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Landfill Gas Interception Design and Installation
New South Wales
2018
Landfill Gas Risk Assessment, Landfill Gas Mitigation Design
Core Environmental Projects (Core-EP) were engaged to undertake a detailed quantitative landfill gas risk assessment for a large master-planned residential precinct. The land proposed for redevelopment was formerly quarried for sand until the mid-1980s before being backfilled with demolition and construction waste.
As the risk assessor, Core-EP collaborated the site investigation consultant and Auditor to develop advanced landfill gas investigation techniques (seldom used in this field) to increase data confidence and ultimately meet the client’s objective; increase land value and avoidance of expensive landfill gas mitigation requirements (where justifiable).
A comprehensive and robust assessment of the data was completed in accordance with NSW EPA and international guidelines. A tiered approach to the assessment was followed whereby initial screening was followed by a complete detailed quantitative risk assessment, including site-specific modelling of gas flow from the ground under various influences such as tidal variations in groundwater.
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