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-CODE OF ORDINANCES
<br /> Chapter 30- LAND DEVELOPMENT REGULATIONS
<br /> ARTICLE VII. STORMWATER MANAGEMENT
<br /> (Examples of vegetative cover practices can be found in the current version of the Minnesota Department
<br /> of Transportation's publication, "Supplemental Specifications to the (year of the latest update) Standard
<br /> Specifications for Construction.")
<br /> Hydric soils means soils that are saturated, flooded, or ponded long enough during the growing
<br /> season to develop anaerobic conditions in the upper part.
<br /> Hydrophytic vegetation means Macrophytic (large enough to be observed by the naked eye) plant
<br /> life growing in water, soil or on a substrate that is at least periodically deficient in oxygen as a result of
<br /> excessive water content.
<br /> Impervious surface means a constructed hard surface that either prevents or retards the entry of
<br /> water into the soil, and causes water to run off the surface in greater quantities and at an increased rate
<br /> of flow than existed prior to development. Examples include rooftops, sidewalks, patios, driveways,
<br /> parking lots, storage areas, and concrete, asphalt, or gravel roads.
<br /> Land disturbance activity means any land change that may result in soil erosion from water or wind
<br /> and the movement of sediments into or upon waters or lands within this government's jurisdiction,
<br /> including clearing and grubbing, grading, excavating, transporting and filling of land. Within the context of
<br /> this rule, land disturbance activity does not mean:
<br /> (1) Individual home gardens, minor landscaping, repairs, and maintenance work.
<br /> (2) Construction, installation, and maintenance of fences, signs, posts, poles, and electric,
<br /> telephone, cable television, utility lines or individual service connections to these utilities, which
<br /> result in creating under 5,000 square feet of exposed soil.
<br /> (3) Tilling, planting, or harvesting of agricultural, horticultural, or silvicultural (forestry) crops.
<br /> (4) Emergency work to protect life, limb, or property and emergency repairs, unless the land
<br /> disturbing activity would have otherwise required an approved erosion and sediment control
<br /> plans, except for the emergency. If such a plan would have been required, then the disturbed
<br /> land area shall be shaped and stabilized in accordance with the city's requirements as soon as
<br /> possible.
<br /> Native vegetation means the presettlement group of plant species native to the local region, that
<br /> were not introduced as a result of European settlement or subsequent human introduction.
<br /> Ordinary high water mark means the boundary elevation where the vegetation changes from
<br /> predominately aquatic (Where "aquatic" broadly means that the vegetation can survive moist conditions)
<br /> to terrestrial. This elevation delineates the highest water level, which has been maintained for a sufficient
<br /> period of time to leave evidence upon the landscape, commonly that point where the natural vegetation
<br /> changes from predominantly aquatic to predominantly terrestrial. Water often reaches this elevation in
<br /> spring. For rivers and streams the ordinary high water mark is usually the top of the bank. It is less well
<br /> defined for lakes and wetlands. The definition in Minnesota Statute 103G.005, subdivision 14 says that
<br /> the " . . . "Ordinary high water level" means the boundary of waterbasins, watercourses, public waters,
<br /> and public waters wetlands, and:
<br /> (1) The ordinary high water level is an elevation delineating the highest water level that has been
<br /> maintained for a sufficient period of time to leave evidence upon the landscape, commonly the
<br /> point where the natural vegetation changes from predominantly aquatic to predominantly
<br /> terrestrial;
<br /> (2) For watercourses, the ordinary high water level is the elevation of the top of the bank of the
<br /> channel; and
<br /> (3) For reservoirs and flowages, the ordinary high water level is the operating elevation of the
<br /> normal summer pool.
<br /> Elk River, Minnesota, Code of Ordinances Page 3
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