Upon application to and issuance by the Zoning Administrator of a permit thereof, the following use may be operated as a temporary use: processing, screening, washing yards and plants of the quasi-temporary nature connected with the construction of roads which are normally removed when a specific purpose is completed, are permitted under this classification after a permit is obtained from the Building Officer. This permit shall be effective for a period not to exceed six continuous months and shall not be renewed for more than one successive period at the same location.