Novokuznetsk city is one of the biggest industrial centres of Russian Federation. Enterprises of ferrous and non-ferrous metallurgy, coal-mining industry; heat and power generation, located within the city boundaries exert a significant impact on contamin ation of the environment objects. The major substances contamin ating the atmosphere are carbon dioxide, sulphur dioxide, nitrogen oxides, suspended substances, soot and benzo(a)pyrene. Zavodskoy district of the city, on the territory of which 27 enterprises are located, including the biggest enterprise of the ferrous metallurgy Evraz ZSMK JSC, affected by 76.6 % of all emis-