What does the remediation involve?
The remediation work is being delivered in two stages. The first portion of the remediation work involved installing an underground barrier wall around the perimeter of the site to prevent groundwater from moving in and out of the site. A new groundwater treatment plant was also installed to treat any contaminated groundwater at the site. The second portion of the remediation work involves improving the ground, constructing a waste containment cell and installing an integrated capping system across the surface of the site.
How is the work being managed?
Remediation of the site is being performed in accordance with regulatory requirements and industry best-practice. Specific safety and environmental controls and monitoring systems are used throughout the remediation activities. Transport for NSW is working in consultation with the City of Parramatta Council and EPA. The project is being overseen by an independent Site Auditor accredited by the EPA.
Can the waste be recycled?
The remediation strategy is re-using materials onsite to minimise the amount of waste that is removed, subject to safety, geotechnical, environmental and regulatory requirements.
How long will the work take?
The first portion of the remediation work has been completed. The second portion of the remediation work is expected to be complete in 2020.
Is the community safe during remediation works?
Transport for NSW has engaged highly experienced, specialist remediation contractors to perform the remediation works. The contractors are mitigating safety and environmental impacts through traffic controls, covering stockpiles and trucks, managing dust and preventing rainwater from affecting the waste.
Specific safety and environmental controls are detailed within a Construction Environmental Management Plan. The contractor is also using monitoring equipment to ensure the controls are operating effectively.
What are the impacts of the work?
The remediation work has some short term impacts, mostly associated with traffic and noise. Trucks are required to bring equipment to the site and to transport some materials off the site. Specific traffic management arrangements are planned and communicated prior to the work. The work also involves some noisy equipment such as excavators. Transport for NSW and the contractor will work to minimise the disturbance to the community.