Agenda - Council - 11/14/2023 - Laserfiche WebLink

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1 (3) Existing trees. A reasonable attempt shall be made to preserve as many existing trees as is 2 practicable and incorporate them into a development (see division 5, Tree Preservation for 3 inventory and preservation requirements). For each healthy significant tree retained on site and 4 not identified on the city's list of prohibited trees, one overstory tree, or the equivalent canopy 5 square footage, can be deducted from the minimum planting requirements. 6 (4) Planting types. Acceptable planting types shall be determined by the Ramsey Tree Book or, if 7 not in the Ramsey Tree Book,have approval of the city. The complement of trees fulfilling the 8 landscaping requirements shall not be less than 25 percent deciduous and not less than 25 9 percent coniferous. Not more than 25 percent of the required plantings shall consist of 10 ornamental or understory trees. Projects should attempt to limit the planting of any one genus 11 to no more than 20 percent of the total plantings. 12 (5) Tree stock. Required plantings shall be free of insects, diseases, and mechanical injuries and 13 shall have a straight trunk and form that is characteristic of the species. 14 (6) Minimum planting sizes. The minimum planting sizes for all zoning districts shall be: 15 a. Deciduous overstory tree: 2 inch caliper; 16 b. Deciduous understory/ornamental tree: 1.5 inch caliper; 17 C. Coniferous tree and multi-stem deciduous tree: 6 feet in height; and 18 d. Shrubs: twenty-four (24) inches in height or width, dependent upon growth 19 characteristics. 20 (7) Planting requirements for business districts. 21 a. Business districts (B-1, B-2, and B-3). The minimum number of trees required are 22 outlined in the table below. These are minimum requirements and can be supplemented 23 with other plantings, as well as flowers and various ground covers that would be 24 appropriate to produce a complete and quality landscape. Planting Type Required Numbers Deciduous/coniferous trees 1 tree per 50 lineal feet of site perimeter, or 1 tree per 1,000 square feet of building footprint, whichever is greater. For building expansions, 1 additional tree is required for each 1,000 square feet of new building footprint area. Shrubs 1 shrub per 30 lineal feet of site perimeter or 1 shrub per 300 square feet of building footprint area, whichever is greater. 25 26 b. Industrial districts (I-1 and I-2). The minimum number of plantings required shall be 27 determined based on canopy cover. To fulfill the planting requirements, a combination 28 of trees and shrubs shall meet or exceed the minimum required canopy cover square 29 footage. The minimum canopy cover required shall be as follows: 30 1. Determine ratio of impervious area (including stormwater ponds below the 100- 31 year flood elevation)to entire site. 32 2. Multiply the impervious area/site area ratio by the square footage of the pervious 33 area to calculate the required canopy cover square footage for the project area. 34 3. The following formula shall be utilized to determine the average canopy cover of 35 a species: [(Minimum+Maximum Spread)=4]2 x x (0.65 for preferred species 36 or 0.50 for acceptable species, as identified in the Ramsey Tree Book). 37 4. Due to the unique nature of the COR district, flexibility with the minimum 38 planting standards may be approved if space is a limiting factor. 39 C. Road frontage plantings. For every 35 feet of public road frontage, one overstory tree 40 shall be planted adjacent to the road right-of-way on private property. These plantings 41 are credited toward the minimum planting requirements for the district. Page 75 of 141