On 29 July 2016 residents in the Allenby Gardens/Flinders Park groundwater prohibition area (GPA) were provided an update by Riverside Park, developer of the site at Moorfield Terrace, Allenby Gardens.
The update outlined the current environmental assessment being undertaken and invited residents to attend a community event hosted by Riverside Park on 9 August 2016. Representatives of the site contamination auditor, consultant and the EPA attended the community event.
The environmental assessment undertaken in relation to the Moorfield Terrace site has included the sampling of soil, soil vapour and groundwater, with the most recent groundwater sampling event being undertaken at the Moorfield Terrace site and offsite locations in May 2016.
The developer engaged an EPA accredited site contamination auditor in August 2014, to ensure the site at Moorfield Terrace is suitable for the proposed residential development. The role of the auditor is to independently review the assessment and remediation being carried by consultants on behalf of the developer, to ensure its consistency with the requirements of the National Environment Protection (Assessment of Site Contamination) Measure (NEPM) and EPA guidelines. The NEPM was amended in May 2013 and includes standards for the testing of volatile chemicals.
In September 2015 the EPA received Interim Audit Advice issued by the auditor to support the development at the Moorfield Terrace site. The auditor considers the site can be made suitable for the proposed medium density residential use, subject to the implementation of the remediation management plan endorsed by the auditor.
The current audit is expected to be completed in 2017. A site contamination audit report will be prepared by the auditor on completion of the audit and will be made available on the EPA Public Register at that time. During the audit process, assessment and remediation works are carried out by consultants and documented in various reports, which are provided to the auditor.
An earlier site audit report was completed for the Moorfield Terrace site by another auditor in 2009, which determined that the site was suitable for a previous development that was proposed at that time, and which included requirements for ongoing monitoring of groundwater wells situated in onsite and offsite locations.
The known groundwater contamination includes the volatile solvents; trichloroethene, dichloroethene and vinyl chloride. The site audit report and other reports on the ongoing groundwater monitoring are available on the EPA Public Register.
Groundwater Prohibition Area
In relation to the known groundwater contamination the EPA established the Allenby Gardens/Flinders Park groundwater prohibition area (GPA) in June 2013. The GPA prohibits the use of groundwater from the top two aquifers, which are 0–30 metres below the surface of the ground.
This proposed development is within the GPA established by the EPA in June 2013.