(A) All grading in streets and alleys shall be done in accordance with Standard Specifications for Road and Bridge Construction adopted by the Illinois Department of Transportation and all revisions thereto.
(B) Other site grading shall comply with the following regulations; provided that the City Council may grant a variance from any or all of the regulations in accordance with
§ 156.82.
(1) Subgrade. Before grading is started, the entire area shall be cleared of all tree stumps, roots, brush, and other objectionable materials and of all trees not intended for preservation. Subsequently, the subgrade shall be properly shaped, rolled, and uniformly compacted.
(2) Cuts. In cuts, all tree stumps, boulders, and other objectionable materials shall be removed to a depth of at least two feet below the graded surface.
(3) Tree preservation. Existing vegetation, especially trees having a diameter of four inches or more when measured 12 inches above the ground, should be retained and protected to the maximum extent consistent with development of the site.
(4) Erosion control. The design of every subdivision shall be consistent with the natural limitations presented by topography and soil so as to create the least potential for soil erosion. Soil shall be exposed for the shortest feasible period of time. Temporary vegetation or, where appropriate, mulching or other covering shall be used to protect exposed areas.
(5) Sedimentation control. Appropriate devices, such as sediment basins, debris basins, desilting basins, or silt traps, shall be installed and maintained to remove sediment from surface waters leaving the subdivision.
(Ord. 1402, passed 2-24-1998)