As soils are only resilient to a limited extent and cannot be reproduced, soil protection is an important task for the state, local authorities, associations and every individual citizen. Once it has been destroyed, in many cases it cannot be restored. Therefore, the functions of soil in the ecosystem must be sustainably protected or restored.
To this end, harmful changes to the soil must be prevented, soil and contaminated sites as well as water pollution caused by these must be remediated and precautions must be taken against adverse effects on the soil. Property owners must prevent (soil, soil air and groundwater) contamination and, if necessary, remediate it.
A farmer who wants to fill his field with high-quality excavated soil for the purpose of soil improvement, for example, requires a building and nature conservation permit. This regulates the requirements in terms of material quality and construction work in order to ensure that the functions of the soil are safeguarded.
You can find more information on backfillinghere.