City of Karratha

New landfill cells at 7 Mile Waste Facility

08 Sep 2017

Two more landfill cells are set to be developed at 7 Mile Waste Facility as the current landfill cell nears the end of its useful life.

The new cells will be Class 3 rated, meaning they are much higher quality in terms of their environmental performance than existing Class 2 landfill cells. They will be fully lined, and include leachate extraction and landfill gas management systems. 

The higher quality facilities will result in the Landfill site being more environmentally friendly and will enable additional products to be deposited at the site that are currently not able to be stored at the facility.

City of Karratha Mayor Peter Long said it was forecasted the cells would be able to handle waste until 2023 while existing landfill would see ongoing rehabilitation work once they had been closed.

“We estimate waste levels to increase by 2% each year and based on this our forecasts indicate current cells to be full by mid-2019. These new Class 3 cells are expected to last another four years, taking us through to 2023,” Cr Long said.

“Once completed, 7 Mile Waste will be the only facility in the region capable of handling Class 3 waste. With 6000t produced in the Pilbara each year there is the opportunity for a further revenue stream should this be diverted,” he added.

“Once full, our current waste cells will close and rehabilitation work will begin. This includes final capping of the landfill and ongoing post closure monitoring and maintenance.”

Tenders will be called for the $6.2 million project next month, with the cells expected to be operational by September 2018.

The estimated capital cost associated with the development and closure of 7 Mile Landfill cells is $37.4 million over the next 28 years. These costs are included in Councils Long Term Financial Plan and 10 Year Capital Works Program.