In recognition that certain necessary specific uses may be, or become, inimical to the public health, safety and general welfare of the Borough if located without due consideration to the existing conditions and surroundings, the following standards and procedures are hereby established for uses designated, as conditional uses. These standards are intended to provide the Land Use Board with a guide for the purpose of reviewing and deciding upon certain uses not otherwise permitted except under restrictions of this section. In approving a site plan for a conditional use, the Land Use Board may suggest modifications and changes. Such changes and modifications, as well as original provisions of the site plans which have not been modified, shall be maintained as a condition of the establishment and maintenance of any use to which they are appurtenant.