SIA NSW Award Nomination: Excellence in Asset Management€¦ · SIA NSW Award Nomination:...

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SIA NSW Award Nomination: Excellence in Asset Management This Award nomination seeks recognition for excellence in the management of stormwater infrastructure in order to encourage and promote improved asset management planning and practices. This nomination refers to A plan that set out approaches and strategies to manage stormwater assets A program that undertakes management of stormwater infrastructure, including maintenance or renewal programs A project that employ innovative methods or approaches to asset management. We have remained within allocated word limits, excluding Tables and captions. Project title: Centennial Parklands Ponds Management Plan 2012 Organisations and contact: Centennial Park & Moore Park Trust and Storm Consulting Contact details: Mr Mal Brown, Storm Consulting, 9499 4333, [email protected] . Mr Steve Nichols, Centennial Park & Moore Park Trust, 9339 6623, [email protected] Category entered: Asset Management Geographic coverage/location of project The Centennial Park Ponds are “green” stormwater assets located 2km to the southeast of Sydney CBD spanning the suburbs of Moore Park, Centennial Park, Paddington, Queens Park and Kensington (Figure 1). The projects relates to the 12 ponds in the Centennial Parklands, and their catchment (Figure 2).

Transcript of SIA NSW Award Nomination: Excellence in Asset Management€¦ · SIA NSW Award Nomination:...

Page 1: SIA NSW Award Nomination: Excellence in Asset Management€¦ · SIA NSW Award Nomination: Excellence in Asset Management ... the management objective for the whole pond ... of the

SIA NSW Award Nomination: Excellence in Asset Management This Award nomination seeks recognition for excellence in the management of stormwater infrastructure in order to encourage and promote improved asset management planning and practices.

This nomination refers to

A plan that set out approaches and strategies to manage stormwater assets A program that undertakes management of stormwater infrastructure, including

maintenance or renewal programs A project that employ innovative methods or approaches to asset management.

We have remained within allocated word limits, excluding Tables and captions.

Project title: Centennial Parklands Ponds Management Plan 2012

Organisations and contact: Centennial Park & Moore Park Trust and Storm Consulting

Contact details:

Mr Mal Brown, Storm Consulting, 9499 4333, [email protected] .

Mr Steve Nichols, Centennial Park & Moore Park Trust, 9339 6623,

[email protected]

Category entered: Asset Management

Geographic coverage/location of project

The Centennial Park Ponds are “green” stormwater assets located 2km to the southeast

of Sydney CBD spanning the suburbs of Moore Park, Centennial Park, Paddington,

Queens Park and Kensington (Figure 1). The projects relates to the 12 ponds in the

Centennial Parklands, and their catchment (Figure 2).

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The ponds collectively cover an area of 26Ha of stormwater assets and their

configuration and function in relation to stormwater flow is shown in Figure 3.

Figure 1: Centennial Parklands showing west to east Moore Park, Centennial Park and Queens Park

Figure 2: Centennial Parklands ponds catchment context showing approximate catchment boundary and flow paths

Outflow to Botany Wetlands and Botany Bay

SCG & SFS

Bondi Junction

Paddington

Randwick

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Figure 3: Pond configuration and function in relation to stormwater

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Project timeframe, including a statement confirming that the project has

been finished after 30th June, 2011

The Centennial Parklands Ponds Plan of Management and associated works were

completed at varying intervals throughout the period 30th June 2011 - 30th June 2012.

Overview/description of the project including objectives and outcomes

(maximum 200 words) which is suitable for use in a media release

This project is about provision of a Ponds Management Plan 2012 for the 12 Centennial

Park ponds green infrastructure stormwater assets.

As the catchments of the ponds have developed and become increasingly urbanised, the

ponds have acted as the receiving waters for stormwater pollutants.

In the 1990s, pond water quality deteriorated such that blue-green algal blooms

occurred over an extended period. This was symptomatic of the pond system being

substantially degraded.

