Abstract
This article considers the issues of contamination with man-made radionuclides in the land of the city of Semipalatinsk. The purpose of accounting for the impact of land contamination with radionuclides is the assessment of the degree of impact of secondary contamination of urban areas and the definition of the boundary of this contamination, affecting the cadastral value. Factors contributing to the spread of pollution, such as in a coal warehouse, as well as in the burning of coal, during delivery, on automobile roads, which delivers coal to industrial enterprises, boiler-houses and the consumer sector. The sources of secondary pollution, which are located in the city, are considered. It has been established that the cadastral value will have an impact on the level of contamination of the land plot with man-made radionuclides. It is proposed to supplement the boundary plan of contaminated land plots.