Abstract
This paper presents the evaluation of risky substance loads in the Czech agricultural land. The groups of potentially risky elements (REs) and persistent organic pollutants (POPs) are evaluated separately due to their characteristic differences and prevailing source of contamination. Risks deriving from increased RE and POPs soil loads could be controlled by the system of limit values. The limit values could be separated into two groups, the limits for REs and POPs contents in the soil and the limits regulating inputs of REs and POPs into the soil. The limit values system is based on the hierarchical limits from background values of REs and POPs in soils to the limits linked with particular risks and eventually to sanitary limits. The limit values regulating the entry of REs and POPs into the soils of the Czech Republic in case of fertilisers and additional soil substances are congruent with national Laws (Law No. 156/1998 of the Code of Law of the Czech Republic – subsequently amended) and sewage sludge (Directive from the Ministry of Environment No. 382/2001 of the Code of Law of the Czech Republic about conditions of modified sewage sludge application on agricultural land). The legislative regulation of the application of ponds and river sediments on agricultural land is under preparation.
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