Site suitability. No land shall be used or structure erected where the land is held unsuitable for such use or structure by the Plan Commission by reason of flooding, concentrated runoff, inadequate drainage, adverse soil or rock formation, erosion susceptibility, or any other feature likely to be harmful to the health, safety, prosperity, aesthetics, and general welfare of this community. The Plan Commission, in applying the provisions of this chapter, shall, in writing, recite the particular facts upon which it bases its conclusion that the land is not suitable for certain uses. The applicant shall have an opportunity to present evidence contesting such unsuitability if so desired. Thereafter, the Plan Commission may affirm, modify, or withdraw its determination of unsuitability.
(a) Lots abutting public streets with inadequate street right-of-way dedication or improvements. No building permit shall be issued for a lot which abuts a public street dedicated to only a portion of its proposed width and located on that side thereof from which the required dedication has not been secured.
(b) Must meet private water and on-site sewage disposal system requirements. In any district where a public water supply or public sewage service is not available, each lot or dwelling unit shall be capable of meeting the requirements of Chs. SPS 383 and 385, Wis. Adm. Code, and Chapter 25, titled "Sanitary Code," of the Washington County Code, and any other applicable agency regarding the construction of an on-site sewage disposal system. In addition:
[1] Soil boring and percolation tests shall be made by or under the direction and control of an architect, engineer, land surveyor, or sanitarian registered in Wisconsin, or master plumber or master plumber restricted licensed in Wisconsin to install private sewage disposal systems.
[a] The person supervising the tests shall certify as to the correctness of procedure and results.
[b] Blank forms supplied by the Washington County Planning and Parks Department Administrator shall be used for reporting results and providing certification.
[2] Sufficient borings shall be made to portray adequately the character of the soil, groundwater levels, and depths to bedrock.
[a] The borings shall be distributed as uniformly as possible, and their locations shall be shown on a site plan, as required under the provisions of Article
XX of this chapter.
[b] The number of such tests initially made shall not be less than one test per three acres or one test per lot, whichever is greater.
[c] When borings show marked variation in soil, depth to water or depth to bedrock, at least one boring per acre of area shall be made.
[d] All borings shall extend to a depth of five feet, unless bedrock is at a lesser depth.
[e] Where deep absorption systems are proposed, bore holes shall extend three feet below the expected depth of the absorption system.
(c) Lots abutting more restricted district boundaries. Lots abutting more restricted district boundaries shall provide side and rear yards not less than those required in the more restrictive abutting district and shall provide for buffer yards as are required under Article
XVIII of this chapter. The street yards in the less restrictive district shall be modified for a distance of not more than 60 feet from the district boundary line so as to equal the average of the street yards required in both districts.
(d) Land or lot divisions. All land divisions shall conform to the provisions of this chapter.