Geophysical studies of the area of groundwater pollution in Verkh-Neyvinsky village

Abstract

The purpose of the research. The ecology of human habitation implies the absence of any pollution of the natural environment and special requirements are imposed on the quality of air and water. In this regard, the purpose of the research is to determine the sources of pollution of drinking water, the area of its distribution and the depth of contamination of the fracture space of rocks, as well as to give recommendations on how to more quickly eliminate pollution of the water basin. Methodology. In the course of the research, geophysical studies were carried out using the method of vertical electrical sounding of the coast of the Verkh-Neyvinsky pond, on the territory of which there is a gas station of BNP (Bashkirnefteprodukt). The area of contamination with oil products was outlined, and the depth of penetration of oil products was assessed. The work was performed using the ERA-MAX equipment with a standard set of active electrodes. Sections of electrical resistivity were constructed, which can be associated with the boundaries of the area and deep penetration of oil products along the fracture zones. Results. The results of the 2021 work confirmed the area of contamination previously made by the Gidrospetsgeologiya organization based on water analyzes from surface samples performed in 2017, and made it possible to assess the depth and presence of surface and underground pollution. Conclusions. Comparison of the area of pollution by oil products, in particular gasoline, is a complex environmental problem and requires a long time to eliminate pollution. Most of the existing literature describes cases of oil pollution. The problem of gasoline pollution elimination is more complicated due to significantly different coefficients of kinematic viscosity of oils and gasolines; therefore, the gasoline pollution area has a significantly larger size and depth. Recommendations are given for a more rational way to eliminate pollution.