Soils show various resistances against electric current related to geographic position wherein they are and the minerals in their composition. Especially, in the rocky areas where the soil layer is thin and in the areas where pebbly sand is thick, the impedance of soil is high and related to this, permeability is low.
On the basis of grounding system, the aim is to conduct the electric current to the ground as soon as possible. For the grounding systems with high resistance of conduction to the earth, the bounce made by not discharged electrical charge does a great harm for life safety first and then property safety. For this purpose, especially the grounding of establishment and surge protectors (parafoudre) and the grounding resistance of communication systems must be less than 1 Ohm in accordance with the regulations.
In the areas where the grounding resistance is high, the only method to increase the conductivity is to use chemical compounds. The International corporations advise to use chemical compounds which decrease soil permeability resistance in this kind of soils. But, when these kind of chemical compounds are mixed with soil, they must have the specialties not changing the natural structure of soil, not contaminating subterranean and aboveground water sources and not spoiling the ecological balance of nature briefly.