Ordinance amending the Planning Code to revise the size threshold for when a mezzanine is considered a separate story from one-third to one-half of the floor area of the story or room in which the mezzanine is located; affirming the Planning Department’s determination under the California Environmental Quality Act; making findings of consistency with the General Plan, and the eight priority policies of Planning Code, Section, 101.1; and making findings of public convenience, necessity, and welfare under Planning Code, Section 302.