Demobilisation and Completion

Demobilisation and Completion After completion of the active remediation works and reinstatement of the site, demobilisation activities included the removal of: All temporary remediation infrastructure including the environmental control enclosure, emission control system and water treatment plant; All other plant and equipment; Temporary office buildings and associated facilities; All environmental monitoring equipment; Temporary signage; Temporary…

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Replanting with Native Trees and Shrubs

Replanting with Native Trees and Shrubs Trees and other vegetation were removed from the Macdonaldtown Gasworks Remediation site towards the end of 2014. The tree clearing was necessary to prepare for the excavation and removal of the site’s underlying contaminated soil. A qualified arborist supervised the works, which were undertaken in accordance with the detailed…

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Heritage-Listed Gasholder Restoration

Heritage-Listed Gasholder Restoration From the late 1800s until the mid-1900s, gasholders were commonly found in Australian cities and in cities across the world. These vessels were used to store gas created from coal, with the gas being used for street lighting and other purposes prior to the introduction of electricity. The gasholder located in the…

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Full Scale Remediation (Excavation)

Full Scale Remediation (Excavation) To remediate the former Macdonaldtown Gasworks site, the contaminated material was being excavated and transported to a licensed facility where it was treated, if required, before being disposed of to a licensed landfill. The full scale excavation process commenced once all of the retaining walls were installed and the environmental control…

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Commissioning of the ECE, ECS and WTP

Commissioning of the ECE, ECS and WTP Before full scale remediation excavations commenced, temporary infrastructure and plant essential to the process were commissioned. Items assembled on the site, such as the Environmental Control Enclosure (ECE), Emission Control System (ECS) and Water Treatment Plant (WTP), were systematically inspected, tested and checked to ensure that they were operating…

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Construction of Emission Control System (ECS) for the ECE

Construction of the Emission Control System The Environmental Control Enclosure (ECE) had an Emission Control System (ECS) that worked in conjunction with the enclosure to mitigate environmental impacts and maintain a safe environment for personnel undertaking remediation activities inside. The emission control system filtered the air that was extracted from the environmental control enclosure. The…

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Construction of temporary Environmental Control Enclosure (ECE)

Construction of the Temporary Environmental Control Enclosure Environmental controls are measures put in place to mitigate environmental impacts. The primary environmental control for the Macdonaldtown Gasworks Remediation was an Environmental Control Enclosure (ECE), that was constructed to cover the middle of the site where the most contaminated materials were excavated. The ECE included an Emission Control…

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Installation of Underground Retaining Walls

Installation of Underground Retaining Walls The underground retaining walls that were constructed onsite during the project were essential for protecting surrounding structures and services during the remediation, as well as allowing the excavation of contaminated materials. The walls: Resisted the pressures of the earth, groundwater and surcharge (the vertical load from an excavator at the ground’s…

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Construction of Water Treatment Plant (WTP)

Construction of the Water Treatment Plant A Water Treatment Plant (WTP) was constructed to remove contaminants from water during the remediation. After treatment, the water was discharged to the sewer under a trade waste agreement with Sydney Water. Contaminated water sources Excavation activities intercepted contaminated groundwater and decontamination activities such as the washing of plant also generated…

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