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The safe disposal of highly mineralized runoff in the development of indigenous diamond deposits in Western Yakutia is the most important task of ensuring a favorable geo-ecological situation in the region. Using the example of a large experimental material collected at the industrial site of the Udachninsky mining and processing plant, PJSC ALROSA, the geoecological situation in the area of underground drainage water disposal sites was assessed. Under the conditions of a complex and dynamic cryohydrogeological situation on the background of an increase in the volume of water inflow into the mine workings, the excess of the capacitive capabilities of the reservoirs of the storage tanks of the brine can lead to serious geoecological problems. Markers that identify the effects of highly mineralized water on the main abiotic components of the region's ecosystems – soil, bottom sediments and surface water – are strontium and lithium.

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