficient to irrigate Whittlesea sports fields and reserves. The surplus water will be
primarily treated (first flush) at the MWM wetland and will be directed to the Carlingford Retarding
Basin/Wetlands, in one of the new housing estates under construction immediately south of the MWM site,
before it can be stored and harvested.
The drainage system within the Carlingford estate allows for the predevelopment flows from the MWM site.
The main stormwater storage system incorporates underground tanks constructed under the future sports
fields within the Mosaic Living estate, which is immediately south of the Carlingford estate.
A locality plan is provided overleaf.
The total project cost for the rainwater harvesting and reuse system described is $10.388 million, with the
internal MMRP component costing $5.988 million and the Mosaic concept costing $4.4 million. The
Australian Government contributed $4.694 million through the National Urban Water and Desalination Plan
towards the project.
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Melbourne Wholesale Markets
Wetlands
Whittlesea Gardens
Mosaic Ovals
RGC Cook Reserve
M31 – Hume Freeway
Edgars Road
M80 – Metropolitan Ring Road
2.2
Project Objective and Goals
The Melbourne Market Relocation Project (MMRP) will see a new state of the art facility being built in
Cooper Street Epping, Victoria. The facility will be home to the MWM, which includes the National Flower
Centre (NFC), administration buildings and future proximity warehousing. The project is of State
significance and will see the existing MWM in Footscray Road West Melbourne relocate to the Epping site
in 2015.
The current MWM accommodates more than 2,500 businesses who procure and sell over two-thirds of all
fruit and vegetables wholesaled in Victoria. Around 1,800 independent greengrocers, supermarkets,
restaurants and food processors buy direct from the MWM. The NFC is a facility for cut flowers and plants,
which wholesales around 40 per cent of the nation's cut flowers.
The Victorian Government announced a budget of approximately $300 million for the MMRP in the
2005-06 Budget. It is envisaged that the market will be open and fully operational in 2015, with
approximately 63 hectares of hardstand and a roof area of approximately 12 hectares. Design and
construction of the MMRP commenced in late 2009, with one of the requirements being that the design
should achieve a minimum four star green star rating and meet the sustainability objectives outlined in the
Development Plan. Consequently, a number of sustainability initiatives are being incorporated into the
design, including water harvesting and reuse, energy efficiency and waste recovery. In 2012, the project
was awarded 4 Star Greenstar by the Green Building Council of Australia.
The key objectives for the project were as follows:
Objective 1 - Rainwater collection and reuse
To collect rainwater from the roof areas of the fruit, vegetable and flower markets (total roof area of
112,700 square metres), drain this rainwater to the south-eastern corner of the site, and then store it in
underground tanks.
The cleaner rainwater (after the first flush has been diverted) is discharged straight into the rainwater
storage system. The rainwater is treated on an as-needs basis, and is stored in temporary storage tanks
prior to being pumped into the treated rainwater reticulation system throughout the site for various nonpotable water uses such as:





toilet/urinal flushing
flower buckets top up
trading stores floor wash down (manual hose down)
waste/recycling station floor wash down (manual hose down)
general floor wash down (vacuum truck) and irrigation.
Objective 2 - Sports field irrigation
Reduce the demand on potable water by extracting excess rainwater from site and feed it through
council's drainage infrastructure into storage tanks adjacent to the sporting ovals. Use stored water to
irrigate local sporting fields.
Validate the concept study to ensure there is sufficient stormwater available from the market site while
maintaining environmental flows
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2.3
Project Results
The scheme has resulted in:






