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1 <br />2 <br />3 <br />4 <br />5 <br />6 <br />7 <br />8 <br />9 <br />10 <br />11 <br />12 <br />13 <br />14 <br />15 <br />16 <br />17 <br />18 <br />19 <br />20 <br />21 <br />22 <br />23 <br />24 <br />25 <br />26 <br />27 <br />28 <br />29 <br />30 <br />31 <br />32 <br />33 <br />34 <br />35 <br />36 <br />3. Identification and application of techniques to minimize the perceived bulk of the <br />proposed structure, such as: <br />(i) Placing the long axis of the building perpendicular to the river; <br />(i i) Stepping back of portions of the facade; <br />(iii) Lowering the roof pitch or use of a flat roof; <br />(iv) Using building materials or mitigation techniques that will blend in with the <br />natural surroundings such as green roofs, green walls, or other green and <br />brown building materials; <br />(v) Narrowing the profile of upper floors of the building; <br />(vi) Increasing the setbacks of the building from the Mississippi River or <br />blufflines; <br />(vii) Identification of techniques for preservation of those view corridors <br />identified in the MRCCA plan; and <br />(viii) Opportunities for creation or enhancement of public river corridor views. <br />(3) Structure and impervious surface placement. <br />a. Structures and impervious surface must not be placed in the shore or bluff impact zones <br />unless identified as an exemption in section 920(L). <br />b. Structures and facilities must comply with the following OHWL setback provisions <br />unless identified as exempt in section 920(L): <br />1. ROS District: 200 feet from the Mississippi River. <br />2. RN District: 100 feet from the Mississippi River and :75 leel.f^^+ fhen, ther—nm thin Q„^^ °;,,^r <br />C. Structures and facilities must comply with the following bluffline setback provisions <br />unless identified as exempt in section 920(L): <br />1. ROS District: 100 feet. <br />2. RN District: 40 feet. <br />3. SR District: 40 feet. <br />d. Where principal structures exist on the adjoining lots on both sides of a proposed <br />building site, the minimum setback may be altered to conform to the average of the <br />adjoining setbacks, provided that the new structure's scale and bulk riverward or <br />bluffward of the setbacks required under section 920(F)(3) consistent with adjoining <br />development. See Figure 6. <br />Figure 6. Structure Setback Averaging <br />Structure Setback Averaging <br />Re wired Existing Proposed <br />9 principal .1 principal <br />Existing <br />principal <br />structure <br />structure i structure s. <br />structure <br />Average <br />setback _ _ _ T — — <br />^ _ _ <br />structure <br />- / .. - - L._.... ....... ......_._._..._.._... <br />setback <br />x x•Y=z <br />Y <br />Et <br />shore <br />No structures in the SIZ <br />Impact <br />�4Htiinm <br />Zane (5►Z) <br />...'`'`is <br />OHWL <br />The scale and <br />bulk of a proposed principal <br />structure <br />must be consistent with existing principal structures. <br />e. Subsurface sewage treatment systems, including the septic tank and absorption area, <br />must be located at least 75 feet from the ordinary high water level of the Mississippi <br />River and all other public waters. <br />(4) Lot size and buildable area. <br />Page 106 of 160 <br />