Issues related to storage and elimination of obsolete pesticides concern all developing countries. Eastern Europe is a region with the largest stocks in the world. In Poland, the problem with obsolete pesticides has its roots in history. Storage sites and containers in which obsolete pesticides were deposited posed, or continue to pose, a threat to the environment. The spatial conditions, particularly land features and features of the object, can actually increase environment risk. The proposed algorithm makes it possible to distinguish areas where poisonous substances posing the greatest threat to the environment are stored. This knowledge will help to determine the priorities for waste removal and monitoring of environmental receptors.