A previous Ponds Restoration Strategy 1997 detailed pond restoration works and

maintenance activities with two underlying principles - wetland rehabilitation and

maintenance in perpetuity. The same principles are relevant today.

The objective of this Ponds Management Plan 2012 is to provide a planning level

document that will guide pond restoration works and maintenance activities over the

period 2012-2022. Consistent with this, the management objective for the whole pond

system is create a sustainable system and to maintain it in this state in perpetuity.

The only way to achieve this is for the ponds to be physically and ecologically robust and

to be provided with continuing maintenance. The rehabilitation recommendations are

tailored to water quality issues and problems, while also being aware of the constraints of

working within the Centennial Parkland environment.

Park volunteers proudly showing off their reed bed planting efforts behind

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Identification of stormwater benefits provided by the project.

The Ponds Management Plan 2012 is a holistic and comprehensive planning

document that addresses stormwater benefits, as follows: Water quality – the main aim of the Ponds Management Plan is to improve

water quality in the ponds system. This is achieved by treating each stormwater

inflow to the ponds using GPTs, stilling basins, reed beds, etc. There is also a

maintenance framework established which provides for ongoing removal of

collected pollutants. By managing pollutant inputs, the ponds will be more

resilient and robust in terms of internal water quality processes, and a range of

ecosystem and amenity benefits are conferred.

Stormwater reuse – stormwater from the ponds is reused to irrigate 50Ha open

space and playing fields around the parklands. Maintaining the integrity of the

irrigation infrastructure and the water quality in the ponds was a major outcome

of the project.

Ecosystem health – by retaining and removing pollutants from the pond system,

the aquatic environments in the ponds will be able to support healthier

ecosystems. Noxious aquatic weeds will be removed systematically from the

ponds (they cover an extensive area) and macrophytes are proposed in various

ponds to improve biodiversity and provide habitat. Finally, European carp will be

removed systematically from the pond system and this will provide a range of

benefits including water quality improvement and less predation of native fauna

species.

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Flooding and drainage control – the function of the ponds to provide a key

flood mitigation role in the catchment (protecting the low-lying areas in

Kensington, Kingsford, Mascot and Botany) is recognized and embedded in the

Ponds Management Plan. Hydraulic assessments were undertaken to ensure

proposed GPTs would not cause afflux in upstream residential areas.

Public health and safety – public health and safety is critically important and

features inherently in the proposed pond re-designs. A balance is struck between

attracting people to pond edges and their safety once they are there. Often

landscaping is proposed to provide separation from pond edges and open water.

The ponds will be safer for the public once all the works are complete. In

addition, water quality will be improved and so secondary contact recreation in

the ponds will be enhanced with less risk of disease.

Placemaking/amenity - given that the Centennial Parklands is the most visited

parkland in Australia, they already represent a major destination. The parklands

hold a distinctive and special place in Australian history and culture. The

parklands supported Sydney’s second water supply and on 1 January 1901,

Centennial Park became the focus of the nation as the site of the inauguration of

the Australian Federation. The ponds are one of the most popular features of the

parklands and the public is very keen to see them free from pollution (as

determined through user surveys). Therefore improved ponds contributes to

improved amenity within the parkland and this in turn consolidates the iconic

placemaking nature of the Parklands.

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Adaptation to climate change – a major driver for the project is to manage

pond water quality and amenity during periods of drought. In the early to mid

1990s the pond system suffered from extensive and persistent algal blooms

caused by a lack of flows (stagnation) in combination with poorly treated inflows

and poor water circulation. The works proposed in the Ponds Management Plan

specifically address the deterioration in water quality and pond amenity arising

from stagnant conditions.

Description of how the project meets/demonstrates each of the judging criteria

for the nominated category (max 500 words/criterion) 1. The project will provide significant benefits.

o Improved governance and accountability o Enhanced service management and customer satisfaction o Improved financial efficiency o More sustainable decisions (International Infrastructure Management Manual, 2006)

The Centennial Parklands is managed by the Centennial Park and Moor Park Trust (the Trust)

which is a NSW Government agency under the Department of Premier and Cabinet. The

Trust is directly responsible to the Minister for the Environment.

