Earthworks construction activities have a significant environmental impact associated with the excavation and backfill activities and the transportation of soil. The machinery involved in the excavation and backfilling works is usually run by fossil fuels, producing large quantities of CO2 emissions. The movement of high volumes of soil involves heavy vehicles running on fossil fuels and emitting significant quantities of CO2. Soil represents a great percentage of the construction and demolition waste taken to landfill, which requires vast areas for disposal and poses a health risk to the population.