Abstract. Study of Arctic soils and grounds ecological state is relevant on the one hand due to their industrial development, on the other hand due to the need to preserve natural landscapes considering their high sensitivity to technogenic impacts. This study is aimed at assessing soil and ground chemical and radiation pollution on the territory of the gold-silver deposit "Klyon" located in Chukotka permafrost zone. The level of metal content in soil and ground samples was found to differ from the world soil clarke insignificantly. Field measurements of gamma radiation flux on the deposit sites under development have shown external equivalent dose rate of the gamma radiation to be at the natural gamma background level. Laboratory tests of soil and ground samples have shown their radioactivity level to meet radiation safety standards for construction materials. Studying changes of soil and ground chemical and radiation pollution over time as part of local environmental monitoring is noted to be expedient.
The article gives the results of studies of the pollution level of soils, grounds, groundwater, water, and bottom sediments in water objects in Burnakovksyaya lowland in Nizhny Novgorod City as factors governing Volga water quality. The obtained data were used to reveal a polyelemental pollution of all environmental components in the study area with different levels, mostly caused by the past economic activity (accumulated damage to the environment). The present-day activity, primarily the accumulation of snow removed from city streets also contributes much to the pollution of the territory. The pollutants lying in the study area are carried out into the Volga by subsoil and surface water. A conclusion is made regarding the need to organize and perform works for clearing the territory of Burnakovskaya lowland to stop and prevent Volga pollution.
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