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SEC. 10. CERTIFICATE OF APPROPRIATENESS APPLICABILITY FOR ALTERATIONS TO EXCEPTIONALLY SIGNIFICANT INTERIOR PUBLIC SPACES. Pursuant to Section 1004(c)(1) of the City Planning Code, proposed alterations to exceptionally significant interiors of the following publicly owned buildings shall require a Certificate of Appropriateness: (a) San Francisco City Hall, 400 Van Ness Avenue (City Landmark No. 21 and a Contributory Building to the Historic District) shall comply with Sections 1006 and 1006.8(e) for any construction or alteration which requires a building permit for the following exceptionally significant interior public spaces which shall be designated and shall include: the Board of Supervisor's Chambers (Room C200); the Rotunda; and the Mayor's Office (Rooms D200, D205 and D209) including the Reception Room, inner corridors and offices and the Chief Administrator's Officers (C.A.O.'s) Offices (Room 289) which were previously designated under Ordinance No. 16-70, effective date, March 13, 1970. (b) The Main Library, 200 Larkin Street, a Contributory Building to the Historic District. The following exceptionally significant interior public spaces shall be designated: the Monumental Grand Staircase (Room S101), the Main Entrance Hall and Vestibule, (Rooms 101 and 191); the Monumental Public Corridors and Balcony Spaces including the Gottardo Piazzoni Murals in Public Corridor 290 (Rooms 190, 192, 193, 290 and 291A); and the Main Program Spaces (Rooms 200, 201, 202, 203, 210 and 218). (c) The Public Health Department, 101 Grove Street, a Contributory Building to the Historic District. The following exceptionally significant interior public spaces shall be designated: the Main Entry and Elevator Lobby; the Marble Lined Corridors (All Floors) and the Third Floor Board Meeting Room/Auditorium. (d) No other sites, buildings, structures and objects have exceptionally significant interior public spaces and would be subject to this Section. (Added by Ord. 413-94, App. 12/23/94) SEC. 11. SIGNIFICANCE OF INDIVIDUAL BUILDINGS TO THE HISTORIC DISTRICT. The history of each parcel within the Historic District is documented in Appendix A: Survey of Parcels, and is included in the San Francisco Civic Center Historic District Case Report as readopted by the Landmarks Board on October 6, 1993 by Resolution No. 454 and as amended and readopted by the City Planning Commission on July 7, 1994 by Resolution No. 13719 and is located in Board of Supervisors File No. 115-94-10. Each building is assigned a finding from the three following categories: 1. Contributory.This category identifies buildings which date from the Historic District's period of significance (1906 to 1936) which reflect a Beaux Arts style and which retain their historic and architectural integrity. These structures are of the highest importance in maintaining the character of the Historic District. Recognizing the unique character of this Historic District which is derived from its expression of an historic plan, some structures within the Historic District may date from the Historic District's period of significance but do not contribute to the intended original plan in their architecture, detailing, height or scale. Such buildings are designated noncontributory and may be considered for replacement with structures designed in a monumental style and manner which would complete the San Francisco Civic Center Plan as originally conceived. The following buildings are deemed Contributory to the Historic District: Newton Tharp Commercial High School, 170 Fell Street, Lot 1 within Assessor's Block 815; (a portion of Landmark No. 140), Federal Building, 50 Fulton Street, (50 United Nations Plaza) Lot 35 within Assessor's Block 351; Exposition Auditorium, 99 Grove Street, Assessor's Block 812; Department of Public Health, 101 Grove Street/50 Ivy/Lech Walesa Street, Lot 1 in Assessor's Block 811; San Francisco Public Library, 200 Larkin Street, Lot 1 in Assessor's Block 353; Orpheum Theater Building, 1182 - 92 Market Street, Lot 22 in Assessor's Block 351; 1212 Market Street, Lot 3 in Assessor's Block 355; 1240 - 1242 Market Street, Lot 6 in Assessor's Block 355; Hotel Avalon, 1272 - 1276 Market Street, Lot 9 in Assessor's Block 355; 1278 - 1298 Market Street, Lot 10 in Assessor's Block 355; Methodist Book Concern, 83 McAllister Street, Lot 32 in Assessor's Block 351; Old State Office Building, 50 McAllister Street, Lot 2 in Assessor's Block 765; Barbara Apartments, 580 McAllister Street, Lot 8 in Assessor's Block 767; 1 United Nations Plaza (35 - 57 Fulton Street); Lot 37 in Assessor's Block 351; the High School of Commerce, 135 Van Ness Avenue, (a portion of Landmark No. 140), Lot 1 in Assessor's Block 815; War Memorial Opera House, 301 Van Ness Avenue (a portion of Landmark No. 84), Lot 1 in Assessor's Block 786; San Francisco City Hall, 400 Van Ness Avenue (Landmark No. 21), Lot 1 in Assessor's Block 787; War Memorial Veteran's Building, 401 Van Ness Avenue (a portion of Landmark No. 84), Lot 1 in Assessor's Block 786; and, the Corinthian Court Apartments, 500 - 524 Van Ness Avenue, Lot 6 in Assessor's Block 766.