(A) A development permit shall be obtained prior to start of all proposed construction and other development including the placement of manufactured homes within any special flood hazard area in accordance with 44 CFR Part 60.3(b)(1).
(B) Application for a development permit shall be made to the Floodplain Administrator or designee on forms furnished by the Floodplain Administrator or designee prior to starting development activities. Specifically, the following information is required:
(1) Plans in duplicate drawn to scale with elevations of the project area and the nature, location, dimensions of existing and proposed structures, earthen fill placement, storage of materials or equipment, and drainage facilities (Oregon Residential Specialty Code § R106.5 requires one set to be retained and the second to be returned to the applicant);
(2) Delineation of special flood hazard areas, regulatory floodway boundaries, including base flood elevations, or flood depth in AO Zones, where available as provided in Oregon Residential Specialty Code § R106.1.3;
(3) For all proposed structures, elevation in relation to the highest adjacent grade and the base flood elevation, or flood depth in AO Zones, of the:
(a) Lowest enclosed area including crawlspace or basement floor as required by Oregon Residential Specialty Code § R106.1.3;
(b) Top of the proposed garage slab, if any; and
(c) Next highest floor.
(4) Locations and sizes of all flood openings, if required, in any proposed structure;
(5) The proposed elevation to which a non-residential structure will be flood-proofed or elevated;
(6) Specifications for any proposed flood-proofing of non-residential structures and an indication that the proposed flood-proofing will be certified by a professional engineer or architect prior to issuance of the development permit;
(7) Description of the extent to which any watercourse will be altered or relocated as a result of a proposed development (see division (C) of this section); and
(8) Evidence that all necessary permits can be obtained from those governmental agencies from which approval is required by federal or state law.
(C) No development permit shall be issued until compliance with this chapter and other applicable codes and regulations has been demonstrated. Specifically, the following documentation is required prior to issuance of a floodplain development permit:
(1) Evidence that all necessary permits have been obtained from those governmental agencies from which approval is required by federal or state law;
(2) A FEMA-approved CLOMR if the project will cause a watercourse alteration, modify base flood elevation, or change the boundaries of the floodway or special flood hazard area;
(3) A completed pre-construction elevation certificate signed and sealed by a registered professional surveyor; and
(4) Certification from a registered professional engineer or architect that any proposed non-residential flood-proofed structure will meet the flood-proofing criteria of the NFIP and state specialty codes.
(D) During construction.
(1) For all new construction and substantial improvements, the permit holder shall provide to the Floodplain Administrator an as-built certification of the floor elevation or flood-proofing level immediately after the lowest floor or flood-proofing is placed and prior to further vertical construction.
(2) Any deficiencies identified by the Floodplain Administrator shall be corrected by the permit holder immediately and prior to work proceeding. Failure to submit certification or failure to make the corrections shall be cause for the Floodplain Administrator to issue a stop-work order for the project.
(E) Finished construction.
(1) In addition to the requirements of the state specialty codes pertaining to certificate of occupancy, and prior to the final inspection, the owner or authorized agent shall submit the following documentation for finished construction that has been signed and sealed by a registered surveyor or engineer:
(a) For elevated buildings and structures in non-coastal special flood hazard areas (all A Zones), the elevation of the lowest floor, including basement, or where no base flood elevation is available, the height above highest adjacent grade of the lowest floor;
(b) For non-residential buildings and structures that have been flood-proofed, the elevation to which the building or structure was flood-proofed.
(2) Failure to submit certification or failure to correct violations shall be cause for the Floodplain Administrator to withhold a certificate of occupancy until such deficiencies are corrected.
(F) Expiration of development permit. Development permits issued under this chapter shall become invalid unless the work authorized by such permit is commenced within 180 days after issuance or the work is suspended or abandoned for a period of 180 days after the work commences. Extensions for periods of not more than 180 days each shall be requested in writing and shall be reviewed against the current FIRM and this chapter.
(Ord. 527, passed 1-14-2013)