Specifically, the Trust must maintain and improve Trust lands and ensure environmental

protection. The Ponds Management Plan 2012 facilitates these outcomes. The objective of

the Plan is to provide Parklands managers with a planning level document that will guide

pond restoration works and maintenance activities over the period 2012-2022.

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Improved levels of service management guide each and every activity by the parkland

managers. The Trust is accountable to its visitors and customer feedback is actively sought

and freely given. Of critical importance to parkland users is the ponds, and the pollution of

the Park’s waterways is of utmost concern to visitors and as they rank cleanliness of the

ponds as a high priority. By facilitating the removal of pollution from the ponds and

improving their water quality, amenity and ecology, the Ponds Management Plan responds

to visitor values.

Without the Ponds Management Plan in place, stormwater pollutants were able to freely

enter the ponds and the Trust retrieved them when they had accumulated. This constituted

an unsustainable, inefficient and expensive way to manage pollutants. The measures

proposed in the Plan provide a contemporary and effective way of preventing the pollutants

from entering the ponds. Life cycle costing was used to inform the selection of the specific

pollution trapping strategies in each pond. The cost of removing pollutants from GPTs is far

less than that of retrieving them after they have been widely distributed in a pond.

The measures proposed in the Ponds management Plan 2012 provide a range of additional

outcomes including improving pond bank stability, removing aquatic weeds and European

Carp, etc. The combined effect of these strategies is to enhance not only the quality of the

ponds, but their asset life as well.

The Ponds Management Plan 2012 includes a maintenance framework for the ponds and

associated assets to maintain their condition and function in perpetuity.

The end result of the Ponds Management Plan 2012 is a document that supports and

enhances existing governance and accountability, provides enhanced levels of service and

customer satisfaction and which is proven to be financially prudent. It is a Plan based on

delivering sustainable outcomes from pond stormwater assets.

2. The project promotes or employs processes or practices that prolong the life cycle of

stormwater systems and ensure they meet required levels of service.

In this section we show how the Ponds Management Plan was strategically developed to

prolong the life of the ponds stormwater assets, and to improve their levels of service.

Note that the water quality issues with the ponds emerged in the early 1990s and there has

been a continuum of plans/strategies and works since that time. However, in this award

nomination we focus on the pond conditions, objectives, strategies and works that are

included in the Ponds Management Plan 2012 only.

The following issues are identified as being relevant to the pond stormwater assets:

the pond system has a long hydraulic retention time meaning water can stagnate;

pond stormwater inflows allow pollutants to spread, making retrieval impractical;

some ponds short circuit creating stagnant zones;

pond outflows do not allow for water level control;

pond sediments are nutrient-enriched and unstable making them susceptible to re-

suspension;

the ponds have extensive weed macrophytes as opposed to desirable reeds

Carp feeding behaviour constantly churns up sediments and re-releases nutrients.

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In response, management objectives were set for each pond (Table 1).

Table 1: Management objectives for the Centennial Park pond system.

Pond Stormwater

inflow

treatment,

GPTs and

stilling basins

Irrigation

extraction

for the

Parklands

Fine particle

filtering, after

gross

pollutants

are removed

Aquatic

weed

removal,

extensive

Nymphaea

spp

Oxy-

genation of

flows, for

ponds that

are fed by

low O2

springs

1.Model Yacht

2. Fly Casting

3. Musgrave

4. One More Shot

5. Willow

6. Duck

7. Randwick

8. Lily

9. Busbys

10.Kensington East

11. Kensington West

12. Kippax

From this a summary of pond rehabilitation works/practices/strategies was developed (Table

2).

Table 2. Summary of mgt recommendations & related works & practices for CP Ponds.

