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Installing critical discharge pipeline infrastructure within the Parramatta CBD as part of the Sydney Metro West project.

Gamuda & Laing O’Rourke Consortium (GLC) – Sydney Metro West

Parramatta CBD, New South Wales

Urban Pipeline Installation

[Project Background]

Supporting Major Metro Infrastructure with Utility Works

The Sydney Metro West project is delivering a new underground metro rail network connecting Parramatta and the Sydney CBD. As part of the Western Tunnelling Package, temporary water treatment facilities were required to manage water generated during tunnel construction.

Killard was engaged to deliver the discharge pipeline connecting the water treatment plant outfall to the designated discharge point downstream of the Parramatta River weir.

[Scope Of Works]

Operating in Sensitive and Live environments

Construction of discharge pipeline infrastructure supporting tunnelling and treatment operations within the Parramatta CBD.

Installation of temporary treatment plant discharge pipeline infrastructure

Trenching and excavation works within highly congested CBD utility corridors

HDD and open trench construction across active road and service environments

Traffic management, temporary restoration, and integration with existing stormwater infrastructure

Project Technical Snapshot

Installation of water treatment plant discharge infrastructure through a highly constrained urban corridor.

Water Treatment Plant Discharge Pipeline

Construction Environment

Parramatta CBD Utility Corridor

Installation Method

Open Cut Trenching + Horizontal Directional Drilling (HDD)

[Outcome / Key Features]

Urban Discharge Infrastructure Delivered in Live City Environment

Outcome

Installation of discharge pipeline connecting the temporary water treatment plant to the Parramatta River outfall
Integration of the new pipeline with the existing stormwater system at George and Charles Street intersection
Full trench excavation and pipeline installation across the urban corridor
Temporary road and pavement reinstatement along the construction route

Key Features

Construction undertaken within highly congested utility corridors in Parramatta CBD
Extensive service identification and non-destructive digging (NDD) investigations prior to excavation
Pipeline alignment navigated around high-pressure gas, telecommunications, stormwater, water, sewer and electrical infrastructure
Combination of HDD and trenching techniques implemented to minimise disruption to traffic and surrounding businesses
Night construction works undertaken along George Street to comply with traffic and noise restrictions
Detailed Traffic Management Plan and road occupancy approvals implemented to manage works within live road corridors

[Environmental Responsibility]

Managing works within a dense urban environment

Construction activities were carefully planned to minimise disruption within the Parramatta CBD. Controlled excavation methods, traffic management planning and night work scheduling ensured safe delivery of the discharge infrastructure while maintaining access for surrounding businesses and residents.

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Treatment Plant Discharge Line

Urban Pipeline Installation

Supporting Major Metro Infrastructure with Utility Works