ABSTRACT
The oil production facilities of TatNIPIneft Institute – PJSC Tatneft are situated in a region of high agricultural activity, arable lands occupy more than 80% of the area. So, land protection and recultivation of disturbed soils are an important task. Soils are considered polluted, when the concentration of oil products reaches value that leads to negative ecological changes in environment. Oil and oil products disturb ecological state of soils and deform the structure of biocommunity. Permissible level of oil content in soils means that somewhat significant negative influence on surrounding environments – atmosphere, surface and ground water, flora, soil biota – is not observed. This paper presents the normative standard for permissible residual oil content and products of oil transformation in agricultural soils in the Republic of Tatarstan after recultivation and restoration. Methods of investigations of oil polluted soils to achieve the desired goals are also discussed.
