Ordinance amending the Planning Code to exempt from the limitations on conversion of certain Production, Distribution and Repair (“PDR”), Institutional Community, and Arts Activities uses in the Eastern Neighborhoods Plans Areas (Mission, Eastern SoMa, Western SoMa, and Central SoMa), changes of use from one of those uses to another of those uses or to Institutional uses, in buildings under 25,000 ground floor square feet; 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.