Any person who is engaged in the operation of any establishment, business, operation or activity regulated by this title (as of April 8, 1976) shall apply for such permit, license and/or registration as required within ninety days following the April 8, 1976, effective date of the ordinance codified in this title, unless another time is expressed herein. Thereafter it shall be unlawful for any person to continue to engage in such operation or activity without such permit, license and/or registration. (Ord. 4883-NS § 1 Exhibit A, Ch. 1 Art. 1 § 6, 1976)