The IV layer is lined with basalt tuffs and tuffobrecchia. Overburden is represented (bottom / up) by limestone,the chalk and marls of the Turonian tier of the upper chalk system; clay, loam, loam,sands and soil / plant layer of Quaternary age. The average power of overburden - 10.5 m,including rock opening - 0.6 m. The mineral water is flooded. There are aquifers: unpressurized atQuaternary fluvioglacial deposits and pressure in the Upper Cretaceous and Proterozoic sediments.