All uses existing on the effective date of this Zoning Ordinance shall conform to these performance requirements within two (2) years, provided, that an extension of up to six (6) months may be granted by the Board of Zoning and Building Appeals. The Board may grant extensions if the owner or operator of the use can demonstrate that compliance would create an unreasonable hardship. (Ord. 1986-06. Passed 5-27-86.)