Property and Infrastructure Specialists
Providing specialised remediation advice, risk mitigation, environmental auditing and environmental management services, saving our client almost $20M.
Barangaroo Delivery Authority
Sydney, NSW

The legacy of Millers Point Gasworks

The gasworks at Millers Point provided Sydney with the first gas light network outside of Europe. It operated from 1841 to 1921, when it was demolished to make way for Hickson Road. As part of the decommissioning process, all above-ground structures were removed – but below the ground, a series of tanks cut into the sandstone, containing coal tar, remained in place.

In 2009 the NSW Environmental Project Agency declared that the gasworks was to be remediated, as part of a significant transformation of a 22ha area to create:

  • A financial hub
  • Commercial and residential high-rise towers
  • The Crown integrated resort
  • More than 10ha of open recreation space and parkland

Environmental remediation specialists

APP has more than 25 years’ experience managing contractual risk on environmental projects and is the market leader in gasworks remediation.

In recognition of this expertise, we were appointed by Barangaroo Delivery Authority (BDA) in 2011 to manage the government’s risk, in the role of remediation advisor and project manager.

Comprehensive environmental service

Our team provided a full suite of site surveillance, environmental auditing and environmental management services.

We also delivered specialised remediation advice during:

  • The basement excavation of three commercial towers adjacent to the gasworks
  • The construction of the headland park.

The remediation works involved:

  • An in-situ chemical oxidation trial, targeting the structures beneath Hickson Road
  • The excavation of more than 150,000 tonnes of gasworks contamination as part of a 400,000 cube basement excavation.

All works were undertaken within odour control structures, under an EPA Management Order.


APP’s risk mitigation strategies saved the BDA nearly $20M across the life of the project.

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