A. Authority: The village engineer shall review all documentation submitted pursuant to this chapter and, if deemed necessary to evaluate potential adverse consequences from the proposed land disturbing activity, the village engineer shall have the authority to request additional data, clarification or correction of data previously submitted.
B. Interim Measures: To the extent the village engineer determines that the runoff, erosion, sedimentation or drainage expected to occur while the project is ongoing, and before final grading, will adversely impact adjacent properties or public rights of way, the site grading plan shall also include:
1. Additional detail regarding the intended interim on site storage, placement, fill and disposal of earth materials; and
2. A specific plan to eliminate the adverse impacts identified including, but not limited to, interim soil stabilization devices and proposed measures for erosion and sedimentation control. All such proposed measures shall be based upon the standards and requirements contained in the latest edition of the "Illinois Urban Manual", compiled by the IEPA and department of agriculture.
C. Demolition: Where demolition of existing structures on a site is intended, yet permanent improvements will not be constructed thereon within sixty (60) days from the date of demolition, delineation of measures to control runoff, erosion and sedimentation as required by this chapter must be provided.
D. Final Grading: To the extent the village engineer determines that the proposed final grade, land contour or drainage pattern will, upon project completion, adversely impact adjacent properties or the public rights of way, the site grading plan shall also include:
1. Data regarding the classification, distribution, strength, and erodability of existing soils;
2. Data regarding the nature, distribution, strength and erodability of earth materials if any are to be placed on the site;
3. Level of water table;
4. Plans for permanent soil stabilization upon project completion;
5. Design criteria for corrective measures, when necessary; and
6. Alternate proposal for final grading that will eliminate the identified adverse impacts.
E. As Graded: Upon final completion of the work, the village engineer may require an as graded plan to include the following:
1. Approved site grading plan;
2. As graded ground surface elevations and one foot (1') contours;
3. Lot drainage patterns; and
4. Locations and elevations of all surface and subsurface drainage facilities. (Ord. O2008-46, 8-12-2008)