www.entracon.com.au

the bulletin

ENTRACON BIANNUAL UPDATE

Volume 2, Issue 4

SUMMER / AUTUMN 2013

Entracon

51 Melverton Drive Hallam VICTORIA 3803

Ph: 03 8786 3700 Fax: 03 8786 3722

In this issue… Current Projects Clarrie Hall Dam Spillway Upgrade Murwillumbah, NSW Kalparrin Stormwater Harvest Greensnborough VIC Surrey Road Park, South Yarra, VIC Laurimer Drain Section 23, Doreen, VIC Completed Projects

Lily Pad Bridge Royal Botanic Gardens Cranbourne, VIC Surrey Dive Rectification, Box Hill, VIC Reflections Estate Wetlands Tarneit VIC Elsternwick Stormwater Harvesting Elsternwick, VIC Doug Dean Wetlands, Ballarat, VIC Mitchells Run Laurimer Wetlands Doreen, VIC

Clarrie Hall Dam Spillway Upgrade, Uki / Murwillumbah Region, NSW

Clarrie Hall Dam is a rock-filled embankment dam located on Doon

Doon Creek, a tributary of the Tweed River, approximately 4 km south

west of Uki. The 15,000 ML litre reservoir provides the drinking water

for the Tweed Region. Tweed Council is upgrading the Spillway to

meet the Dam Safety Committee’s Requirements and to ensure that

the dam can continue to safely pass extreme flood events.

The spillway upgrade works involve widening and extending the

entrance of the existing spillway chute. A parapet wall across the dam

crest will be raised to prevent water from flowing over the dam wall in

an extreme flood event and enable the water to be released safely

through the spillway. The parapet wall will not increase the water

storage capacity of the dam and the dam storage will remain at current

levels

www.entracon.com.au

2013 Current projects

Volume 2, Issue 4

Clarrie Hall Dam Spillway Upgrade, Uki / Murwillumbah Region, NSW

Client:

Tweed Shire Council

Project Design:

NSW Public Works

Contract Sum: $5.4M

Works Include

Structural Concrete works associated with Raising the spillway wall by 2m

Extending the existing spillway entrance by 35m.

Strengthening the flip bucket downstream of the spillway

Key Aspects

Working in operating dam environment where water levels are to be maintained

Design and construction of temporary coffer dams. No existing access to work area. All plant and materials need to

be craned out. Scaffolding access for workers needed to be built Protection of works during flooding Working at heights (10.5m walls) Setting up and constructing pre-cast area for onsite casting of

parapet units (220 No. units)

www.entracon.com.au

2013 Current projects

Volume 2, Issue 4

Kalparrin Stormwater Harvest, Greensborough, Vic

Client:

Banyule City Council

Project Design:

Clevertek

Contract Sum: $1.9M

Works Include

Dewatering and control of inflows Bulk Earthworks Construction of wetland and associated features Construction of rock headwalls, weir structure and wetland inlet

and outlet structures Planting of wetland and batter slopes including hydroseeding of

finished earthwork areas Construction of underground scoria tank Construction of new pump stations

Key Aspects

Heavy Rains causing flooding of the works area

Protection of Flora/Fauna Extensive rock breaking for the wetlands Gypsum application to the wetlands clay seal

The rejuvenation of the lake in Kalparrin Gardens in Greensborough is the first stage in Banyule City Council's clever new way of ensuring local parks and sporting grounds will have their own water supply long into the future. The project will build an innovative water conservation and quality improvement system to capture, treat and store stormwater underground for use on parks and ovals in Greensborough. The Banyule Stormwater Harvesting project is a unique partnership between the Banyule City Council and bot h the Victorian and Australian Government

www.entracon.com.au

2013 Current projects

Volume 2, Issue 4

Surrey Road Park, South Yarra, VIC

Client:

City of Stonnington

Project Design:

Tract Contract Sum: $ 0.6 M

Key Aspects

Ex Council Depot

Constraints due to pre-existing structures

Unsuitable ground conditions

Integration with Surrounding property

High profile

Works Include

Construction of underground drainage system

Construction of rain gardens and garden beds

bluestone seating and cobbles.

Construction of a rock swale

Construct coloured concrete works

Stonnington City Council is undertaking the development of a new Park in the heart of South Yarra. The Park will occupy the former Waste Transfer Station, located off Surrey Road and bounded by the railway line to the south and Drain Reserve Road to the north. The park will occupy approx. 5,500m2 of open space and has a strong environmental theme, with rain gardens and an underwater storage tank supporting the landscape installation.

