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How much gas is moving from the Oval?

The life cycle of a landfill shows that landfill gas is released as waste breaks down over the decades. When a landfill is closed, there is an initial spike in emissions which rapidly declines over time. As Foxglove Oval is 40 years old, the amount of landfill gas being released is past the peak rate. Based on modelling, the peak rate of gas generation would have been about 1,139 m3/hour in 1982. The current maximum gas generation rate is modelled to be 53 m3/hour. This represents about a 95% reduction in the maximum rate of gas generation from 1982 to 2021.