Agenda - Parks and Recreation Commission - 05/12/2005

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Subd. 4. Extraordinary management mcasm'es that may be permitted in conjunction with and up-slope from the above buffer strip and setback requirement include, but are not limited to measures that add redundant protections to normal required Best Management Practices. Subd. 5. The applicant shall be responsible to submit all of the necessary infonmation to document that the proposed extraordinary construction and stormwater management practices (hereinafter referred to as "Extraordinary Management Practices") will at least duplicate the performance of the required buffers and setbacks, if not exceed it. The applicant shall also have the burden of proving that the purpose and objectives of the Section will be met through the use of these Bxtraordinary Management Practices. 9.26.07 Monument Required. A permanent wetland edge and wetland buffer monument shall be/nstalled along lot lines and where needed to indicate the contour of the buffer, with a maximum spacing of two hundred (200) feet of wetland edge. If no buffer is required, the monument shall be at the edge of the wetland. 9.26.08 Buffer Strip Vegetation Performance Standards. Subd. t. Where acceptable natural vegetation exists in buffer strip areas, the retention of such vegetation in an undisturbed state is preferred. A,buffer strip has acceptable natural vegetation if it: (a) has a continuous, dense layer of perennial grasses that have been uncultivated or unbroken for at least ten (10) consecutive years, or (b) has an overstory of trees and/or shrubs with at least eighty (80) percent canopy closure that have been uncultivated or uhbroken for at least ten. (10) consecutive years, or (c) contains a mixture of the plant commurfities described in (a) and (b) above, that have been uncultivated or unbroken for at least ten (10) consecutive years. Subd. 2. Notwithstanding the-above performance standards, the City may determine existing buffer vegetation to be unacceptable if it is composed of undesh'able plant species including, but not limited to reed canary grass, common buckthorn, purple loosestrife, leafy spurge, noxious weeds or any other plants included in the DNR's Minnesota Invasive Non-Native Terrestrial Plants list. Subd..3. Where buffer areas, or a portion thereof, are not vegetated or have been cultivated or otherwise disturbed within ten (10) years of the permit application, such areas shall be re-planted and maintained according the City's standard seeding specifications available from the city Engineer's office. 9.26.09 Encroachment in Buffer Areas. Water quality ponds may encroach into required wetland buffer areas, provided it doesn't reduce the buffers ability Ramsey Wetland Protection ordinance - May 5, 2005 Draft Page 8