Working alongside neighbouring apartments

www.entracon.com.au

2013 Current projects

Volume 2, Issue 4

Mitchells Run Laurimer Main Drain Stage 23, Doreen, Vic

Client:

Dacland Management

Project Design:

CPG

Contract Sum: $2.5M

Key Aspects

Heavy Rains causing flooding of the works area Protection of Flora/Fauna Extensive rock breaking for the wetlands Planting and maintenance of substantial amounts of

soft landscaping

Mitchells Run is a residential neighbourhood located in Doreen in Melbourne’s northern growth corridor. As part of the developmental plan to maintain the natural topography, remnant river gums and waterways, Entracon is working with Dacland Management to create a Wetland that will not only enhance the liveability of the estate but also serve as a functional stormwater and floodway water catchment system. This is the next stage in the development.

Works Include

Removal of existing culverts and pipework Bulk earthworks Bulk rockwork and rock breaking Landscaping Construction of sediment pond with clay

liner

www.entracon.com.au

2013 completed projects

Volume 2, Issue 4

Works Included

Construction of artistic steel bridge & concrete footings Construction of exposed aggregate concrete walkway &

supporting structure. Stone retaining wall construction and bluestone paving Custom made recycled timber furniture construction Construction of custom corten balustrade Construction and installation of additional aesthetic features.

Surrey Dive Rectification Works, Box Hill, VIC

Key Aspects

Control of ground water inflows Co-ordination of bridge works with

existing features Load limitations Access restrictions Protection and preservation of

existing flora/ fauna

Client:

Royal Botanic Gardens

Project Design:

Taylor Cullity Lethlean Paul Thompson

Contract Sum: $0.7M

Client:

City of Whitehorse

Project Design:

MDG Landscape Architects

Contract Sum: $ 0.3 M

Key Aspects

Working at heights to construct 5m gabion wall High Profile project Limited work space Architectural finish to gabion wall Fauna and Flora management during tree felling process.

Works Included Bulk Earthworks Construction of Gabion retaining walls

Royal Botanic Gardens Lily Pad Bridge Construction, Australian Garden Project Stage 2, Cranbourne, VIC

www.entracon.com.au

2013 completed projects

Volume 2, Issue 4

Reflections Estate, Tarneit, Vic

Works Included

Clearing, Stripping and stockpiling topsoil and vegetation

Construction of Wetland and associated features

Construction of rock headwalls, weir structure and wetland inlet and outlet structures

Planting of wetland and batter slopes

Key Aspects

Working in operating creek environment with high catchment and rapid water level increases

Working within operating golf course Maintain existing irrigation systems while upgrading

infrastructure Working with contaminated soil (Category C) and

construction of a lined underground tomb

Works Included

Site clearing and bulk earthworks Construction of Wetlands and associated drainage pits Concrete work and fencing Construction of new box culvert crossing Landscaping

Elsternwick Stormwater Harvest, Elsternwick, Vic

Key Aspects

Excavation in rock Working within a live waterway\ Limited Stockpile area Traffic/Pedestrian Management

Client: National Pacific

Properties

Project Design:

CPG Contract Sum: $ 3.5 M

Client: Bayside City Council

Project Design:

AECOM Australia

Contract Sum: $1.7M

www.entracon.com.au

2013 completed projects

Volume 2, Issue 4

Doug Dean Reserve Wetlands, Ballarat, VIC

Works Included

Construction of Wetland Construction of culvert crossing Feature rock work Stormwater drainage Concrete Paths Landscaping

Key Aspects

Construction of Wetland in Basalt Rock Environmental Management with consideration of abutting

existing subdivision Restricted site conditions and working in conjunction with

separate subdivision contractors Management of water in existing stream and floodway

Works Included

Bulk Earthworks Construction of Pipe and Box Culvert Drainage Pit & Wingwall construction Basin Clay Lining Construction of Concrete Weir & Rock Beaching Soil Reinstatement

Mitchells Run Laurimer Wetlands, Doreen, Vic

Key Aspects

Working with Live drainage system Excavation of rock 12,000m3 Public/Pedestrian management /

control for neighbouring school and kindergarten

Minimal stockpile area

Client: City of Ballarat

Project Design:

City of Ballarat

Contract Sum: $ 0.8 M

Client: Dacland Management

Project Design:

CPG

Contract Sum: $3.6M

2013 Other News

www.entracon.com.au Volume 2, Issue 4

OH & S and Training

Scott Slade and Ben Hoekstra have gained their Melbourne Recipient Card qualification. Nathan Fowler obtained his working in confined spaces qualification

Scott Murdoch and Kevin Pepyat have requalified for First Aid

2013 Team Building and Training Weekend,

The Cumberland Resort in Lorne was again the location for this year’s Entracon Team Building and Training

Weekend. Staff attended training seminars and group activities aimed at improving team based skills and with

near perfect weather many took full advantage of the wonderful beaches and local activities on offer

Congratulations go to Scott Murdoch and Rob Davis on becoming the 2013 champions in the annual

Entracon Tennis Competition.

Welcome

Brett Ford Operator

Andrew Kennedy Supervisor

New to the

Entracon Fleet

PC 300-8

D6T Dozer

PC 228-8

Hitachi ZX48

Kevin Williams Senior Project

Manager