A. Detention In Wetlands:
1. Existing "wetlands", as defined in section 12-1-3 of this title, shall not be modified for the purposes of stormwater detention. The village board may waive this restriction if it can be demonstrated that the wetland is highly degraded and would benefit from detention related improvements.
2. Existing depressional storage in wetlands shall be maintained or compensated on a one to one (1:1) basis. The volume of detention storage required to meet the requirements of this section shall be in addition to any existing depressional storage.
3. Prior to discharge, all stormwater runoff shall be routed through a detention/sedimentation basin designed to capture the two (2) year, twenty four (24) hour event and hold it for an average of twenty four (24) hours before release.
4. The provisions of article B of this chapter shall apply to all work in or adjacent to existing "wetlands" as defined in section 12-1-3 of this title.
B. Construction In Wetlands 1 :
1. If jurisdictional wetlands are part of a stormwater management system that proposes topographic change activities involving excavation and/or deposition within the wetlands, a permit will be required from the U.S. army corps of engineers (COE).
2. As a condition of village approval of any stormwater management system, including all detention areas, swales, sewers, berms, etc., which involve jurisdictional wetlands and prior to submission of the final plat of the subdivision to the planning and zoning commission, a permit shall be obtained from the COE, or if a permit is not required, a sign off letter from the COE must be provided.
C. Construction In Floodplain: If construction activities are necessary in the regulatory floodplain, all requirements of the county stormwater ordinance shall be met 1 .
D. Endangered Species:
1. In conformance with the endangered species protection act, effective December 3, 1990, the village is required to consult with the Illinois department of natural resources, office of conservation (IDNR/OC), prior to preliminary platting of certain land developments.
2. As a condition of village approval of such plats, a determination must be obtained from IDNR/OC, either stating that no further consultation is required or stating recommendations for minimizing or avoiding impacts on endangered species.
3. Although the application for an IDNR/OC determination will be filed by the village, the subdivider will be required to prepare the application and to provide any subsequent documentation which may be requested to conform with the intent of the act. (Ord. 2004-06, 4-19-2004)
Notes
| 1 | 1. See also title 10, chapter 8 of this code. |
| 1 | 1. See title 10, chapter 9 of this code. |