2.4
68,000,000 litres of Victoria’s drinking water being saved each year
a vastly improved amenity for the users of the sporting fields
reduction in the impact of urban runoff on water quality
an increase in public awareness regarding opportunities for stormwater management
securing water supplies without increasing greenhouse emissions
access to non-potable water at the new MWM for the thousands of traders who will use the site on a
daily basis.
Project Issues
A number of constraints were experienced by the wider project team during the delivery of a number of
milestones. These constraints have been summarised below.
Earth conditions – The City of Whittlesea experienced delays with its contractor due to the ground conditions
at Mosaic Gardens, where large quantities of rock reduced the contractor’s ability to deliver the underground
storage tanks on program.
Ground Water – To remove groundwater during excavation, four dewatering pumps were installed at the
corners of the excavation site. In addition, channels were dug in the base of the excavation site, laid with
perforated piping and backfilled with scoria to facilitate water removal. Once the excavated site was clear of
free water, a concrete blinding layer 150 mm thick was poured to create a dry surface for construction of the
concrete slab. These works were not included in the original design and added significantly to the cost of the
project. Even after the blinding layer had set, several water springs and soft patches were present in the
blinding layer.
Specialist componentry – sourced from Europe, this item failed to arrive in a timely manner and resulted in a
later delivery of Milestone 4 than originally envisaged. While this aspect was not originally on the critical path,
the late delivery shifted this scope of work to make it of primary importance for the successful delivery of the
milestone.
Design – For each component installed, significant and detailed design was required prior to the
commencement of on-site works. This process would then lead into a tender phase, which was required to
follow relevant council and governmental policies and procedures when tendering to the open market.
Modifications to design drawings were also required based on groundwater levels at Mosaic Ovals and on
Melbourne Water requirements.
Stakeholders – The large number of stakeholders directly and indirectly involved in the project added
complexity and contributed to project delays. In addition, more than three contractors were employed by
council to complete the works at Mosaic Ovals, Whittlesea Gardens, RGC Cook Reserve and the Melbourne
Market site. Contractors employed at the Melbourne Market site were engaged independently to construct the
rising main and wet well adjacent to the Melbourne Market wetlands. Finally, signed access permits were
obtained with two developers working in the area to permit council to complete construction of rising mains
and stormwater pipe infrastructure on its land.
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2.5
Project Milestones
The following details the milestones as set out in section A.2.10 of the Grant Agreement. Additional
commentary is provided to detail the extent of works undertaken by Major Projects Victoria and the City of
Whittlesea.
Milestone 1


Completion of concept design and options assessment.
Completion of detailed design.
Milestone 1 commenced with the concept and detailed design of the in-ground rainwater harvesting
drainage system. Once the design was approved by Major Projects Victoria, Lend Lease undertook the
works. In addition to the excavation of trenches and pits for the in-ground rainwater collection system,
installation of pipe of up to 1,200 mm in diameter and pits around the market site to collect the rainwater
was undertaken. These pipes shift the collected rainfall into the underground storage units.
As required within this milestone, the City of Whittlesea completed the detailed design of the Melbourne
Market stormwater take-off and the Mosaic stormwater harvesting. The design detailed water storage, pipe
works, pump stations, electrical work, rising mains and control system. In addition, the City of Whittlesea
undertook a review of the upstream catchment data and system hydraulic controls associated with the
Melbourne Market to determine the options for stormwater harvesting. This review included an
assessment of the availability of stormwater for harvesting and reuse in accordance with Australian
Guidelines for water, and a further review of the potential for treatment within the existing system upstream
of Mosaic water storage location stormwater runoff. A high level analysis of the modified stormwater
harvesting concept using MUSIC software to validate the concept was also undertaken.
In addition to the planning noted above, the City of Whittlesea constructed a 100 mm recycled water pipe
from the Mosaic development site to Whittlesea Gardens.
Milestone 2

Completion of construction of diversion/s to Carlingford Estate.
The City of Whittlesea completed the installation of a rising main at the market site. This infrastructure will
assist the movement of water into Melbourne Water’s system which in turn continues to the Carlingford
Estate. A pump well and two 17 kW pump units have been delivered and will drive the movement of water.
Lend Lease continued with in-ground services with the installation of four underground storage tanks. In
combination with filtration and water treatment, these tanks will store, and then supply as required, water
back into the market. The non-potable water supplied will be used for flushing toilets, washing down floors
and general bucket top-up. The system employs first-flush principles where the first 1 mm of rainfall is
diverted prior to rainwater being filtered, treated and stored. The total combined storage volume of the
tanks equates to 1,500,000 litres. A time-lapse video of the installation can be viewed here.
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Milestone 3

