1 REVITALIZATION CONCEPTS FOR SAND MINE PIT IN SOUTHERN POLAND: PRELIMINARY ASSESSMENT OF IMPACT ON AQUATIC ENVIRONMENT

The paper describes briefly the hydrogeological situation of the sand mine “Maczki-Bór”. This mine is located in southern Poland, in the eastern part of Upper Silesian Coal Basin. The mine is divided into 2 fields: “Bór-Zachód ” in the West and “Bór-Wschód ” in the East. The sand has been used mainly for deep coal mine backfilling. The exploitation started at first in the western field, already before Second World War. The eastern field has been exploited since 1972 until now, whereas the exploitation in the western field stopped in the middle of 1990s. In the area of “Maczki-Bór ” sand mine the groundwater flow appears mainly in Quaternary sands and Triassic limestones and dolomites. Carboniferous claystones and mudstones as well as the Lower Triassic clays are the main aquitards of the area. The most important groundwater aquifers of the area are Quaternary and Triassic aquifers. The preliminary assessment of the impact of 3 different revitalization concepts on the aquatic environment is reported in this paper