Following receipt of the Department of Planning, Industry and Environment (DPI&E) approval in late May 2019, and the successful field trial within Kendall Bay, undertaken in late 2018, its now anchors up and full steam ahead for the Sediments Remediation Project in Kendall Bay.
The DPI&E approval is a significant milestone and follows more than ten years of investigation, planning and scoping works. The remediation methodology offers a practical solution to a technically challenging project with the important aim of reducing impacts as best possible to the local Community during the works. The method involves mixing marine cement and additives into the contaminated sediments beneath the seafloor containing them into a permanently ‘raft’-like slab.
Jemena’s appointed specialist remediation contractor, Ventia will undertake the full scale works. Ventia mobilised to the Mortlake Staging site in Tennyson Road in September 2019. The installation of Environmental controls (silt curtains, monitoring devices) in the water in Kendall Bay are scheduled to commence from early November with the remediation activities due to start in early 2020.
The contamination of sediments in the Bay occurred as a result of historical gasworks related activities from the adjacent former AGL Mortlake Gasworks site (Sydney’s largest gasworks, producing gas from coal from 1886–1971). Remediation of parts of Kendall Bay are required to
address health and environmental risks posed by the contamination resulting from the historical industrial discharges from the former AGL Mortlake Gasworks site. The project is scheduled to be completed within 15 months (weather and site conditions dependent); current estimated completion date is the end of 2020.
Jemena’s Community Liaison Manager said that one of the key environmental controls involves the installation of sheet pile walls which are an effective and robust means of containing the active work area. The construction of the sheet pile walls and installation of mooring piles will be
percussive in nature and may be disruptive to local residents. We understand these works may be unpleasant and we have rescheduled the piling works to avoid undertaking them during the holiday period between 22 December 2019 – 5 January 2020. We do appreciate the patience and
understanding of the local Community during these important environmental remediation works.
The Kendall Bay Project Team meet regularly with the Community Liaison Group who are a group of local residents who provide advice and
feedback to the Project on behalf of the Community.
Please contact Barbara Ferry-Smith for further information on the Project, or to answer any questions you may have:
Phone: 1800 571 972
Register to be kept updated with emails and provide your feedback: haveyoursay.jemena.com.au