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rE <br />20feet <br />Structure setbacks {40' f 11161 <br />Tap of bluff / eluffllne <br />< 18% <br />Bluff Impact Zone: the bluff end fond within 20 feet of the bluff <br />7 18% <br />Fare of bluff <br />Figure 9. Bluff and bluff impact zone diagram. <br />>25feet <br />Average slope> 18% <br />The area of the slope over <br />18% is at least 25 feet wide <br />I 20 feet <br />> 25 feet <br />The development and land use standards tied to the bluff impact zone in the proposed MRCCA rules are <br />more restrictive than those in the shoreland rules. Minn. R. 6120.3300, subp. 4 (2015), Proposed Minn. <br />R. 6106.0120, subp. 3 and 6106.0150. The proposed MRCCA rules prohibit the placement of structures, <br />land alteration, vegetation clearing, stormwater management facilities, and most construction activities <br />in the bluff impact zone. The proposed MRCCA rules do, however, allow some limited exceptions to <br />these restrictions such as for public utilities and recreational access to the river. This greater degree of <br />protection is necessitated by development pressures on bluffs throughout the river corridor, and the <br />susceptibility of these features to erosion and slope failure. <br />28 <br />