[en] The siting of the large electron-positron (LEP) accelerator, its experimental areas, and its supporting infrastructure are discussed with respect to the radiological impact on the surrounding areas and on the population in the Pays de Gex and the Canton de Geneve. The final conclusions are based on work done by the former LEP Study Group and by the LEP Radiation Working Group. The calculations and estimates show that the stray ionizing radiation, the radioactivity, and the radiation-induced noxious chemical products released by the LEP installation will have only an insignificant impact on the area, the individual members of the public, and the population as a whole. This result for LEP 'phase 85' can also be extrapolated under reasonable assumptions for LEP 125 - a possible future development phase of the present project. (orig.)