Within all riverine SFHAs where the floodway has not been determined, the following standards shall apply:
(A) The developer shall have a registered professional engineer state in writing and show through supporting plans, calculations, and data that the project meets the engineering requirements of §§ 152.036 through 152.047 for the entire floodplain as calculated under the provisions of § 152.004. As an alternative, the developer should have an engineering study performed to determine a floodway and demonstrate that the proposed development will maintain the existing conditions conveyance, will not increase flood velocities, will not increase flood profiles and will compensate for any lost floodplain storage and then submit engineering studies to IDNR-OWR for acceptance as a regulatory floodway. Upon acceptance of their floodway by the department, the developer shall then demonstrate that the project meets the requirements of §§ 152.080 through 152.087 for the regulatory floodway. The floodway shall be defined according to the definition in § 152.002.
(B) A development permit shall not be issued unless the applicant first obtains a permit from IDNR-OWR or written documentation that a permit is not required from IDNR-OWR.
(C) No permit from IDNR-OWR shall be required if the IDNR-OWR has delegated permit responsibility to the Village per 17 Ill. Adm. Code, Chapter I, IDNR Part 3708 (Floodway Construction in Northeastern Illinois) for regulatory floodway, per IDNR-OWR’s statewide permit entitled “Construction in Floodplains with No Designated Floodway in Northeastern Illinois.”
(Ord. 3187, passed 1-22-19) Penalty, see § 152.999