Ordinance amending the Planning Code to require compliance with the procedures of Planning Code, Article 10, for certain work involving a business sign on a designated landmark site or in a designated historic district, and to require a hearing before the Historic Preservation Commission rather than an administrative review by Planning Department staff of applications for a permit to install business signs to a Significant or Contributory building or a building in a Conservation District in the C-3 (Downtown) area, provided that the permit is for a Major Alteration; affirming the Planning Department’s determination under the California Environmental Quality Act; and making public necessity, convenience, and welfare findings under Planning Code, Section 302, and findings of consistency with the General Plan, and the eight priority policies of Planning Code, Section 101.1.