Agenda - Council Work Session - 06/17/2003

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Preliminary Plat Review: Alpine Acres 2'~d Addition May 30, 2003 Page 3 of 4 landscape rock, mulch, wetlands, and ponding areas. At least 10% of the open space must be shown as an easily identifiable common area for the use of the surrounding residents. The dt'velopment is proposing 1 acre of open space, which equates to 74% open space. This plat is the second phase to Alpine Acres, which contains several nodes of identifiable con'm-ton open space areas. ... Stormwater Mana[ement Fee: The City has enacted a stormwater management ~:ee of $375.00 pet' unit. A payment in the amount of $2,250 will be required .prior to the City releasing the plat for recording. Tree 'Prescrvntion Plan: A tree preservation plan was not submitted to the City. HoWever, there does appear to be some ex'isting trees shown on the landscaping plan. It is'unclem: whether any of these existing trees are going to be preserved'. This needs to be clariSed and the preliminary plat revised accordingly. Density, Transitionint: City Ordinm~ces require a trmasition between higher density developments and lower density developments. The subject development is required to provide density transifioning along the western and northwestern edge of the developme~xt as it is located adjacent to existing single-family homes. The prelim/nary plat is proposing to satisfy density transitioning through the landscape buffer option. The buffer area'is required to be a tWenty-five (25') foot wide area located along the common boundary. The northern boundary o:[ the dexre, lopment abutting existing single-family homes is roughly 180 feet. This results in the need for four (4) conifers, four (4) deciduous overstory trees, and tKree (3) ornamentals. The landscaping plan dated April 30, 2003 does not specify which plantings are being used to fulfill the density transitioning requirements.. However, within the twenty-five foot buffer area, there are four (4) deciduous overstory trees, thre~ (3).ornamentals, and one conifer, Therefore, to fulfill tine density trm~sitioning requirement for the northern boundary, an additional three (3) conifers neecl to be installed. The western bounclary of the development abutting an existing single family house is roughly 200 feet. To fu]511 the density transitioning requirements for this common boundary, there needs to be four (4) conifers, four (4) deciduous overstory trees, and four (4) ornamen.tals. Again, the current plan does not specify which trees are being used to fulfill these req~.tirements. However, within the twenty-five ~bot buffer area, the plan does show five (5) conifers, four (4) deciduous overstory trees hnd n.o ornamentals. Thus, a minimum of four (4) ornamen.tal trees need to be installed to satisfy density transitioning requirements. The City needs to t'eceive and approv, e a revised plan speci'ficaJly showing ithe density transitioning plantings that, at a minimum, includes species and size of trees to be planted. As noted above in the [and. scaping section, a greater mix of species should be utilized to help protect against pest/pathogen infestations that can devastate monoculture plantings.