The project involved the remediation of the former Camden High School site located in Camden, NSW. Remediation works were required on portions of the site associated with the former Gasworks. Historical investigations identified elevated concentrations of gasworks residue in soil at the site. Remedial works were conducted by Liberty Industrial to remove the need for ongoing long term management of contamination at the site, and to enable redevelopment of the site.
Gasworks which operated at the site between 1911 to 1974. Subsequent to the closure of the gasworks, the site was incorporated into the Camden High School in 1975.
Liberty Industrial’s activities on the site include the following:
- Preparation of management plans including Remediation Works Plan, Traffic
- Management Plans, including daily onsite vehicle movement plans, Quality, Safety and
- Environmental Management Plans;
- Preparation of Asbestos Removal Controls plans, provision of dilapidation surveys and
- reporting on neighbouring properties;
- Completion of service location activities and excavation permit procedures
- Site establishment including site security, amenities and HSE controls;
- Demolish ground slabs and ancillary site features
- Hazardous waste contaminated soil handling and management;
- Install site environmental controls, monitor and maintain throughout the works
- Grub and removal tree stumps and roots, including obtaining of tree removal permits
- Establishment of a fully enclosed soil excavation within an Emissions Control Enclosure (ECE) that was connected to a continuous operating Air Extraction with off-gas treatment namely an Emission Control System (ECS)
Approximately 6500m3 of material was excavated from around the site for classification (Hazardous), handling disposal offsite to a licensed soil treatment facility in accordance with NSW EPA material tracking protocols. In addition to the soil impacted groundwater encountered during the works were managed via on site containment/storage, treatment and disposal.
A comprehensive network of silt fencing, dish drains, diversion swales and sediment basins was designed and constructed by Liberty Industrial for the works. Liberty Industrial reused mulch form removed trees to created water flow bunds and diversion structures such that all surface water was diverted to the detention basin and sampled prior to discharge form site.
The majority of the excavation was performed within the site enclosure (the ECE) with trucks following a strictly procedure for entering the exiting such that minimal odour was generated during the process as well as dosing with an odour suppressant to mitigate odours being generated during transport. In total approximately 6,500m3 was excavated with over 6,000 tonnes being disposed off-site with the balance of materials validated for site re-use.
This project was unique in that the local council had a very keen interest due to the history of the site and the stigma that had surrounded it for many years. As a result our client allowed council to play a key role in the oversight of these works. Several members of council attended the site on a near daily basis to get an update on progress and to inspect the various work areas.
The project was successfully completed in line with stringent program requirement dictated by future development on the site.