The article presents the results of a study on the selection of materials based on local raw materials to reduce the risk of radioactive contamination in Digmay tailing pond in Republic of Tajikistan. One of problem with long-term storage of uranium production waste is the formation of radon – a radioactive gas that poses a serious threat to public health and the environment. The particular relevance of this problem lies in the fact that the tailings storage facility, as a source of radon, is located in close proximity to populated areas. Analysis of radon monitoring data in the Digmay tailing pond area indicates its state of increased radon hazard. The radon volume activity in different areas of the tailings storage facility varies from 50 to 680 Bq/m³, and the radon flux density ranges from 0.5 to 17 Bq/m²·s. The estimated annual radon emission from the tailings storage facility surface was found to be on the order of 201.52 TBq/year. The paper examines various surface covering models for tailings storage facilities aimed at reducing radon exhalation. Neutral soil and a composite mixture based on local raw materials were used as a protective barrier. The optimal parameters for the protective layer thickness have been determined. It has been established that with a radon barrier thickness of 0.45 m, a tenfold reduction in radon concentration is achieved (from 576 to 56 Bq/m³), while the radon flux density decreases by a factor of 21 compared to the initial values. The proposed model contributes to preventing environmental pollution by radon decay products, highlighting the need for a comprehensive approach to radioactive waste management.