Macon County, IL Environmental Rules: Erosion Control (2026)

35. Required content includes a topographic map with five-foot or smaller contour intervals, existing drainage ways and floodplains, tree preservation details, the limits of clearing, grading and filling, proposed drainage networks and drain tile sizing, and a construction-sequence schedule tied to the grading and sedimentation work. The plan must specify rock pads, wash-down pads and settling basins at road access points, and crews must keep soil, sediment and debris off streets and public ways at a level acceptable to the Planning and Zoning Department; any sediment tracked onto a public way has to be removed by machine, broom or shovel by the end of the work day, or it stands as a separate violation of the chapter.

Once work starts, qualified personnel must inspect disturbed areas that have not been finally stabilized, along with structural control measures and vehicle entry and exit points, at least once every seven calendar days and again within 24 hours after any storm of one-half inch or more, or equivalent snowfall. These requirements sit inside the same Chapter 152 Stormwater Management Ordinance that governs land disturbance permits, so a subdivision or commercial site plan has to satisfy both the permit threshold and this plan content together.