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25 Revised 10/03/2019 Ordinance Language Commentary 6.44 Significant Historic Sites. No structure may be placed on a significant historic site in a manner that affects the values of the site unless adequate information about the site has been removed and documented in a public repository. 6.5 Water Supply and Sewage Treatment. 6.51 Water supply. Any public or private supply of water for domestic purposes must meet or exceed standards for water quality of the Minnesota Department of Health and the Minnesota Pollution Control Agency. 6.52 Sewage treatment. Any premises used for human occupancy must be connected to a publicly-owned sewer system, where available or comply with Minnesota Rules, Chapters 7080 – 7081. 7.0 PERFORMANCE STANDARDS FOR PUBLIC AND PRIVATE FACILITIES 7.1 Placement and Design of Roads, Driveways, and Parking Areas. Public and private roads and parking areas must be designed to take advantage of natural vegetation and topography to achieve maximum screening as viewed from public waters and comply with the following standards: 7.11 Roads, driveways, and parking areas must meet structure setbacks and must not be placed within bluff and shore impact zones, when other reasonable and feasible placement alternatives exist. If no alternatives exist, they may be placed within these areas, and must be designed to minimize adverse impacts; 7.12 Watercraft access ramps, approach roads, and access-related parking areas may be placed within shore impact zones provided the vegetative screening and erosion control conditions of this subpart are met; 7.13 Private facilities must comply with the grading and filling provisions of Section 8.3 of this ordinance; and 7.14 For public roads, driveways and parking areas, documentation must be provided by a qualified individual that they are designed and constructed to minimize and control erosion to public waters consistent with the field office technical guides of the local soil and water conservation district, or other applicable technical materials. 7.2 Stairways, Lifts, and Landings. Stairways and lifts are the preferred alternative to major topographic alterations for achieving access up and down bluffs and steep slopes to shore areas. Stairways, lifts, and landings must meet the following design requirements: 7.21 Stairways and lifts must not exceed four feet in width on residential lots. Wider stairways may be used for commercial properties, public recreational uses, and planned unit developments; 7.22 Landings for stairways and lifts on residential lots must not exceed 32 square feet in area. Landings larger than 32 square feet may be used for commercial properties, public-space recreational uses, and planned unit developments;