Geological work and land suitability studies of 27 districts according to 1/5000 scale reconstruction plan within the boundary of İstanbul Metropolitan Municipality is completed by our Directorate  and approved by the General Directorate of Disaster Affairs. 1/25000 and 1/5000 scale geological studies are completed in new defined 5216 İstanbul city border. Work undertaken in previous boundary will have revisions at the end of 2008.