Materials used for operation of the landfill (OL) include sand
and clay used for daily cover and intermediate cover, respectively,
as well as water used for truck washing. The diesel
required for OL is calculated in the next paragraph. The consumption
of sand and clay can be calculated by Eq. (1) based
on the thicknesses of cover layers (Table 1). Water usage for
every one tonne of waste was reported at 47 L (Wei et al., 2009).