Screening is the initial stage of strategic environmental assessment (SEA). Screening aims to answer if further application of SEA is needed. The procedure for SEA screening is defined in international documents (SEA Protocol and SEA Directive), however their provisions are very general and leave certain freedom of interpretation. The responsibility to develop SEA screening criteria and define it in national laws rests on each member-state. Screening approaches and types of screening systems vary greatly. There are experienced countries and there are states which are still in the beginning of...