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(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 />elevation or the ordinary high water level are subject to approval of the department of natural <br />resources and other agencies with concurrent jurisdiction. <br />(Ord. No. 101 2nd series, § 1(10.56(16)(J)), 2-24-1992; Ord. No. 127 2nd series, § 8, 7-11-1994; <br />Ord. No. 163 2nd series, § 3, 12-8-1997; Ord. No. 171 2nd series, § 2, 4-4-1998; Ord. No. 28 3rd <br />series, § 17, 8-22-2005; Ord. No. 133 3rd series, §§ 2, 3, 1-26-2015) <br />Sec. 78-1288. - Hardcover limitations. <br />Hardcover on all lots within the shoreland overlay district shall comply with the requirements of <br />Article XIII: Stormwater Quality Overlay District. <br />(Ord. No. 94 3rd series, § 6, 9-24-2012) <br />Editor's note— Ord. No. 94 3rd series, § 6, adopted Sept. 24, 2012, repealed the former § 78- <br />1288, and enacted a new § 78-1288 as set out herein. The former section pertained to similar <br />subject matter and derived from Ord. No. 101 2nd series, § 1(10.56(16)(L)), 2-24-1992; Ord. No. <br />59 3rd series, § 3, 5-11-2009. <br />DIVISION 2. - GENERAL REGULATIONS FOR ALL PARCELS WITHIN THE STORMWATER QUALITY OVERLAY <br />DISTRICT <br />Sec. 78-1680. - Hardcover restriction zones. <br />Within 75 feet of the ordinary high water level (OHWL) of any lake or tributary, and within any bluff or <br />shore impact zone, no hardcover shall be placed, located or constructed, except for driveways, stairways, <br />lifts, landings and lockboxes as regulated by the shoreland overlay district. <br />(Ord. No. 94 3rd series, § 11, 9-24-2012)