The Map is based on the assessment of the soil functions as shown in the Environmental Atlas Maps 01.12.1 through 01.12.5 (Edition 2018) . The soil association Map 01.01 (Edition 2018) was also used. Information on the danger of toxic wastes, i.e. from war debris soil associations, sewage farms and railway tracks was extracted from it.
The data (impervious coverage, track gravel is considered impervious) of the Environmental Atlas Map 01.02 (Edition 2017) was used to present the impervious coverage classes.