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<br />(1) Generally. <br />a) Architectural standards. <br />1. It is the purpose and intent of the city, by the adoption of the performance standards of this subsection <br />(f), to ensure commercial buildings constructed within the city are of a high quality of exterior <br />appearance, consistent with section 3.B. of the City of Lake Elmo Design Guidelines and Standards <br />Manual. the terms of Nonresidential Development Policy #5 of the 2000--2010 Lake Elmo <br />Comprehensive Plan. It is the finding of the city that a limited selection of primary exterior surfacing <br />materials meets this standard of quality. <br />2. It is the further finding of the city that several specific exterior surfacing materials are appropriate, and <br />of sufficient quality, to be utilized only as primary or accent materials in varying percentages. The <br />variations of percentage of specific accent materials relates to a finding by the city as to the relative <br />quality and rural character of those respective accent materials. <br />b) Architectural and site plan submittals. New building proposals shall include architectural and site plans <br />prepared by registered architect and shall show the following as a minimum: <br />1. Elevations of all sides of the buildings; <br />2. Type and color of exterior building materials; <br />3. Typical general floor plans; <br />4. Dimensions of all structures; and <br />5. Location of trash containers, heating, cooling and ventilation equipment and systems. <br />c) Applicability structure additions and renovation. <br />1. Additions to existing structures resulting in an increase of gross floor area of the structure of less than <br />100 percent; and/or installation of replacement exterior surfacing any portion of an existing structure <br />shall be exempt from the standards of this subsection where it is found that the new or replacement <br />exterior surfacing proposed is identical to that of the existing structure. <br />2. Where additions to an existing structure result in an increase in the gross floor area of the existing <br />structure of 100 percent or greater, the entire structure (existing structure and structure addition) shall <br />be subject to the standard of this subsection. <br />d) Performance standard--Primary exterior surfacing. <br />1. The primary exterior surfacing of structures shall be limited to natural brick, stone, or glass. Artificial <br />or thin veneer brick or stone less than nominal four inches thick shall not qualify as complying with <br />this performance standard. <br />2. Primary exterior surface shall be defined as not less than 70 percent of the sum of the area of all <br />exterior walls of a structure nominally perpendicular to the ground. All parapet or mansard surfaces <br />extending above the ceiling height of the structure shall be considered exterior surface for the purposes <br />of this section. Windows and glass doors shall be considered a primary surface, but the sum area of <br />this glass shall be deducted from the wall area for the purposes of the 70 percent primary/30 percent <br />accent formulas of this section. Doors of any type of material, except glass, shall not be considered a <br />primary exterior surface. <br />3. Each wall of the structure shall be calculated separately and, individually comply with the 70/30 <br />formula. <br />e) Performance standard--Exterior surfacing accents. Not more than 30 percent of the exterior wall <br />surfacing, as defined by subsection (f)(1)d of this section may be of the following listed accent materials, <br />but no single accent material, except natural wood, may comprise more than 20 percent of the total of all <br />accent materials; and no combustible materials shall be used: <br />1. Cedar, redwood, wood siding; <br />2. Cement fiber board; <br />3. Standing seam metal; <br />4. Architectural metal;