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Subd. 4. Extraordinary management measures that may be permitted in <br />conjunction with and up-slope from the above buffer strip and setback requirement <br />include, but are not limited to measures that add redundant protections to normal required <br />Best Management Practices. <br /> <br /> Subd. 5. The applicant shall be responsible to submit all of the necessary <br />informatirn to document that the proposed extraordinary construction and stormwater <br />management practices (hereinafter referred to as "Extraordinary Management Practices") <br />will at [east duplicate the performance of the required buffers and setbacks, if not exceed <br />it. The applicant shall also have the burden of proving that the purpose and objectives of <br />the Chapter will be met through the use of these Extraordinary Management Practices. <br /> <br /> 9.26.07 Monument Required. A permanent wetland edge and wetland <br />buffer monument shall be installed along lot lines and where needed to indicate the <br />contour of the buffer, with a maximum spacing of two hundred (200) feet of wetland <br />edge. If no buffer is required, the monUment shall be at the edge of the wetland. <br /> <br />9.26.08 Buffer Strip Vegetation Performance Standards. <br /> <br /> Subd. 1. Where acceptable natural vegetation exists in buffer strip areas, the <br />retention of such vegetation in an undisturbed state is preferred. A buffer strip has <br />acceptable natural vegetation if it: <br /> <br /> (a) has a continuous, dense layer of perennial grasses that have been uncultivated <br />or unbroken for at least ten (10) consecutive years, or <br /> <br /> (b) has an overstory of trees and/or shrubs with at [east eighty (80) percent canopy <br />closure that have been uncultivated or unbroken for at least ten (10) consecutive years, or <br /> <br /> (c) contains a mixture of the plant communities described in (a) and (b) above, <br />~that have been uncultivated or unbroken for at least ten (10) consecutive years, or <br /> <br />(d) contains listed Minnesota Invasive Non-Native Terrestrial Plants. <br /> <br /> Subd. 2. Notwithstanding the above performance standards, the City may <br />determine existing buffer vegetation to be unacceptable if it is composed of undesirable <br />plant species (including, but not limited to reed canary grass, common buckthorn, purple <br />loosestrife, leafy spurge and noxious weeds).. <br /> <br /> Subd. 3. Where buffer areas, or a portion thereof, are not vegetated or have been <br />cultivated or otherwise disturbed within ten (10) years of the permit application, such <br /> <br />Ramsey Wet/and Protection Ordinance - Apd! 2005 Draft (showing suggested PC revis/ons) <br />Page 9 of 8 <br /> <br />78 <br /> <br /> <br />