Ordinance amending the Planning Code to designate 2 Henry Adams Street (the Dunham, Carrigan & Hayden Building), Assessor’s Parcel Block No. 3910, Lot No. 001, as a Landmark under Article 10 of the Planning Code; affirming the Planning Department’s determination under the California Environmental Quality Act; and making findings of consistency with the General Plan, and the eight priority policies of Planning Code, Section 101.1, and findings of public necessity, convenience, and welfare under P