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(A) Lands subject to flooding, high water table, excessive erosion and subsidence because of soil types or groups, water courses and other drainageways, steep slopes or other natural hazards may not be platted for residential or other uses in a way as to present a danger to life or property, or to the public health, safety or general welfare.
(B) The recommendations of the Will County Soil Manual must be followed with respect to the land plan and construction details of proposed subdivisions.
(C) Soil borings must be made to confirm the soils map information included in the United States Department of Agriculture (USDA), Natural Resources Conservation Service (NRCS) Soil Survey of the county. Representative soil borings must be taken to a depth at least five feet below the lowest proposed foundation, two feet below the lowest proposed sewer or the point of refusal. At least one boring must be made per ten acres or more if necessary to confirm the soil survey.
(D) Two copies of a soils report prepared by a qualified soil professional must be submitted with the preliminary plat. The report must include, at a minimum, soil classifications, water level observations, blows per foot and an assessment of the suitability of existing soils for the proposed development. For developments in which rain gardens, bio-infiltration, bio-swales or other groundwater infiltration best management practices (BMPs) are proposed, permeability data is also required.
(E) Developments in which structures will be constructed within, or adjacent to floodplains, or areas prone to flooding, must comply with the requirements of Federal Emergency Management Agency (FEMA) Technical Bulletin 10-01, Ensuring That Structures Built on Fill In or Near Special Flood Hazard Areas Are Reasonably Safe From Flooding.
(F) The developer shall be required to provide and install emergency warning sirens in subdivisions when deemed necessary following the guidelines as set forth by the County Emergency Management Agency.
(Ord. passed 7-8-1970; Res. 09-167, passed 6-18-2009) Penalty, see § 154.999