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Case Studies

Tackling PCB and TCE Challenges for Harvey Norman in Springvale

February 12, 2024
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Harvey Norman Holdings Ltd (Calardu Springvale) faced significant environmental challenges at the Springvale site, prompting the need for comprehensive soil and groundwater assessments.

In 2004, they enlisted the expertise of EESI to address PCB contamination in the soil. Over 800 soil samples were collected from more than 200 locations, unveiling the degree and extent of the contamination. Subsequently, EESI developed an Environmental Improvement Plan and orchestrated the remediation of approximately 70,000 m3 of PCB-contaminated soil.

In 2016, as the project progressed, further challenges emerged when TCE contamination was discovered. This necessitated an expansion of the initial project scope, including plume delineation works, solute transport modelling, vapour intrusion risk assessment, and ongoing groundwater monitoring.

The Solution

Stage 1 Works (2004):

EESI initiated a comprehensive soil and groundwater assessment, collecting over 800 soil samples to delineate PCB contamination. The findings led to the development of an Environmental Improvement Plan and the successful remediation of ~70,000 m3 of PCB-contaminated soil.

Stage 2 Works (2016):

Calardu Springvale commissioned EESI to address TCE contamination, leading to the installation of groundwater monitoring wells for plume delineation. Solute transport modelling aided in source apportionment, and additional measures, such as vapour pin installation and risk assessment, were implemented. Ongoing groundwater monitoring became a crucial component of the solution.

Client Benefits

Through EESI's expertise, Harvey Norman Holdings Ltd navigated and successfully addressed complex environmental challenges at the Springvale site. The soil and groundwater assessments provided a detailed understanding of PCB contamination, allowing for targeted remediation efforts. The expanded scope of the project in 2016 demonstrated EESI's adaptability in addressing emerging challenges, ensuring the effective management of TCE contamination. Ongoing groundwater monitoring and future plans for further assessment exemplify EESI's commitment to sustained environmental solutions, providing lasting benefits for the client and the site.

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