REMEDIATION AND ONGOING MANAGEMENT
The remediation of contamination was a critical first step in the Harbour Trust’s transformation of the site into a new public urban park.
Initial remediation involved above-ground preparations including demolition of some buildings, removal of hazardous materials, repairs to the seawall and wharf, and upgrading of underground services
The next stage of remediation involved the construction of an odour control enclosure, and installation of an emission control system and water treatment plant. Around 3,000 tonnes of tar-containing materials were excavated and removed by barge for off-site disposal.
At six storeys high, the odour control enclosure was the largest structure of its type ever constructed. 27,000 tonnes of material remained for on-site treatment and stabilisation. This material was then used to backfill the excavated area and to create a mound capped with clean soil, forming the base for the landscaped park at the northern end of Sub Base Platypus.
Ongoing Long-term Management
Remediation has been completed, and an Environmental Management Plan has been prepared for the long-term management of remnant contaminated soils and groundwater.
For more information and to view a copy of the Long-term Environmental Management Plan (EMP) click here.