Civil Works Projects

Werribee River Lower Section 8 Wetland

Construction of wetland consisted of bulk earthworks including haulage, screening and clay liner installation; pipes, pits, culverts and stormwater GPT; rock headwalls and sediment basin access ramp.

Mt Atkinson Section 5 Drain Wetland & Waterway

Construction of a wetland and waterway included bulk earthworks, clay liner, sediment pond; drainage works including end walls, pipes and pits; concrete works; access track; rockwork and geotextile.

Euroa

Construction of a 300ML earthen storage lagoon, upgrade of a 560L lagoon to 700ML and new pumping station.

Storage No. 2 (300 ML Storage) works included; Vegetation clearing and removal; Construction of all access tracks including concrete culverts and headwalls; Level 1 geotechnical supervision, testing and QA; Strip and stockpile topsoil; Cut storage to design lines and levels; Excavation, placement and compaction of select material into the embankment from stockpile or cut; Preparation and compaction of base of storage including placement of fill; Concrete encasement and sand filter for new inlet and outlet; Construction of an overflow pit and pipework to Storage No. 1; Construction of a concrete inlet channel; Install floating offtake; Install riprap and geotextile base; Placement of topsoil and hydromulch; Installation of permanent survey monitoring points, piezometer and chainage markers.

Replacement pump station works including; Power supply upgrade; Construction of a hardstand and elevated pad above flood level; Design and construction of a slab foundation and shed superstructure; Supply and installation of back pull-out pump sets; Construction of pipework and valves into and out of the pump station; Design and construction of electrical and control equipment including switchboard and VSDs; Design and construction of building electrical requirements including lighting, ventilation and power supply; Supply and installation of instrumentation (including flowmeter, pressure transmitter, pressure gauges, level switches and all associated instrumentation).

Pump station and inlet structure at Seven Creeks works including; Design and construction of a wet well pump station and cover slab; Supply and installation of submersible pump sets; Design and construction of a valve chamber; Construction of inlet pipework, discharge pipework and valves, a flow meter installation, a screened inlet from Seven Creeks, a hardstand;  Creek embankment protection works including rock beaching and sheet pile retaining wall; Design and construction of an elevated switchboard platform; Design and construction of electrical and control equipment including switchboard and VSDs.

Construction of inlet and outlet pipelines works including; Outlet pipe from No.1 Storage to the replacement pump station; Supply and install DN300 HDPE pipeline from Seven Creeks Pump Station to Storage No. 2 including air valves and scours; Construct cross connection to the existing DN250 DICL pipeline to/ from Mt Hut; Install DN300 HDPE outlet pipeline from Storage No. 2 to Storage No. 1 .

Timbertop

Wetland construction including; Implementing environmental controls comprising of erosion protection, silt fence for water runoff, construction of drains and sedimentation dams; Disposal of all surface rock, vegetation, fences and rubbish; Stripping of topsoil; Disposal of excess material; excavation and compaction of clay liner; Erosion protecting; Crushed rock maintenance track; Concrete industrial driveways and weir; Rock beaching; Concrete sleeper walls; Drainage pipes, pits and end wall; Dewatering desludging and removal of contaminated material; Hydroseeding of site to ensure regrowth; Full site rehabilitation.

Mary Street Wetlands

Construction of wetland including bulk earthworks and associated works.

Works included: Tree removal; Bulk earthworks including stripping of topsoil, trimming of wetland, clay lined sediment pond, interim bypass channel, control of pollution and sediment laden runoff, respreading of topsoil; Drainage including pipe, box culvert and pits; Rock riffle and rock beaching; Access track; and hydroseeding. Contract extended for landscaping works including jute mat, bird netting and planting of 84,668 plants.

Dandenong Creek Remodelling and Wetland

The lower Dandenong Creek remodelling was an extensive wetland project completed for Melbourne Water. These major in-stream works required detailed site management, coordination of major excavation fronts and works within difficult site conditions. 

Works included; Bulk earthworks; Placement of extensive clay liners; Decommissioning and removal of existing concrete assets; Installation of new concrete assets inclusive of extensive maintenance tracks, high flow weirs and numerous fish ladders/passages; Installation of wetland controls structure inclusive of penstocks, transfer pipework and associated pits; Riffle structures; Sediment basin; Diversion channel; Rock beaching; Hydroseeding and hydromulching; and Fencing.

Colac Basin

Construction of 465ML Colac Basin No. 5 which was delivered under the stringent OH&S, quality and environmental requirements of Barwon Water.

Works included placement of zoned fills (zone a and b materials), filtration layers and gravity support sections; Installation of numerous concrete structures (including an eleven meter high outlet structure); Installation of extensive DICL pipework and associated fittings ranging from 150-600mm diameter; Installation of a suspended steel gantry way and associated structural steel works; Placement of geosynthetics and lagoon rock lining; Completion of stringent geotechnical testing; and Electrical control work.