These standards are intended to provide the Planning Board with a guide for the purpose of reviewing applications for conditional use as provided for by this chapter. In reviewing an application, the Planning Board may act on site plans submitted to it or may suggest modifications and changes. In approving an application, the Planning Board may require in addition to features specified, such other features or design, in keeping with the intent thereof, that will further the purposes of these standards and regulations. Such features shall be provided and maintained as a condition of the establishment and maintenance of any use to which they are a condition of approval.