Management

recommendation

Works, practices and strategies

Pond investigations Bathymetry, Hydraulic behaviour analysis, Water quality study

Pond water oxygenation options

Sediment disposal management plan

Catchment &

stakeholder Mgt

Pond Water Quality Mgt Committee with all catchment stakeholders

Pollution Incident Management Plan

Gross pollutant traps

at pond inflows

Look to improve performance of existing GPT at Musgrave Pond

Install a sympathetic GPT design at Kensington Pond East

Continue to maintain all GPTs /stilling basins at regular intervals

Sediment

accumulation zones

Accumulated sediments periodically monitored (every 5-10 yrs) and

removed from relevant Ponds

Reed beds Reed beds are a feature of the designs in Model Yacht, Fly Casting,

Randwick and Kensington Pond West.

Stagnant zone

elimination

Flow diversions (submerged banks) are in place in several Ponds

A stagnant zone in Kensington Pond West is to be replaced with a

shallow marsh wetland.

Water level control Install water level control weirs to all ponds

Operate all weirs when undertaking works or maintenance activities

Pond oxygenation Provide flow aeration system in Lily and Duck Ponds

Modifications within

ponds

Reduce carp numbers by Electrofishing in Ponds, continue Carp Program

Remove Nymphaea spp. water weeds in Ponds

Restoration of pond

edges

A hierarchy of bank/edge stabilisation measures have been developed &

shall be applied to Duck, Randwick, Busbys and Kensington Pond West

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From this, strategies were prepared for each pond – Kensington Pond west used as an

example here (Error! Reference source not found.) and view in association with Figure 4.

Table 3: Example management recommendations for Kensington Pond west

Problem Management

recommendations Rationale

At the entrance of

channel inflow from

Busbys and Randwick

Ponds, large amounts

of organic debris and

sand have

accumulated.

Install a stilling basin at

the inlet to Kensington

Pond. Provide

maintenance access

ramp. Once stilling

basin is installed,

remove existing net

pollution trap from the

channel.

COMPLETED 2012

While the net traps are effective at

collecting debris, they also fill and

clog quickly.

Sediment builds up in the channel

behind the net trap which has no

effective means of removal in the

narrow and constrained channel.

The recommendation to create a

specifically designed accumulation

area at the inflow to the pond with

an access ramp will facilitate

routine cleaning.

Western inflow

accumulates sediment

and litter.

Install a CDS GPT.

Provide maintenance

access for routine

cleaning. Remove

existing net pollution

trap.

COMPLETED 2012

The inflow requires a gross

pollutant trapping strategy to catch

all particles down to coarse sand

size.

ii) Nymphaea spp. is

covering parts of the

pond area

Remove aquatic weed

(Nymphaea spp) from

the ponds.

COMPLETED 2012

Nymphaea is an aquatic weed

species that clumps, spreads and

periodically dies off in parts

providing a high organic load to

the ponds. It should be removed

and its re-growth should be

controlled through ongoing

removal.

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Figure 4. Example of pond works and strategies in Kensington Ponds – Concept Design

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The actions comprise each of the following:

Ongoing and improved liaison with catchment stakeholders

Investigations to fill information gaps

Capital works to implement pond rehabilitation actions

Recurrent maintenance activities, e.g. ongoing removal of collected pollutants,

aquatic weed, carp, etc.

Monitoring and review points

Inlet to Kensington Pond east before works showing

sediment accumulation, willows and poor visual

amenity,

Kensington Pond east after works, showing weed

removal, bank stabilisation, willow removal,

revegetation

Kensington Pond east before weed removal Weed removal process in pond, includes

roots/rhizomes on bed

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LHS: Minor inlet to Kensington Pond east showing sediment and debris deposition moving into pond

RHS: stilling basin at same inlet with access ramp to facilitate removal of accumulated sediment/debris

Sediment removed from pond for drying, before

disposal.

Ugly net traps were replaced by a CDS unit

It can be seen in the discussion provided above that the derivation of actions has been

strategically developed to respond to identified problems in the ponds, and which also

respond to the management objectives set for each pond. In other words, the

recommendations are tailored to specifically increase the life and service levels (customer

satisfaction) of the pond stormwater assets.

