Temporary use permit. Recognizing that it may be in accordance with the purpose of this chapter to permit temporary activities for a limited period of time, which activities may not be permitted by other provisions of this chapter, the Zoning Board is hereby empowered to grant temporary use permits. The Board shall determine if such uses are of such a nature, and said temporary use permits shall state the condition attached to the approval of the temporary use. The Board shall determine if such uses are of such a nature and are so located that, at the time of petition, they will in no way exert a detrimental effect upon the uses of land and the activities normally permitted in the zone or that said uses contribute materially to the general welfare of the Township of Franklin, particularly in a state of emergency, under conditions peculiar to the time and place involved. Upon such determination, the Zoning Board shall direct the Subcode Official to issue a building permit for a period not to exceed six months; such period may be extended not more than once for an additional period of six months by the Zoning Board.