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TWIN LAKES DESIGN FRAMEWORK MANUAL PAGE :3 ~ Plant Materials: Ornamental trees such as Amur Maples and Flowering Crabs are to be used at entrances. They have moderate tolerance to deicing salts, interesting forms, seasonal color, and hardiness. Spreading Junipers and evergreen trees are suggested as base plantings and backdrops respectively around the ornamental entry .trees. The use of annual flower beds is encouraged at major access points. Shade trees should be located where they designate and frame entrances to individual sites. Sight lines should be maintained under shade tree canopies. Each entry should be defined by group plantings of a single species. 2. Perimeter/Screening Landscape Treatment :s. - Location~ a) Open space within setback areas between street right-of-way and buildings or parking lots. c) Open space between varied land uses and rear lot lines of single-family lots. d) Open space along lot lines separating land uses. Plant Materials: The primary function of the setback areas is to provide open space for landscaping. Vegetation and earth berming should buffer views to parking areas and frame views to buildings. The setback areas also provide space for site lighting, aignage, berming, and snow 8torage. The combined U8e of evergreen maasings, 8hrub massing, shade trees, and berming wiU provide a unifying, informal character throughout the 8tudy area. The functions of buffering and framing views can also be accomplished by using the evergreen, shrub, and berm combination. Minimum tree size is 2-1/2 inches caliper for dec.iduoua tree8 and 6' feet for evergreen trees. Interior Plantinas Locations: Building foundations, entryways, walkways, parking lots. All parking Iota wiU have planting islands installed within them that are a minimum of 180 square feet. AU parking &reas leas than 1S0 staUs shall include unpaved, landscaped ie1anda along driving aisles that aerve as primary circulation to the 8ite. In addition, landscaped i8lands ehall be provided every 225 feet or more of uninterrupted staUs. Interior parking landscape &rea trees shall be provided at the fate of one tree for each fifteen surface parking 8paces provided, or a fraction thereof. Parking area landscaping 8hall be contained in planting beds bordered by a faised concrete curb or equivalent approved by the Planning Commission.