3. The project demonstrates excellence in consideration of economic, environmental and social

factors. Weight 10%

Economic

Full costing was undertaken for investigations, works and strategies and for all maintenance activities.

Options were considered for gross pollution trapping, e.g. comparative analysis of litter net traps vs. installation of CDS GPT at major stormwater inlets. Capital and operational costs were used to determine life cycle costs.

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Cost saving measures were identified for further consideration. As tipping fees are unaffordable in the medium-long term, it is imperative to have an option of disposing removed sediments and organic debris from the ponds within the Parklands. Classification of the waste occurred and a decision was made to dispose of it in landfill for works completed in 2011-12. Instead it is proposed to process the material and recycle it as compost to avoid tipping fees, to treat the material as a resource and to reduce the costs of imported mulches.

Options were identified that if implemented in one pond, they would provide benefits to several others concurrently. An example is Lily Pond which is fed by de-oxygenated spring water. This pond flows into three other downstream ponds and so it is essential to improve this water quality by oxygenating it. This will prevent the establishment of blue-green algal blooms by removing conditions which favour them from the outset. In this manner, five ponds benefit from the treatment of one.

Environmental

The presence of extensive blue-green algal blooms over several years of drought was a symptom of pond environmental decline. Most of the measures proposed are targeted at reducing pollution inputs to the ponds such that conditions which give rise to algal blooms are minimised.

The noxious weed Nymphaea spp. was starting to dominate the surface area of several of the lower ponds in the system. It spreads rapidly in spring/summer to increase areal coverage. The dying off plants from winter consume oxygen from the water making it putrid. The weed has been eradicated from two of the ponds with others to follow.

European carp infest the pond system and they continually cycle nutrients into the pond water columns through their feeding habits. They also eat or outcompete native aquatic fauna species. It is proposed to eradicate them.

The management of carp and aquatic weeds require continual monitoring and maintenance effort.

Social

The predominant social outcome of the project is in community education and awareness of the impacts of the external community to the ponds. A greater understanding of the ponds

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as a connected part of the stormwater system within the eastern suburbs catchment will assist in reducing complaints from park visitors about pollution in ponds, as well as raised awareness for improved behaviour of responsible litter and pollutant management.

The community will be the recipients of improved pond amenity. The Trust has an extensive

program of community outreach, including: Streamwatch, work with local schools, volunteers

and other groups.

A key feature of the recommendations is the preservation of the cultural values associated

with the ponds, including heritage items. All works were chosen to protect or enhance these

values.

4. The project involved meaningful collaboration with stakeholders. Weight 10%

The Ponds Management Plan 2012 and components of it were prepared in consultation with

external and internal stakeholders. External stakeholders included catchment land managers

Waverley Council and the City of Sydney Council officers and they provided information and

review.

Project partners included the Sydney Metro Catchment Management Authority, the NSW

Environmental Trust and Waverley Council as providers of funding to implement some

works.

The main stakeholders were Trust staff. An Internal Working Group of staff from across

Management, Operations and Planning staff was established and the Plan was prepared in

consultation with them. Three review meetings were convened for providing feedback into

the Plan.

The work of Storm Consulting as specialist best practice design engineers was independently

peer reviewed by consultants e-quatica.

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Summary of why the project is an exemplar of excellence in the nominated

category (max 500 words)

The Centennial Parklands are an iconic destination in Eastern Sydney. The parklands

represent 365Ha of green infrastructure are visited by over 3 million people per annum. The

Centennial Park ponds comprise 12 ornamental ponds covering a combined area of 26Ha

and these represent stormwater assets that require ongoing management.

The Parklands are a major attractor in Sydney with high visitation and the ponds are one of

the most popular features of the Parklands. It is imperative to maintain customer satisfaction

and service levels that are generated from and inherent within the ponds. Visitors to the

Parklands want to see the ponds clean and healthy and supporting biodiverse ecosystems.

They want to play at the water’s edge and be safe and healthy when they do so.

