OUTDOOR RECREATION AREA: Means an outdoor area designed for recreational use and available for use by all occupants of a residential complex. UNDERGROUND STRUCTURE: Means a building or structure, or portion of a building or structure, with a floor located below finished grade and no point higher than 0.6 metres above finished grade. UNIT DENSITY: Means the figure obtained by dividing the number of dwelling units on that lot by the total surface area of the lot.” The definition of “height” in Section 101 of the Zoning Bylaw is amended by deleting the phrase ' ‘average finished ground level at the perimeter” and substituting the phrase “finished grade". 3. Section 502(3)(d) of the Zoning Bylaw is deleted and replaced as follows: "(d) An underground structure may be sited in any portion of a lot, provided that any part of an underground structure located above finished grade shall be set back not less than 1.2 m (4 ft.) from every lot boundary. No underground structure shall be located within 5.0 m (16 ft.) of any land with a grade in excess of 20%” 4. The following provisions are added as Sections 510 and 511 of the Zoning Bylaw: "510. RECREATION AREAS (a) Outdoor recreation areas may be located at ground level, on a deck, or on a roof top. An outdoor recreation area shall have a minimum area of 35.0 m2 (375 sq. ft.) anda minimum width of 5.5 m (18 ft.). | . Indoor recreation areas may be located on any level of a building and shall have a minimum area of 20.0 m2 (215 sq. ft.) and a minimum width of 3.5 m (12 ft.). RESIDENTIAL FLOOR AREA RATIOS: In the calculation of the floor area ratio of a residential development, entrances, stairwells and hallways common to more than one dwelling unit, balconies and areas within an underground structure shall be excluded, notwithstanding the definition of floor area in Section 101.”