(a) The City may grant a variance from this regulation as provided herein. In determining whether there is unnecessary hardship or practical difficulty such as to justify the granting of a variance, the City shall consider the potential harm or reduction in riparian and/or wetland area functions that may be caused by a proposed structure or use.
(b) In making a variance determination, the City shall consider the following:
(1) Varying the front, rear and side yard setback before the riparian and wetland setbacks are varied.
(2) Variances should not be granted for asphalt or concrete paving in the riparian and wetland setbacks in any situation where gravel or porous pavement (i.e., porous pavers, and similar products) will do the job.
(c) In making a variance determination, the City may consider the following:
(1) A parcel existing at the time of passage of this section is made unbuildable.
(2) The soil type natural vegetation of the parcel, as well as the percentage of the parcel that is in the 100-year floodplain. The criteria of the City's flood damage prevention regulations may be used as guidance when granting variances in the 100-year floodplain.
(3) The extent to which the requested variance impairs the flood control, soil erosion control, sediment control, water quality protection, or other functions of the riparian and/or wetland area. This determination shall be based on sufficient technical and scientific data.
(4) The degree of hardship this regulation places on the landowner, and the availability of alternatives to the proposed activity.
(5) Soil disturbing activities permitted in a riparian and/or wetland setback through variances should be implemented in order to minimize clearing to the extent possible, and to include Best Management Practices necessary to minimize soil erosion and maximize sediment control.
(6) The presence of significant impervious cover, or smooth vegetation such as maintained lawns, in riparian setback areas compromises their benefits to the City.
(7) A reduction in storm water infiltration into the soil in wetland areas will occur.
(8) A requested above ground fence does not increase the existing area of mowed grass or lawn.
(9) Modifying parking requirements before varying the riparian setback.
(10) Modifying building shape, size or design to avoid or minimize intrusion into the riparian setback.
(11) In the case of a lot made unbuildable by this regulation, consider the minimum variance needed to make it buildable for an appropriately sized and compatibly designed structure, while following the guidance provided in this section.
(12) Whether the variance will increase the likelihood for flood or erosion damage to either the applicant's property or to other properties.
(13) Culverting of watercourses should be avoided.
(14) Whether the variance will result in the need for artificial slope or bank stabilization measures that could interfere with the function of the riparian zone. (Ord. 2006-67. Passed 3-7-06.)