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2. Number of Plantings. The minimum number of overstory trees on <br /> any ~ven lot shall be as required below. These are minimum <br /> requirements that are typically supplemented with other understory <br /> trees, shrubs, flowers, and gound covers deemed appropriate for a <br /> complete quality landscape treatment of a lot. <br /> <br />i:' ReqU~ed pl:an~g ~pes: ~: ~ :: ;:f ;Requ~e'd::~umbe~: o~plan~gs: <br />Ovei~torY Deciduo~s/Conife;ous Trees i 2 trees per dWellin~-umt <br />Ot:na_mental Trees 2 u'..ees per each over'story tree <br />Shrubs I 6 trees per each overstory tree <br /> <br />Minimum Size of Plantings. Required trees shall be of the following <br />m/nimum planting size: <br /> <br /> 2.5 inches diameter as measured three feet above g-round <br />Coniferous Trees 6 feet in height <br />D~ciduous Shrubs 2 feet in height <br />Everg-reen Shrubs 2 feet in height or 2 feet in width, whichever applies <br />Ornamental Trees 1.5 inch diameter as measured three feet above g-round <br /> <br />~lanting type: <br />Deciduous Trees <br /> <br />Planting Types. Acceptable plantings shall be deten'rfined by the City <br />planting schedule. The compliment of trees fulfilling the landscaping <br />requirements shall not be less than 25% deciduous and not less than <br />25% coniferous. <br /> <br />Grading. Final slope gades shall not exceed 3.5:1 unless terracing of <br />retaining wails are approved. Berming for parking lots and open <br />space areas shall not exceed a slope of 3:1. <br /> <br />Required Ground Cover. In the R-3 Residential D/strict, all areas not <br />otherwise improved in accordance with approved site plans shall be <br />sodded. Noxious weeds do not constitute allowed ~ound cover in <br />any district. <br /> <br />Irrigation. All landscaped areas shall include undergound irrigation <br />systems. Exceptions to this requirement include landscaped areas that <br />are left in a natural state. <br /> <br />Open Space. Each townhouse development shall have at a minimum, <br />40% open space for the enjoyment of its residents that may be held as <br />private lots or in common areas. Qualifying areas include gassed <br />lawns, landscape areas, gardens, natural areas, landscape rock, mulch, <br />wetlands, and ponding areas. Of the 40% open space, 10% is to be <br />dedicated as an identifiable common area for use by residents of the <br />development. <br /> <br />Screening. <br /> <br />Buffery, ards. The table below establishes the minimum bufferyard <br />and additional plantings required when a higher density zoning <br />district is adjacent to a lower density, zoning district. The screening <br /> <br />-158- 17. <br /> <br /> <br />