["ARTICLE 1520", "NOTE:\nNO BUILDING SHALL RISE ABOVE EITHER (a) THE 30 FEET, 50 FOOT AND 70 FEET HEIGHT LIMITS FOR THE AREAS SPECIFIED ABOVE, OR (b) THE FLIGHT ANGLE SET FORTH ABOVE, WHICHEVER IS HIGHER.", "SCALE: VERTICAL = 100 FT HORIZONTAL = ¼ MILE", "ILLUSTRATION OF SECTION 1510", "## 1520. Height Regulations Around Minor Airports", "1521. DESIGNATION OF APPROACH AREAS. For all airports not subject to the provisions of sections 1511, 1514, the City Planning Commission may designate \"Airport Approach Areas.\" In designating such \"Airport Approach Areas,\" the Commission shall specify appropriate limitations on the height of buildings in such areas, in conformity with the applicable regulations of the Civil Aeronautics Administration relating to the construction and operation of such airports; and with due consideration for the types of airplanes using such airports and the resulting need to protect the public safety.", "However, such \"Airport Approach Areas\" shall not be extended more than one-half (½) mile beyond the end of any runway; and the height limitations established in such \"Airport Approach Areas\" shall not prohibit the construction of any building or other structure less than thirty (30) feet above the filed grade; or (if no filed grade has been established) less than thirty (30) feet above the existing natural grade level.", "1522. CONFORMITY WITH HEIGHT REGULATIONS. Subject to the provisions of section 1523 but notwithstanding any other section of this amended Resolution, the highest projection of any building or other structure shall not rise above the maximum height specified in the height limitations set forth for the \"Airport Approach Area.\"", "A map showing the approximate maximum height to which any building or other structure may be built within the area subject to the controls set forth above is on file with the Department of City Planning, Division of Mapping and Zoning.", "1523. MODIFICATION OF PROVISIONS. The Board of Standards and Appeals may modify the above requirements in accordance with the provisions of section 1651.52.", "## 1530. Height Regulations Around Small Parks.", "Where zoning lots in an RA, an RB or an RM District or in Residence Retail Districts adjoin any public park with an area between one (1) and fifteen (15) acres except any tract of land used exclusively for playground or parkway purposes, the following regulations shall apply for all zoning lots along such public park.", "1531. MEASUREMENT OF ANGLE OF LIGHT OBSTRUCTION. The angle of light obstruction shall in all cases be measured from the center line of the street bordering on such public park, or from the boundary of the public park itself if there is no bordering street or the public park itself if there is