Where required by this chapter or deemed desirable by the Board of Appeals, a special permit shall be limited in time to permit periodic review in the light of the established character of the permitted operation and its effect upon the community and in view of changing conditions. Where maximum periods for such renewable permits are stated herein, the Board may require shorter, but not longer, periods. After 75% or such other percent as may be specified, of the permit time period has elapsed, an application for a renewal of the permit may be submitted. Such renewal shall be processed in a similar manner as new permits, with advertising a public bearing required. Prior to renewing such a permit, a member or representative of the Board shall inspect the site and report as to compliance with the general intent and specific requirements of the permit. Such report shall be entered in the record and given due consideration relative to the requested renewal.