Landfill Gas Risk Assessment – Southwest Victoria
Client
Private
status
Completed
location
Geelong
industry
Custom
Project Scope
Scope of Works
Following multiple odour complaints from the surrounding community, Scaada Environmental was engaged to conduct a targeted landfill gas risk assessment under an EPA Victoria Entry Report. The investigation aimed to identify potential sources of fugitive emissions and provide a sustainable mitigation plan to reduce ongoing risk and community impact.
Challenge
EPA officers detected strong, intermittent odours — suspected hydrogen sulphide — near the landfill’s final cap. Limited historical data existed on waste composition or capping design, and the site’s sloping topography near the Moorabool River increased the likelihood of contaminated runoff and erosion.
Project Outcome
Solution
Scaada performed a targeted field investigation, including a methane surface emissions survey to pinpoint gas hotspots, followed by borehole gas monitoring for subsurface assessment. The team conducted visual inspections to assess cap integrity, erosion, and potential emission pathways. Data gathered refined the Conceptual Site Model (CSM) and informed updates to the site’s Environmental Management Plan (EMP) and risk characterisation.
Outcome
The project provided clear evidence of fugitive gas distribution and surface emission hotspots, informing EPA-aligned mitigation measures. Scaada’s findings guided long-term management strategies to prevent erosion, reduce odour impacts, and ensure ongoing compliance with Victoria’s Landfill Gas Fugitive Emissions Monitoring Guidelines.
