I.-The representative of the State in the département shall draw up a plan defining the public utility easements, from among those provided for in article L. 1333-26, designed to limit the risks associated with environmental pollution due to the presence of radioactive substances or the exposure of persons to ionising radiation that may result therefrom.
II – The perimeter of the public utility easements is delimited taking into account the characteristics of the plots, in particular the topography, hydrography, hydrogeology, plant cover, existing buildings and roads.