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e. All structures must have a minimum basement floor elevation not <br /> less than one foot above the 100-year flood elevation. <br /> f. All hard-surface runoff must be treated in accordance with the <br /> requirements of the City and the appropriate watershed <br /> district. Treatment may include site retention, skimmers, weirs or <br /> sedimentation ponds of appropriate scale. Structures and ponds <br /> servin� this purpose must be properly maintained and serviced by <br /> the property owner. <br /> g. Discharge into the wetlands must occur at a rate no greater than <br /> allowed by the City Engineer in accordance with the City's Surface <br /> Water Management Plan and the appropriate MCWD requirements. <br /> (2) Setbacks. <br /> a. All buildings (principal and accessory), must be set back at least 20 <br /> feet from the upslope edge of the wetland buffer. Exceptions: play <br /> structures (including sport court type structures), grade-level decks, <br /> patio slabs, driveways, sidewalks and parking lots. <br /> b. A setbacic from the buffer area is not required for overhead utility <br /> poles and lines that are less than two feet in diameter, underground <br /> utility lines and distribution equipment, light poles, traffic signals, <br /> traffic regulatory signs, mailboYes, entrance monuments meeting <br /> Section 78-1405(8) and other equipment that provides an essential <br /> public service. <br /> c. A setback from the buffer area is not required for fences or <br /> retainin� walls. <br /> (3) Nonconfornzities. <br /> a. Effect of Wetland Boundary Expansion. An existing structure, <br /> driveway or parl:ing area meeting the required setback from a City- <br /> designated wetland boundary or buffer area is considered a legal <br /> nonconforming development if a later wetland delineation or <br /> implementation of a wetland buffer shows that the wetland or its <br /> buffer is closer than the required setbacic. <br /> b. E�istin� Nonconformities. An existing structure, driveway or <br /> parking area that does not meet the required setbacl: fi•om a City- <br /> desi�nated wetland boundary or buffer area, is considered a leyal <br /> nonconformina development. <br /> PaQe 12 of 2? <br />