BINGO continues to take preventive actions at its Eastern Creek facility to manage odour emissions triggered by environmental factors. This includes the engagement of an additional independent expert to investigate and identify potential sources of odour at the Eastern Creek facility, and to recommend immediate and intermediate mitigation measures to fix identified potential sources of odour.

This independent expert has identified that the substantial increase in rainfall associated with persistent La Nina conditions along the east coast of Australia impacted the efficacy of the sites integrated landfill gas (LFG) collection and treatment system.

BINGO is in the process of implementing the following measures:

• Establishing four additional gas collection wells for connection in the south-east area of the landfill to improve capture capacity;
• Removing all water, leachate and sludge pooled around the leachate riser to allow for the re-seal of the leachate sump and re-establish LFG extraction at the leachate sump;
• Ensuring that the intermediate cover surface across the landfill in all areas not being actively used is maintained by compacting, rolling and grading to remove rutting and reduce local pooling;
• Installing five new LFG extraction wells into ‘recently tipped wastes’ areas of the landfill;
  • Completing the repair of 2 damaged gas wells at the riser – which wasflooded during March rainfall - and the installation of a temporary pipeline to reconnect these to flares while the riser lift and rectification work is in progress;
  • Working with Sydney Water to increase rates of leachate extraction while continually pumping pooled surface water to the sewer.

In addition, BINGO has:

• Secured development approval for the installation of a permanent landfill gas capture and flaring system, approved under MOD10. The project is currently under construction with operation forecast for late 2022;
• Undertaken essential maintenance and rectification works of gas collection wells in the vicinity of riser impacted by March flooding event;
• Finalised planning for a new leachate riser lift
• Undertaken critical maintenance works and commissioning of a sixth flare scheduled for completion on 27 April 2022;
  • Commenced the replacement of the leachate extraction pump. scheduled for installation at the end of April;
  • Commenced trenching and connection works to five recently installed gas collection works with 5 wells to be connected to the main landfill gas lines by the end of April.