However, because the ponds are subject to major stormwater inflows from large contributing

catchments, they are also sinks for pollution. In the past, this uncontrolled pollution and the

long time that water can spend in the pond system can cause stagnation and give rise to

blue-green algal blooms. This causes ponds to turn green with floating scums that rot and

stink. Therefore there is a history of rapid pond water quality degradation, especially during

dry periods. This creates a need to act with proactive interventions that will prevent this

system decline such that the pond system can maintain its levels of service to park visitors.

With such a large and complex pond system to manage, a comprehensive and strategic

approach is required that responds to the many often competing issues and constraints of

working in the Parklands. The Plan developed for the pond system must not only provide

water quality improvement, it must provide a broad range of benefits and not cause conflict

with the Heritage elements of the Parklands, as well as being acceptable to visitors. The

Ponds Management Plan 2012 delivers all this and more.

The strategic nature of the Plan is rooted in the principles and approaches adopted,

including catchment analysis, stakeholder collaboration, system-wide and individual pond

objectives that align. The actions that have been proposed as a result of this are targeted

specifically at solving specific water quality problems and priority is assigned according to

water quality benefit. There is a recognition that pond water quality is fundamental to their

broader function in the Parklands.

The Ponds Management Plan 2012 provides a balance of strategies to ensure long term

success in management of the pond system, comprising: catchment stakeholder

consultation, investigations to fill data gaps, capital works and life cycle maintenance

activities. A comprehensive response has been developed which is cost effective, as it has

been based on feasibility assessments to determine life cycle costs of various options. The

alternative to the works and strategies is that pollution enters the ponds and moves through

the system where it festers and is extremely difficult and expensive to remove and dispose

of.

To round off the success of this Plan, there is a clear commitment and ability to deliver on

the various actions. Over the period 2009-2012 major capital works and maintenance

activities were completed in two of the most important ponds. Two GPTs were installed,

accumulated sediment was removed, noxious aquatic weeds were removed, and banks were

stabilised and revegetated. Some of these works were completed using Parklands volunteers

and they have been a complete success.

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Estimated project cost, including the cost of the stormwater component and

total project cost (this is to allow the judges to compare the benefits relative to

the costs across projects)

The cost of preparing the Ponds Management Plan 2012 was $30,000.

Costs for implementation of works, actions and strategies are listed, and the costs for annual

maintenance are also shown. The costs are high reflecting the overall value of the 12 pond

stormwater assets in the various functions they provide to visitors, the environment and the

broader community. The costs represent a realistic investment to maintain these functions

such that the asset value of the ponds is increased and their life prolonged.

Recommendations were assigned priority based on the effect that they have on improving

water quality function. The total anticipated expenditure on High Priority (2012-2017)

recommendations is $1,979,000 (examples of actions shown in Table 5). The total

expenditure on Medium-Low Priority (2017-2021) recommendations is $772,500. The

high priority works shown below will be the subject of future ponds works funding bids.

Table 5. Examples of High Priority management recommendations for Centennial Park

ponds.

Pond Works, practices and strategies Priority Cost

(2012$)

System-wide Undertake feasibility assessment and prepare a

Sediment/Organic debris Waste Management Plan with a

view to processing and recycling sediment removed from

ponds as organic topsoil for use in the Parklands

Critical, by

2012

30,000

Lower ponds Reduce carp numbers by electrofishing, especially in Duck,

Lily, Busbys, Randwick and Kensington Ponds

Critical, by

2013

50,000

System-wide Consolidate Pond topographic/bathymetric and feature

survey data, identify gaps

Survey Ponds with recommended internal works –

Randwick, Busbys, Duck, One More Shot

Determine Operating Water Levels for each pond and

place water level markers on outlet weirs.

Critical, by

2013

50,000

System-wide Create and oversight a Pond Water Quality Management

Committee with all catchment stakeholders

Critical, by

2013

$6,000 p.a.

