Tailings Storage Facility No. 1 of the Ak-Tyuz Mining Administration
Object name: Tailings Storage Facility No. 1 of the Ak-Tyuz Mining Administration
Ownership (owner) of the object: Ministry of Emergency Situations of the Kyrgyz Republic
Location of the object: slope of the left bank of the Kichi-Kemin River valley
Region: Chui
City (settlement): settlement of Ak-Tyuz
Geographic coordinates of the object or settlement:
Elevation (m): 2140
Period of operation and conservation: 1942 - 1955, conserved in 1956
Current technical condition of the object: surface of the tailings storage facility is disturbed, the base is not lined, filtration through the dam.
Characteristics of the object: hydraulic tailings storage facility
Volume of waste (thousand m3): 371
Area (thousand m2): 60
Type and kinds of waste: tailings from rare earth production, containing thorium and heavy metals
Chemical composition of waste: Th – (121-70 667) ppm, Zr – (1274-4787) ppm, Pb – (4637-16 169) ppm, As – (400-927) ppm, Be – (70-10)5 ppm, Cd – (7-24) ppm, Cu – (455-2473) ppm, La – (234-2254) ppm, Mo – (173-274) ppm, Sb – (82-237) ppm, W – (213-359) ppm.
Impact of waste on the environment and population: severe contamination of soil, surface waters, and vegetation with thorium, lead, and other heavy metals.
Radiation characteristics (Exposure Dose Rate (EDR) of gamma radiation at the surface, radon, activity, etc.): 65-1140 µR/hour, total activity – 1,300 Ci.
Vulnerability of the object to hazardous natural processes and disasters: water and wind erosion, slope runoff.
Seismicity of the area: 9 points
Transboundary impact of the object: contamination of the Kichi-Kemin River bed with thorium and heavy metals – a tributary of the transboundary Chu River.
Recommendations for ensuring safety and/or rehabilitation of the object: comprehensive reclamation of Tailings Storage Facility No. 1 and decontamination of the adjacent area, environmental monitoring.
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