The results of expeditionary and laboratory studies of the radiation situation of 2001–2002 and dosimetry measurements of 2017 are presented. there are small radioactive spots. The radionuclide composition in the soil-vegetation cover of the impact zones of the underground nuclear explosion has been studied. Data obtained prior to the industrial development of the field are reperator for further radioecological research and can be used by subsoil users in the development of the area.

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In Western Yakutia, the largest oil and gas fields are concentrated, on which several subsoil users currently work. Due to the intensive use of water by oil and gas companies for industrial purposes, the construction of transport infrastructure, a significant impact on the state of surface water is occur. An assessment of the ecogeochemical state of small rivers located on the territory of oil and gas industry impact in Mirny district was carried out. It is revealed that the construction of water intakes can lead to changes in the mineral composition of surface water. Road construction has a significant exposure on the ecological condition of rivers. The results indicated increased concentrations of heavy metals such as iron, zinc, copper, aluminium, manganese in the studied rivers.