15.07.040 Lot standards.
(1) General. The available minimum continuous suitable soil area for any unsewered lot shall be of sufficient size to permit the installation and use of a POWTS having a dispersal component. It is recommended that enough area is documented and reserved on each lot to have area remaining for a replacement system or an area reserved to provide an alternate means of wastewater disposal using a pre-treatment method.
(2) Lot Size. Each lot shall meet minimum lot standards as stated in Chapter 12 of the Kenosha County Municipal Code for that particular zoning district where applicable. The lot size shall be of proper dimensions to accommodate a POWTS based on soil suitability meeting design standards in accordance with Chapter Comm. 83 of the Wisconsin Administrative Code, all provisions of this ordinance and supporting County Code and any other municipal codes. In no case shall a lot be created that will be served by a POWTS that is less than one-hundred fifty (150) feet in width and forty-thousand (40,000) square feet in area and shall exclude lands located in a C-1, Lowland Resource Conservancy District and/or a FPO. Floodplain Overlay District. Local villages and cities may have minimum lot size requirements by ordinance that will supercede these standards.
(3) Additional Requirements for Unsewered Lots. Any parcel being subdivided after the implementation date of this ordinance shall include, where applicable, the following information on a survey or a plat of survey:
(a) Soil Dispersal Area. Location of soil and site evaluation borings and the parameters of the primary and replacement (if designated) soil dispersal areas. All areas shall be laid on - contour where land slope is a factor in proper system siting.
(b) Proposed Building Areas. Locating the proposed building areas that are in accordance with minimum setbacks pursuant to the local municipality or County zoning ordinances.
(c) Wells and Water Supply Lines. Proposed location for the water well in accordance with NR 812, Wisconsin Administrative Code and/or water service lines from a community water supply.
(d) Minimum Dispersal Areas. All lots shall have a wastewater dispersal area and shall have a minimum continuous suitable soil area large enough to accommodate a minimum calculated daily wastewater flow of 600 gallons per day in accordance with Comm. 83, Wisconsin Administrative Code and without the assumption of using pre-treatment or any design technology to reduce sizing. Reduced areas may be considered by the Department of Planning and Development, Division of County Development on a case by case basis.
(e) Soil Suitability Standards. All lots and parcels shall have soils meeting a minimum A horizon plus four (4) inches of unmottled B or E or C horizon (A+4) criteria within the designated continuous suitable soil area.
(f) POWTS Setbacks. All designated POWTS areas on a parcel must meet all setback requirements found in Comm. 83, Trans 233 and NR812 Wisconsin Administrative Code. They shall also meet any setback requirements stated in any applicable chapters of the Kenosha County Municipal Code and any other applicable federal, state or local regulations.
(g) Easements. All easements or combination of adjacent easements shall not be included in the minimum continuous suitable soil area. Easements that bisect a parcel and divide or separate a parcel between the dispersal area and the building area must have a clear exception to the easement allowing installation of a POWTS, conveyance piping and electrical service. Without this exception an easement of this type will be prohibited. All easements are subject to review and approval by the County.
(h) Underground Utilities. No underground utilities of any kind shall be installed through or occupy any designated area of the minimum continuous suitable soil area. Areas where the utility service can be brought to a structure shall be pre-planned if necessary and so designated on the plat or certified survey.
(i) Vehicular Traffic. On parcels having dispersal areas designated for at-surface systems such as mounds and at-grade systems, especially where the designated area is in the streetyard of the property. A warning of no vehicular traffic on or within fifteen (15) feet of the designated area shall be placed on the survey or plat.
(j) Changes and Amendments. Any changes or amendments made to a designated minimum continuous suitable soil area must be approved by the Sanitarian.
(k) Non-Residential Lots. Minimum lot sizes will be based on the proposed use and the requirements stated in the County or local municipal zoning ordinances. All wastewater treatment proposals will be evaluated on a case by case basis with the Sanitarian during County review and prior to any approval by the Land Use Committee. The use of holding tanks may be permitted dependent on the use and the exceptions as stated in this ordinance. [Code § 15.07-4, 2018.]