This chapter is adopted for the purposes of:
(A) Designating suitable land use districts along the bluffland and shoreland of the Lower St. Croix River;
(B) Regulating the area of a lot, and the length of bluffland and water frontage suitable for building sites;
(C) Regulating the Setback of Structures and sanitary waste treatment facilities from Blufflines to protect the existing and/or natural scenic values, vegetation, soils, water and bedrock from disruption by human-made Structures or facilities;
(D) Regulating the Setback of Structures and sanitary waste treatment facilities from shorelines to protect the natural scenic value, floodplain and water quality;
(E) Regulating alterations of the natural vegetation and topography; and
(F) Conserving and protecting the natural scenic values and resources of the river valley and maintaining a high standard of environmental quality to comply with State Department of Natural Resources Standards and Criteria for the Lower St. Croix National Scenic Riverway (NR 2200-2202).