A scientific, methodological and software and information base for the organization of environmental monitoring of potentially hazardous objects was created. The normative-methodical materials establishing the subject, content and order of organization of local monitoring on the objects of high ecological risk and in the zone of their direct influence were developed. The structure and composition of the information-analytical system with the use of geoinformation technologies were determined. The software of the data bank "Territorial register of potentially dangerous objects" was created.