2008-09-17 Jnt. Work Session Packet

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District Overstory Trees Foundation Plantings4 NOTES: 1 Trees shall be deciduous and planted at the boulevard, except on culs-de-sac where one of the required trees may be planted off the boulevard but in the front yard area. 1_ _ _ _ _ _ _ _ _ _ _ _ _ - 2 Trees shall be deciduous. Unit exposures with street frontage shall be planted at the boulevar 3 Tree spacing must include trees at the boulevard at minimum 50-foot intervals. 4 The calculation for the number of foundation plantings is based upon one planting for each lin foot of building perimeter and parking lot perimeter. Plantings may be grouped rather than dispersed at 10-foot intervals. 5 The required number of trees is based upon a minimum of eight trees or one tree per 3,000 square feet of site area, whichever is greater. Tree spacing must include trees at the boulevard at mirIimum 50-foot irItervals. (B) Minimum standards. (1) Overstory trees: (a) Deciduous trees. Two and one-half inch caliper planting size, balled and burlapped. (b) Coniferous trees. Six feet in height planting size, balled and burlapped. (2) Foundation plantings. Coniferous and deciduous shrubs shall be planted at a minimum of 1/3 the mature spread and height of typical growth habits. (3) Boulevard trees. All boulevard trees shall be hardwood shade trees or flowering trees. Where overhead power lines exist only low growing varieties approved for planting under power lines shall be allowed. (4) Overstory mix. When multiple quantities of overstory trees are required, at least 75 percent of the trees required shall be deciduous trees. (5) Hardiness. All landscape materials proposed shall be consistent with Minnesota Hardiness Zones, whether indigenous or foreign. Plant species must all be tolerant to snow storage, exposure to salt and sun scald in parking areas. (6) Diversification. In any development in which at least eight overstory trees 56