05/12/2010 P&Z Packet - Laserfiche WebLink

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Attachment 2: Landscaping and Tree Preservation Standards Page 9 Groundcovers shall be turf, perennials, annuals, small grasses, or low spreading shrubs. Type of groundcover should be determined by site conditions and anticipated use. Mulch is acceptable in landscape beds and areas not suitable for living groundcovers. iv. Hardy perennial forbs and ornamental grasses should be used in car overhang areas and places where snow may be stored. 4) Annual plantings should be minimized within 10' of a tree. The process of frequently replanting may damage the tree's shallow root system. 5) Seed mixes should be used in large expanses of naturalized areas. The City shall maintain a list of approved seed mixes. Where seed mixes are used, the City may request that visible edge treatments be planted with more deliberate groupings of flowering plants. 6) A permanent solid edge such as a 6" concrete, stone or other barrier is required between native seeded areas and turf unless otherwise approved by the City. b. Planting Requirements: 1) To promote development of a large, healthy canopy, trees shall be planted in accordance with the requirements in the following table and illustration: Planting Requirements Minimum island width for roots (back of curb to back of curb) Minimum tree opening Minimum planting soil Minimum cubic feet of soil available per tree in a single bed Minimur cubic feet of soil available per tree in a shared bed c three sided island Large Tree 9' -0" 4'x6'or 5' x 5' 24" 400 CF 325 CF Medium Tree 6' -0" 4'x6'or 5' x 5' 24" 250 CF 215 CF Ti 5' -0" 4' x 5' 18" 180 CF 135 CF 16' typicat car space Calculate planting soil wc«lume b ength x Width x Depth Engineered Planting Soil Minimum Island Width dimension can be reduced to the Minimum Tree Opening dimension if reath adjacent hardscape to achieve required engineered planting soils are us