Completion of MWM project finalisation
Confirmation of this milestone was provided in the submission of finalised Operation and Maintenance
manuals. Lend Lease, through its subcontractors and design consultants, provided the State with the
details required to maintain and operate the rainwater harvesting system. Literature covering pipework,
pumps, tanks, controls systems and wiring diagrams has been provided in detail, affording the Melbourne
Market Authority confidence in the system’s ongoing operation.
Milestone 4

Completion of oval tender and construction.
Mosaic Living is a new residential development in the centre of Lalor. Forming a cornerstone of this
development is the inclusion of two full sized ovals bound by Mosaic Drive and Gillwell Road. Originally a
greenfield site, the City of Whittlesea (through the use of a number of subcontracting parties) has
advanced construction of the ovals with extensive site levelling, water storage and an integrated irrigation
system.
A major component of this work was the excavation and installation of 3,000,000 litre underground storage
tanks. These tanks were made up of 250 precast concrete modules, each weighing 7 tonnes and sealed
at the base and top to be water tight.
Encircling the ovals is a new ring main with lateral pipework to supply the inner areas of the oval with
water. This system is operated via the Irrinet Control System which forms part of Milestone 5.
Milestone 5

Completion of the City of Whittlesea Project – including telemetry, water testing, approvals, commissioning,
handover and finalisation.
The Irrinet Control System encompasses hardware and infrastructure that provides remote telemetry for
the operation of the newly installed assets. While the system was installed during other milestones, it was
not until the final commissioning took place that this milestone could be considered to be achieved. The
installed assets have now been handed over to the City of Whittlesea for ongoing operations and
maintenance.
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2.6
Project Timelines
Milestone 1 –
Detailed Design
Milestone 2 –
Carlingford diversion
and MWM in-ground
tanks
Milestone 3 –
MWM project
finalisation
Milestone 4 –
Mosaic oval tender
& construction
Milestone 5 –
Commissioning and
Final Report
2010
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2012
2013
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2014
3
PROJECT STRUCTURE
3.1
Project Parties
The following is a description of the key organisations with an interest in the project:
Organisation
Role / Responsibility
Department of State Development, Business and Innovation
(DSDBI)
City of Whittlesea
Melbourne Market Authority
Major Projects Victoria
Lend Lease Project Management and Construction
Fortunato, Total Eden, Artesian etc
3.2
Funding Recipient
Owner/Operator
MWM Operator
Delivery Agent on behalf of DSDBI
MWM Head Contractor
City of Whittlesea Contractors
Project Governance
General responsibility for decisions with respect to the project and any project changes sat with
designated groups with formal delegations.
To ensure that all groups with authority or interest with respect to the project had adequate input, the
following groups operated for the duration of the project:

Project Steering Committee (PSC)

