CEQA requires the Commission as the designated lead agency to assess the potential environmental impact of a project in order that adverse effects are avoided, alternatives are investigated, and environmental quality is restored or enhanced to the fullest extent possible. STN will not be constructing any facilities for the purpose of providing interexchange services. Therefore, it can be seen with certainty that there is no possibility that granting this application will have an adverse effect upon the environment. Before it can construct facilities other than equipment to be installed in existing buildings or structures, STN must file for additional authority, and submit to any necessary CEQA review.