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<br />c. Tree spacing must include trees at the boulevard at minnmun fifty (50) foot intervals. <br /> <br />d. The calculation for the number of foundation plantings is based upon one (1) planting for <br />each lineal foot of building perimeter and parking lot perimeter. Plantings may be grouped <br />rather than dispersed at ten (10) foot intervals. <br /> <br />e. The required number of trees is based upon a minimum of eight (8) trees ot one (1) tree per <br />three thousand (3,000) square feet (SF) of site area, whichever is greater. Tree spacing <br />must include trees at the boulevard at a minimum offifty (50) foot intervals. <br /> <br />2. Overstory Trees. <br />a. Deciduous Trees. Two and one half (2 Y2) inch caliper diameter <br />planting size, balled and burlapped. <br /> <br />b. Coniferous Trees. Six (6) feet in height planting size, balled and <br />burlapped. <br /> <br />3. Foundation Plantings. Coniferous and deciduous shrubs shall be planted at a <br />minimmn of one-third (113) the mature spread and height of typical growth <br />habits. <br /> <br />4. Boulevard Trees. All boulevard trees shall be hardwood shade trees or <br />flowering trees. <br /> <br />5. Overstory Mix. When multiple quantities of overstory trees are required, at least <br />seventy-five percent (75%) of the trees required shall be deciduous. <br /> <br />6. Hardiness. All landscape materials proposed shall be consistent with Minnesota <br />Hardiness Zones, whether indigenous or foreign. Plant species must all be <br />tolerant to snow storage, exposure to salt and sun scald in parking areas. <br /> <br />7. Diversification. In any development in which at least eight (8) overstory trees or <br />foundation plantings are required, at least three (3) varieties of boulevard trees <br />are required on each side of the block. <br /> <br />8. Warranty. All required landscape materials shall be warranted for growth for a <br />miillmum of two (2) years after planting. <br /> <br />422.15 Screening. Screening may be accomplished with a wall. fence. berm or other <br />landscape feature. or plantings which will provide opacity of 80% within <br />three years of planting. Planting type and screen design are subject to Planning <br />and Zoning Commission review and City Council approval. Screening is <br />required on B~ 1 and I district property which abuts any property in a residential <br />district. The Council may require screening on high density residential property <br />which abutsR-l. R-2 and R-2A. <br /> <br />12 <br />