It is a landfill method at a level below the original level. By digging the soil to the required level, crush the solid waste into thin layers until it meets the required levels of solid waste, crush each layer and cover it with daily cover.

In general, the depth of groove digging is determined by groundwater levels. At least the bottom or bottom level should be at least 1 meter above groundwater level, taking the water level in the rainy season as a threshold. To prevent contamination of groundwater.

Groove-digging landfill does not require soil levering. The grooved walls can be used as walls for solid waste to compact. You can also use the soil used in landfill to dig it back into solid waste.

It is a landfill method for large basins that may occur naturally or are caused by digging such as valleys, creeks, ponds, mines, etc.

Methods for landfill and solid extrudation in each pond may vary. It depends on the terrain of the area.

In landfill, this method requires evening the space. To make it easy to pave the waterproofing layer. This method must be provided as a clear pond with no overlay material.

It's a traditional landfill method.

No digging or compacting solid waste before. However, the compaction in the next layer is higher and higher until the required level is set.

This method of landfill requires separating the soil along the edges of the area into walls or edges, compacting solid waste, and preventing wastewater generated by degradation of waste from seeping outwards.

The characteristic of this method is that lowlands or where groundwater levels are slightly below the surface (up to 1 meter) cannot be dug up to remove soil because they can cause contamination of wastewater from solid waste into groundwater.