In the sense of the Luxembourg summit resolution in April 1998 the analytical investigation of the European legislation has started in Brussels (so called process of screening interviews). The analytical investigation of the acquis has proceeded in two stages till present. The first stage consisted of the introduction the whole European Union legislation, including the environment, to all candidate countries. The second stage of the screening was organized on a bilateral level with individual associated countries. The screening in the Slovak and Czech Republics revealed that a degree of harmonization of the Slovak law with the European one is different in particular areas. The European Union considers environmental law as much wider sphere than it is in the Slovak and Czech Republics. It includes horizontal legislative, air quality, waste management, water quality, nature conservation, industrial pollution control and risk management, chemical materials and genetically modified organisms, noise from cars and machines, nuclear safety and radiation protection. Results from the screening for law transposition were reflected to the legislative plans of the Slovak and Czech Ministries of Environment and the legislative plans of the Governments as well.