In granting any variance or special exception, the Board may attach such reasonable conditions and safeguards, in addition to those expressed in this chapter, as it may deem necessary to implement the purposes of the Municipalities Planning Code and the Zoning Ordinance, which conditions and safeguards may relate to, but are not limited to, aesthetics, screening, lighting, noise, safety and the minimizing of noxious, offensive or hazardous elements. Each special exception shall be clearly authorized by a provision of this chapter and shall comply with any more specific standards relating to such exception contained in this chapter.