A. Determining Floodplain Designation:
1. Check all new development sites to determine whether they are in a special flood hazard area (SFHA).
2. If they are in an SFHA, determine whether they are in a floodway or flood fringe or in a floodplain for which a detailed study has not been conducted and which drains more than one square mile.
3. Check whether the development is potentially within an extended SFHA (with a drainage area less than 1 square mile), indicating that the development would have adverse impacts regarding storage, conveyance, or inundation which would be the basis for the applicant being required to delineate the floodplain and floodway and be subject to the remaining provisions of this title.
B. Professional Engineer Review:
1. If the development site is within a floodway or in a floodplain for which a detailed study has not been conducted and which drains more than one square mile, the permit shall be referred to a licensed professional engineer under the employ or contract of the village for review to ensure that the development meets chapter 3 or 4 of this title.
2. In the case of an appropriate use, the PE shall state in writing that the development meets the requirements of chapter 3 of this title.
C. Dam Safety Requirements:
1. Dams are classified as to their size and their hazard/damage potential in the event of failure.
2. The construction or major modification of all class I (high hazard) and class II (moderate hazard) dams require an IDNR/OWR dam safety permit.
3. Some class III (low hazard) dams require an IDNR/OWR dam safety permit, depending on the drainage area to the dam, the height of the dam and the impounding capacity behind the dam. Most off channel detention basins that have an embankment are nonjurisdictional class III dam. It is not required that IDNR/OWR "sign off" on all nonjurisdictional class III dams.
4. A consulting engineer with dam safety knowledge can estimate a hazard classification and determine if an IDNR/OWR dam safety permit is required.
5. A permit application submittal must be made to IDNR/OWR for the construction or major modification jurisdictional dams.
6. Regulated dams may include weirs, restrictive culverts or impoundment structures.
D. Other Permit Requirements: Ensure any and all required federal, state and local permits are received prior to the issuance of a floodplain development permit.
E. Plan Review And Permit Issuance:
1. Ensure that all development activities within the SFHAs of the jurisdiction of the village meet the requirements of this title; and
2. Issue a floodplain development permit in accordance with the provisions of this title and other regulations of the village when the development meets the conditions of this title.
F. Inspection Review:
1. Inspect all development projects before, during and after construction to assure proper elevation of the structure and to ensure compliance with the provisions of this title; and
2. Schedule, on an annual basis, an inspection of the floodplain and document the results of the inspection.
G. Damage Determinations: Make damage determinations of all damaged buildings in the SFHA after a flood to determine substantially damaged structures which must comply with subsection 12-5-4C of this title.
H. Elevation And Floodproofing Certificates: Maintain permit files including:
1. An elevation certificate certifying the elevation of the lowest floor (including basement) of a residential or nonresidential building subject to chapter 5 of this title; and/or
2. The elevation to which a nonresidential building has been floodproofed, using a floodproofing certificate, for all buildings subject to chapter 5 of this title.
I. Records For Public Inspection: Maintain for public inspection and furnish upon request base flood data, SFHA, and designated floodway maps, copies of federal or state permit documents, variance documentation, conditional letter of map revision, letter of map revision, letter of map amendment and as built elevation and floodproofing and/or elevation certificates for all buildings constructed subject to this title.
J. State Permits: Ensure that construction authorization has been granted by IDNR/OWR for all development projects subject to chapters 3 and 4 of this title, unless enforcement responsibility has been delegated to the village. However, the following review approvals are not delegated to the village and shall require review or permits from IDNR/OWR:
1. Organizations which are exempt from this title, as per Illinois Compiled Statutes;
3. An engineer's determination that an existing bridge or culvert crossing is not a source of flood damage and the analysis indicating the proposed flood profile, per subsection 12-3-3C4 of this title;
4. An engineer's analysis of the flood profile due to subsection 12-3-3C5 of this title;
5. Alternative transition sections and hydraulically equivalent compensatory storage as indicated in subsections 12-3-3C1, C2 and C8 of this title;
6. Permit issuance of structures within, under, or over publicly navigable rivers, lakes and streams;
7. Any changes in the mapped floodway or published flood profiles.
K. Cooperation With Other Agencies:
1. Cooperate with state and federal floodplain management agencies to improve base flood or 100-year frequency flood and floodway data and to improve the administration of this title;
2. Submit data to IDNR/OWR and FEMA for proposed revisions of a regulatory map within six (6) months whenever a modification of the floodplain may change the base flood elevation or result in a change to the floodplain map;
3. Submit reports as required for the national flood insurance program; and
4. Notify FEMA of any proposed amendments to this title.
L. Promulgate Rules And Regulations: Promulgate rules and regulations as necessary to administer and enforce the provisions of this title, subject however to the review and approval of IDNR/OWR and FEMA for any changes to this title. (Ord. 08-07, 6-9-2008)