9Th International Scientific-Technical Conference on Environmental Engineering, Photogrammetry, Geoinformatics - Modern Technologies and Development Perspectives, Eepg Tech 2019, Date: 17 September 2019 through 20 September 2019, Patrocinadores: Concrete Products Plant Wojciech Trykacz from Lucka near Lubartow;Grundfos Pompy Sp. z o.o. from Baranow near Poznan;Hydro-Vacuum S.A. from Grudziadz and Sanitmal Design and Executive Company inz. Arkadiusz Malik from Lublin;Naleczow Zdroj S.A. - Drzewce near Naleczow;Prestige from Poznan