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<br />drain system, and any connections to the storm drain system from indoor drains and sinks, regardless of
<br />whether said drain or connection had been previously allowed, permitted, or approved by an authorized
<br />enforcement agency, or any drain or conveyance connected from a commercial or industrial land use to
<br />the storm drain system that has not been documented in plans, maps, or equivalent records and approved
<br />by the City.
<br />Impervious surface
<br /> 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 of
<br />flow than existed prior to development. Examples include rooftops, sidewalks, patios, driveways, parking
<br />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
<br />wind and the movement of sediments into or upon waters or lands within this government's
<br />jurisdiction, including clearing and grubbing, grading, excavating, transporting and filling of land.
<br />Within the context of 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,
<br />which 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
<br />control plans, except for the emergency. If such a plan would have been required, then the
<br />disturbed land area shall be shaped and stabilized in accordance with the city's
<br />requirements as soon as possible.
<br />Industrial activity means any activity subject to NPDES Industrial Storm Water Permits as defined in 40
<br />CFR, Section 122.26 (b)(14).
<br />Municipal Separate Storm Sewer System (MS4) means the system of conveyances (including sidewalks, roads
<br />with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, or
<br />storm drains) owned and operated by the city and designed or used for collecting or conveying storm
<br />water, and that is not used for collecting or conveying sewage.
<br />Native vegetation
<br />presettlement
<br /> means the pre-settlement group of plant species native to the local
<br />,
<br />region that were not introduced as a result of European settlement or subsequent human introduction.
<br />Non-stormwater discharge means any discharge to the storm drain system that is not composed entirely of
<br />stormwater.
<br />Ordinary high water mark
<br /> 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:
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