Project Working Group (PWG)
Committee Membership
Function
Meeting Frequency
Project
Steering
Committee
(PSC)
The role of the Steering Committee was to
provide advice and guidance to the Recipient in
its performance of the Project. The purpose of
the Steering Committee was to enable the
members and observers of the Steering
Committee to obtain sufficient information on
the progress of the Projects, and to assist the
Recipient to ensure that strategies to address
potential threats to the project’s success were
identified, costed and approved, and that the
threats were regularly re-assessed.
This core project team had responsibility for the
day to day work of the project in accordance
with the direction of the PSC.
The Steering
Committee was
required to conduct at
least four meetings
each Financial Year
during the Project
Period
Major Projects Victoria
Project Manager and
Project Director
City of Whittlesea Project
Manager and Project
Director
DSDBI Representative
Project
Working
Group
(PWG)
Major Projects Victoria
Project Manager
Weekly/Fortnightly
City of Whittlesea Project
Manager
Lend Lease
Representative
City of Whittlesea
Consultant
DSDBI Representative
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3.3
Project Hierarchy
National Urban Water & Desalination
Plan
Director
Project Steering Committee
Major Projects Victoria Project Manager
City of Whittlesea Project Manager
DSDBI Representative
Funding Recipient
DSDBI
City of Whittlesea - Chief Executive Officer
Project Working Group Major Projects
Victoria Project Manager
City of Whittlesea Project Manager
DSDBI Representative
Lend Lease Representative
City of Whittlesea Consultant
City of Whittlesea Project Team Project
Director
Major Projects Victoria Project Team
Project Manager
Project Manager
Sustainability Officer
Project Support Officer
Project Director
Consultant Team
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4
PROJECT ASSESSMENT
The project is expected to ultimately save more than 67.5 ML of drinking water every year. Based on current
potable water costs of approximately $2,000 per ML, there are potential savings of $135,000 per year. Future
rising main extensions could save an additional 40 ML of potable water, resulting in a saving of an additional
$80,000 per year. The projects, divided into a number of milestones, have all been successfully delivered. The
following describes in detail how the functional operation of the stormwater harvesting project is undertaken and
how water is harvested from the Melbourne Market site, stored and used for the irrigation of local public
amenities.
Melbourne Market
During rainfall events at the Melbourne Market site, water from the hardstand area is directed to the local
wetlands (1.2 Ha surface area) for treatment and storage. Excess water exits from the east of the wetlands and
is conveyed to a wet well and also to Edgars Creek. Two 17 kW pumps installed in the wet well connected to a
rising main (800 metre length, 225 mm internal diameter) pump water west until it discharges into a section of
stormwater pipe at the north end of Gillwell Street Lalor. Water is pumped at 50 litres per second using one
active pump, with a second pump acting as a backup. The energy in the pumped water is dissipated in a
specially constructed ’de-energiser pit’ as it enters the stormwater pipe.
City of Whittlesea
The stormwater then travels south downstream by gravity along a 400 metre length of stormwater pipe.
Because the stormwater pumped from the Melbourne Market wetlands travels through stormwater pipes in a
residential catchment, the water flow can be augmented by additional stormwater flows from surrounding
houses. Rainfall modelling shows that this added contribution can double the amount of stormwater harvested
by the project. Hydraulic calculations verified that the existing stormwater infrastructure could accommodate
residential catchment stormwater flows and the additional water flows (50 litres per second) from the Melbourne
Market site.
The water passes through a small wetland (1,400 square metres surface area) and a gross pollutant trap (GPT)
which removes pollutants and litter introduced from the residential catchment from the stormwater. Water
leaves the small wetland and continues south for 300 metres along existing stormwater pipes until it reaches a
modified stormwater pit (termed pit 14) adjacent to the future site of the Mosaic Ovals (Figure 2). At pit 14,
water is diverted through another GPT and enters the north-east corner of the 3 ML underground concrete
storage tank via a 300 mm diameter pipe. An automated gate valve controls entry of water into the tank. The
gate valve is located after the GPT to minimise the risk of any potential interference to the closure mechanism
from large items of rubbish. The logic controlling the operation of the gate valve is described later.
The internal space of the underground tank is approximately 50 metres (length) x 47 metres (width) x 1.5
metres (height). The top of the tank is covered by up to 3 metres of compacted earth. Most of the tank is
immediately below the eastern sports field. A wet well is installed to the north of the tank connected by a pipe
300 mm in diameter. Water drawn from the wet well is used to irrigate the two sports fields at Mosaic Ovals.
The irrigation pump is located at ground level in a pump shed.
Two 6 kW pumps installed in the Mosaic Ovals’ wet well pump water via a rising main (100 mm internal
diameter) to three above ground storage tanks (three 85 kL tanks) at Whittlesea Gardens. Only one pump is
active at any time. Water is pumped at 7 litres per second. The pumps provide irrigation water for Whittlesea
Gardens and two sports fields at RGC Cook Reserve. A pumping shed adjacent to the above ground storage
tanks at Whittlesea Gardens delivers the water to the irrigation system at Whittlesea Gardens and to the
irrigation system at RGC Cook Reserve 500 metres away via a 100 mm internal diameter rising main.
The storage tanks at Whittlesea Gardens are required to provide sufficient feed water for the on-site irrigation
