Hydrogeological Modeling of the Spread of Pollution from the Historical Landfill Towards the Lakhta Spill, St. Petersburg, Russia

Abstract

Abstract Nowadays, the areas subjected to severe anthropogenic disturbance, such as waste landfills, do not meet both the environmental and human health standards and are associated with concepts of "environmental degradation", "pollution" and "environmental risk". In turn, the geochemical influence is associated with almost all types of technogenesis, has a widespread occurrence, occurs during the entire period of use of the territory and affects all components of the natural complex. Taking into account both geological and hydrogeological features of the study areas, predictions of contaminants migration from the historical waste landfills of St. Petersburg to the catchment area of the Gulf of Finland have been compiled. The results demonstrated the usefulness of a step-by-step method, involving increasingly detailed geochemical "portraits" of anthropogenically modified objects, as well as the creation of training geochemical set to predict the changes of functional zones contour.