Musgrave

Pond

Remove accumulated sludge from the entire pond. Critical, by

2013

250,000

Fly Casting

Pond

Repair leak in outlet weir and at same time install a

variable level weir that will drain the whole pond

Critical, by

2013

30,000

Lily Pond Investigate feasibility of water aeration system in pond (do

in combination with Duck Pond)

Critical, by

2014

8,000

Repair outlet structure

Install variable level outlet weir that will drain whole pond

and baffle plate

Replace steel grille cover

Critical, by

2014

50,000

Remove accumulated sediment and organic debris from

pond

Remove aquatic weeds (Nymphaea spp) from the pond

Critical, by

2014

250,000

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The Trust spent 1.8 million on pond rehabilitation works in two ponds during the period

2010-2012 (Kensington and Model Yacht Ponds) and this included the supply and

installation of two large CDS GPTs.

Maintenance will be a key feature of pond management into the future. Resources need to

be allocated to ensure the long term sustainability of the Centennial Park pond system

through appropriate operation and maintenance of the ponds. The consequences of not

maintaining will be that the ponds will not achieve their objectives, they will revert to a

degraded state, and they will be at risk of major water quality decline during any future

drought sequences. Table 6 is a schedule of life cycle maintenance for the ponds. The total

expenditure on pond life cycle activities is $173,600 per annum.

Table 6: Life cycle activity schedule and costs for Centennial Park Ponds

Maintenance activity Item Frequency of

maintenance

Cost per

episode

(2012$)

Cost per

annum

(2012$)

Removal and disposal of pollutants from GPTs

Model Yacht Pond CDS 6/annum 2,000 12,000

Musgrave Pond CDS 6/annum 1,600 9,600

Musgrave Pond Net trap 26x/annum 250 6,500

Musgrave Pond Channel upstream of net

trap

2/annum 3,500 7,000

Kensington Pond West CDS 4/annum 2,000 8,000

Kensington Pond East Net trap 26/annum 250 6,500

Removal and disposal of accumulated sediments & organic matter from pond inflows

Model Yacht Pond Accumulation zone 1/20 years 200,000 10,000

Musgrave Pond Whole pond 1/10 years 200,000 20,000

Kensington Pond East Whole pond 1/10 years 200,000 20,000

Kensington Pond West Accumulation zone

downstream of apron

1/20 years 200,000 10,000

Kensington Pond West Stilling basin on channel

from Busby/Randwick

2/annum 3,000 6,000

Randwick Pond southeast

inflow

Accumulation zone 1/annum 3,000 3,000

Randwick Pond - sthn

inflow

Trash rack 1/annum 1,000 1,000

Busbys Pond – Frog Hollow

Drain

Accumulation zone 1/annum 3,000 3,000

General pond maintenance

Clean up litter Pond edges and shallow

margins

Monthly 500 6,000

Electrofish for carp Especially in the lower

ponds,

Annually 25,000 25,000

Spray Nymphaea aquatic

weed

Typically Kensington,

Busbys, Randwick, Lily

Each spring 10,000 10,000

Remove/spray noxious and

environmental weeds

Pond edges and shallow

margins

Each spring - 10,000

Operate aeration devices Lily and Duck Ponds TBD TBD TBD

Page 19: SIA NSW Award Nomination: Excellence in Asset Management€¦ · SIA NSW Award Nomination: Excellence in Asset Management ... the management objective for the whole pond ... of the

Contact details of two referees who can be contacted by the judging panel if

required:

Steve Nichols – Centennial Park & Moore Park Trust, Ph 9339 6623,

[email protected] Steve was the project coordinator from the Trust.

John Dahlenburg – John’s Botany Bay Coastal Catchment Initiative program

provided some funding to one component of the project.

[email protected] Ph 9895 6244.

At least three photos (jpg format)

Supplied separately

Logos (lead applicant and project collaborators) in jpeg or eps format,

including permission to use and any conditions or guides to use

Supplied separately

Statement confirming the information provided is accurate and not misleading

in any way and that all relevant permissions from collaborations and clients

have been obtained for the award application.

The information contained in this award nomination is accurate and reflects the work

undertaken by the Centennial Park and Moore Park Trust and Storm Consulting. No

permission is required from any other organisation.