pump. They are filled slowly during the day and can store several days of irrigation supply for the sports fields. If
they empty of water they can be topped up with potable water from a local mains water supply.
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5
LESSONS LEARNT
It is undesirable to enter into a funding agreement which is fixed and based on costs estimated from a project
concept only. The scope may change during the design phase and the cost may change considerably.
Geotechnical investigation should be more thorough within the tank excavation site. Groundwater was
encountered which was beyond what was anticipated from the report. Subsequently, the Contract specification
failed to address groundwater adequately. The groundwater and its impact on the tank base became a costly
variation (unfunded) managed as a ‘latent’ condition.
Management of program across all stakeholders is pivotal to a successful outcome. A number of stakeholders
did not deliver scopes of work in the expected timeframe which hampered the ability to deliver the entire
program of works as originally specified.
An alternative design may have included a large (1ML) above-ground tank adjacent to the Melbourne Markets
wetlands or at a suitable collection point on the Melbourne Markets site. Above-ground tanks are a cost
effective solution to water storage (approximately 1/10th of the cost of an below-ground tank). Having an
additional collection point could help to service additional sports fields to the east of Edgars Creek and send a
positive message to other industries in the locality that they too can harvest roof water and contribute to the
irrigation of sports fields or environmental flows in local waterways.
Engaging an engineering team that is multi-discipline can assist with resolving the complex design issues and
coordination on site.
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6
PROJECT FINANCE
The original project budget was $9.388 million with delivery resulting in an overall cost of $10.388 million.
The MWM component was originally valued at $5.988 million and the Mosaic concept at $3.4 million. The
Mosaic Concept however, was delivered for $4.4 million. The additional costs were attributed to excessive
dewatering of the tank excavation site at Mosaic Gardens and the estimates for the pipe and wet-well on the
markets site being considerable less than what the final contract was awarded for.
The Australian Government contributed $4.694 million through the National Urban Water and Desalination Plan
towards the project
A detailed cost summary is provided in the auditor’s report.
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7
CONCLUSION
With more than 112,000 square metres of roofing and 63 hectares of hardstand capturing rainwater, the
integration of a treated rainwater facility would not have been possible without a grant from and the
involvement of the Australian Government.
With the operation of the Melbourne Market anticipated to commence shortly, access to recycled nonpotable water to all tenants and operators is seen as a valuable addition to the new facility. Providing
access to recycled water is an excellent green solution given the quantum of people that will utilise this
new space for trade.
Users of City of Whittlesea’s parks and recreations areas are the major winners with the completion of
these works. Through the use of excess stormwater, irrigation will be available to a number of sporting
ovals, benefitting the community with year round irrigated facilities.
The integration of these works into a project of State significance has clearly demonstrated that substantial
benefits to the community can be gained through intelligent design. The Australian Government is to be
applauded for enabling the delivery of a project that will not only benefit the Melbourne Market but the
wider City of Whittlesea community.
Three levels of government have worked closely together to provide immense benefit to the wider
community by delivering a system that is unprecedented.
The City of Whittlesea and DSDBI thank the Australian Government for its Water for the Future grant and
for its involvement in managing the funding and facilitation of this project during construction of the new
Melbourne Market.
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8
SITE PHOTOS
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Image 1 - Milestone 1 – Melbourne Market - Construction of rainwater drainage system
Image 2 – Milestone 1 – Melbourne Market - Construction of rainwater drainage system
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Image 3 - Milestone 2 – Melbourne Market - Pipework between pits
Image 4 - Milestone 2 – Melbourne Market - Pipework between pits
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Image 5 – Milestone 2 - Melbourne Market - Tank installation
Image 6 – Milestone 2 - Melbourne Market - Tank installation
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Image 7 - Completed wetlands
Image 8 - Completed wetlands
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Image 9 - Aerial view of completed treated rainwater plant
Image 10 - Aerial view of completed Melbourne Market
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Image 11 - Carlingford Estate/Gilwell Park
Image 12 - Milestone 4 - Mosaic Ovals - 3 ML storage tanks
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Image 13 - Milestone 4 - Mosaic Ovals - 3 ML storage tanks
Image 14 - Milestone 4 - Mosaic Ovals - 3 ML storage tanks
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Image 15 - Milestone 4 - Mosaic Ovals - Completed
Image 16 - Milestone 4 - Mosaic Ovals - Completed
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Image 17 – Milestone 5 – Irrinet Equipment / Electrical Cabinet
Image 18 – Milestone 5 - Pump drives
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Image 19 - Melbourne Market - Wet well
Image 20 - Melbourne Market - Wet well pumps
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Image 21 - Whittlesea Gardens - Storage tanks
Image 22 - Whittlesea Gardens - Irrinet (telemetry) equipment
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