Agenda - Planning Commission - 06/16/2004 - Special Meeting

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Town Center 4th Addition - Site Plan/NAU June 11,2004 Page 3 o1:6 Landscaping: City Code requires one (1) tree per every fifty (50).lineal feet of site perimeter or 1,000 square feet of building coverage, whichever is greater, be planted tl'u'oughout the site. A portion of these trees should be installed along the public road frontage at no greater than thirty-five (35) feet on center. City Code also requires that no less than 25% of the trees planted be deciduous and no less than 25% coniferous. Furthermorel City Code requires that no more than 25% of the trees planted consist of ornamental trees. Parking lot landscaping is also required, one (1) tree per every ten ('10) parking stalls. In addition to the tree requirements, City Code also.states that one (1) shrub per every thirty (30) lineal ~eet of site perimeter or 300 square feet of building coverage, whichever is greater, be planted. Site Land, s'cc. tping The total building coverage on the property is 21,584 square feet, which equates to a minimum of twenty-one (2 l) trees and seventy-two (72) shrubs needing to be installed. Of the trees, a minimum of eight (8) should be installed along 145th Ave to satisfy the public road frontage planting requirement. The Town Center master streetscape includes parkway trees along both Sunwood Dr and Peridot St, which satist¥ the public road frontage requirements along both of those streets. The current landscaping plan includes twenty-one (21) trees and 134 shrubs (five of the oversto~ trees appear to be utilized to satisfy the parking lot requirements). The sizes and species indicated in the species palette all meet the minimum standards specified in City.Code except for the Japanese Tree Lilac. The species palette shows the size of'the Japanese Tree Lilac as a 2 gallon container, however, City Code requires ornamental trees to be at least 1.5 inches in diameter. Also, a mirfimum of one additional evergreen tree should be included so that at least 25% of the plantings are coniferous. Furihermore, there should not be more than five (5) ornamental trees included to ensure that they don't constitute more than 25% of the planting requirements. Finally, an additional five (5) trees need .to be incorporated into the plan to satisfy the overall planting requirements of City Code. Przrking Lot Lanch'cal2ing There are fifty-three (53) parking stalls indicated on the site plan. This results in the need for a minimum o~.' five (5) additional overstory trees that should be planted within or 'adjacent to 'the parking areas. These plantings should occur in or adjacent to the two lots on the east and west ends of the site. The planting area for each of these trees shall be a minimum of 162 square feet. The current landscaping plan satisfies this requirement. However, Staff' would recommend substituting a · deciduous overstory tree for the one (1) Colorado blue spruce that is shown in one of the islands. Colorado blue spruce trees tend to be very shallow-rooted trees that may be more susceptible to windfall and they have very low branching which may cause visual obstrumi,,ons or vehicle damage in the parking Lot. ~,,~ General Lcmdscaping Summary A revised landscaping plan should be submitted that includes the additional five (5) trees required under City Code. [n addition, it should also include at least eight (8) trees, to be located in the parkway area, along 145th Ave. The species of tree planted in this area should be a decSduous overstory tree (aw)ids conhlJcts with low branching evergreens) that has at least some tolerance to deicing salt (possibly White Ash, Honey Locust, or a variety of American El-m that i.s also resistant to Dutch Elm Disease). In'igation should also be provided for these trees as well. The locations of these trees should 31