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(2) For movement of 51 through 500 cubic yards of material anywhere within the Shoreland <br /> Overlay District, except for within 75 feet of public waters, a staff-issued land alteration permit <br /> shall be required. <br /> (3) For movement of more than 500 cubic yards of material within the Shoreland Overlay District, <br /> conditional use permit approval by the city council is required in addition to the required land <br /> alteration permit. <br /> (e) The following considerations and conditions must be adhered to during the issuance of construction <br /> permits, grading and filling permits, conditional use permits, variances and subdivision approvals: <br /> (1) Grading or filling in any type 1, 2, 3, 4, 5, 6, 7 or 8 wetland must be evaluated to determine how <br /> extensively the proposed activity would affect the following functional qualities of the wetland: <br /> a. Sediment and pollutant trapping and retention; <br /> b. Storage of surface runoff to prevent or reduce flood damage; <br /> c. Fish and wildlife habitat; <br /> d. Recreational use; <br /> e. Shoreline or bank stabilization; and <br /> f. Noteworthiness, including special qualities, such as historic significance, critical habitat for <br /> endangered plants and animals, or others. <br /> This evaluation must also include a determination of whether the wetland alteration being <br /> proposed requires permits, reviews or approvals by other sections of city ordinances or by other <br /> local, state or federal agencies including but not limited to watershed districts, state department <br /> of natural resources, or the United States Army Corps of Engineers. <br /> (2) Alterations must be designed and conducted in a manner that ensures only the smallest <br /> amount of bare ground is exposed for the shortest time possible. <br /> (3) Mulches or similar materials must be used, where necessary, for temporary bare soil coverage, <br /> and a permanent vegetation cover must be established as soon as possible. <br /> (4) Methods to minimize soil erosion and to trap sediments before they reach any surface water <br /> feature must be used. <br /> (5) Altered areas must be stabilized to acceptable erosion control standards consistent with the <br /> field office technical guides of the local soil and water conservation districts and the United <br /> States Soil Conservation Service. <br /> (6) Fill or excavated material must not be placed in a manner that creates an unstable slope. <br /> (7) Plans to place fill or excavated material on steep slopes must be reviewed by the city engineer <br /> for continued slope stability and must not create finished slopes of 30 percent or greater. <br /> (8) Fill or excavated material must not be placed in bluff impact zones. <br /> (9) Any alterations below the ordinary high water level of public waters must first be authorized by <br /> the commissioner of the department of natural resources under Minn. Stat. § 103G.245. <br /> (10) Alterations of topography must only be allowed if they are accessory to permitted or <br /> conditional uses and do not adversely affect adjacent or nearby property. <br /> (11) Placement of natural rock riprap, including associated grading of the shoreline and placement <br /> of a filter blanket, is permitted if the finished slope does not exceed three feet horizontal to one <br /> foot vertical, the landward extent of the riprap is within ten feet of the ordinary high water level, <br /> and the height of the riprap above the ordinary high water level does not exceed three feet. A <br /> riprap permit shall be obtained per the requirements of section 78-969. <br /> (f) Excavations where the intended purpose is connection to a public water, such as boat slips, canals, <br /> lagoons and harbors, are prohibited above the ordinary high water level. Such excavations below the <br />