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� <br /> paving, mowinQ, vegetation reinoval, fillin�, du�npin�, yard waste disposal oc fertilizer <br /> application are prohibited, except that certain such activities may be permitted when <br /> appcoved by the city as a buffer management plan. Invasive non-native vebetation, such <br /> as European buckthorn and noxious weeds, may be removed by obtaining a ve�etation <br /> removal permit from the city. <br /> d. Before �rading or construction near a wetland overlay district or buffer area, the o�mer or <br /> contractor must place erosion control fencing on the upland side of the perimeter of the <br /> wetland ovec(ay disti•ict o►•wetland buffer area, which ever is moi•e resti•ictive, or as <br /> required by the city. This fencing must remain in place until all development activities <br /> that may affect the wetland and the wetland buffer ai•ea have been finished and adequate <br /> vegetative cover has been established at which time the fencin� must be removed. <br /> e. All structures must have a minimum basement floor elevation not less than one foot <br /> above the ]00-year flood elevation. <br /> f. All hard-surface runoff must be treated in accordance with the requirements of the city <br /> and the appropriate watershed district. Treatment may include site retention, skimmers, <br /> weirs or sedimentation ponds of appropriate scale. Structw•es and ponds serving this <br /> purpose must be properly maintained and serviced by the property owner. <br /> g. Discharge into the wetlands must occur at a rate no greater than allowed by the city <br /> engineer in accordance with the city's surface water mana�ement plan and the appropriate <br /> MCWD requirements. <br /> (2) Setbacks. <br /> a. All buildings (principal and accessory), must be setback at least 20 feet from the upslope <br /> edQe of the wetland buffer. Exceptions: Play structures (including sport court type <br /> structures), grade-level decics, patio slabs, driveways, sidewalks and parking lots. <br /> b. A setback from the buffer area is not required for overhead utility poles and lines that are <br /> less than rivo feet in diameter, underaround utility (ines and distribution equipment, light <br /> poles. traffic signals, traffic regulatory signs, mailboxes, entrance monuments meeting <br /> section 78-140�(8) and other equipment that provides an essential public service. <br /> c. A setbacl<from the buffer area is not required for fences or retaininQ walls. <br /> (3) iVonconfvrmities. <br /> a. EfJect of�wetl�tnd boun�tary expernsiof�. An existin; structure, driveway or parkiny area <br /> meeting the required setback from a cit}�-desig�lated wetland boundary or buffer acea is <br /> considered a IeQal nonconforminQ development if a later wetland delineation or <br /> implementation of a wetland buffer shows that the wetland oc its buffer is closer than the <br /> required setback. <br />