Project Highlight

Project Highlight

Remediation – EnviroNews

Enviropacific has completed important work on one of Australia’s most significant urban renewal projects, marking a significant achievement for our remediation team.

Barangaroo is one of the Sydney’s most historic sites, situated on the southern end of the Sydney Harbour Bridge. The area was used by the local Cadigal people for fishing and hunting prior to colonial settlement when European settlers built a small settlement. In 1841 it became the site of the Millers Point Gasworks, which weren’t decommissioned until 1921.

In 2012, construction at Barangaroo commenced with the Barangaroo Reserve and first commercial tower in Barangaroo South.


Enviropacific was engaged to undertake remediation of the former Gasworks structures, including subsurface tanks containing coal tar and large volumes of contaminated soil, located under Hickson Road. Our team used a range of specialist remediation and civil technologies to successfully deliver the work.

In the sensitive CBD environment, we designed and constructed all components of the works using intricate project staging designed to facilitate the construction works including road diversions, extensive piling, odour control enclosure installations, services relocations, deep excavations and permanent road pavement and street furniture reconstruction. The end result:

  • 10,000 cubic metres of tar-containing material was removed and treated
  • All remediation work was completed in an enclosed and fully sealed environment
  • All vapours from the work were captured and treated prior to release
  • Pre-treatment of all contaminated groundwater was undertaken by our water treatment plant

After 2.5 years, the site has been officially validated confirming the land is suitable to be developed, allowing the NSW EPA declaration to be lifted. This a huge milestone for both Enviropacific and the Barangaroo project!

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