(A) Development permit. Application for a development permit shall be made to the Local Floodplain Administrator on forms furnished by him or her prior to any development activities. The development permit may include, but not be limited to, plans in duplicate drawn to scale showing: the nature, location, dimensions, and elevations of the area in question; existing or proposed structures; and the location of fill materials, storage areas, and drainage facilities. Specifically, the following information is required:
(1) A plot plan that shows the 100-year floodplain contour or a statement that the entire lot is within the floodplain must be provided by the development permit applicant when the lot is within or appears to be within the floodplain as mapped by the Federal Emergency Management Agency or the floodplain identified pursuant to either the duties and responsibilities of the Local Floodplain Administrator of § 5-6-23(K) or the standards for subdivision proposals of § 5-6-31(L) and the standards for streams without estimated base flood elevations and floodways of § 5-6-32. The plot plan must be prepared by or under the direct supervision of a registered land surveyor or professional engineer and certified by it. The plot plan must show the floodway, if any, as identified by the Federal Emergency Management Agency or the floodway identified pursuant to either the duties or responsibilities of the Local Floodplain Administrator of § 5-6-23(K) or the standards for subdivision proposals of § 5-6-31(L) and the standards for streams without estimated base flood elevations and floodway of § 5-6-32.
(a) The elevation (in relation to mean sea level) of the lowest floor of all new and substantially improved structures; and
(b) If the structure will be floodproofed in accordance with the non-residential construction requirements of § 5-6-31(B), the elevation (in relation to mean sea level) to which the structure will be floodproofed.
(4) Alteration of watercourse. Where any watercourse will be altered or relocated as a result of proposed development, the application for a development permit shall include a description of the extent of watercourse alteration or relocation, an engineering study to demonstrate that the flood- carrying capacity of the altered or relocated watercourse is maintained and a map showing the location of the proposed watercourse alteration or relocation.
(B) Certifications.
(1) Floodproofing certification. When a structure is floodproofed, the applicant shall provide certification from a registered, professional engineer or architect that the non-residential, floodproofed structure meets the floodproofing criteria in the non-residential construction requirements of §§ 5-6-31(B) and 5-6-34(B)(2).
(2) Certification during construction. A lowest floor elevation or floodproofing certification is required after the lowest floor is completed. As soon as possible after completion of the lowest floor and before any further vertical construction commences, or floodproofing by whatever construction means, whichever is applicable, it shall be the duty of the permit holder to submit to the Local Floodplain Administrator a certification of the elevation of the lowest floor, or floodproofed elevation, whichever is applicable, as built, in relation to mean sea level. Said certification shall be prepared by or under the direct supervision of a registered land surveyor or professional engineer and certified by it. Any work done prior to submission of the certification shall be at the permit holder's risk. The Local Floodplain Administrator shall review the floor elevation survey data submitted. The permit holder immediately and prior to further progressive work being permitted to proceed shall correct deficiencies detected by such review. Failure to submit the survey or failure to make said corrections required hereby shall be cause to issue a stop-work order for the project.
(3) V-Zone certification. When a structure is located in Zones V, VE, or V1-V30, certification shall be provided from a registered professional engineer or architect, separate from submitted plans, that new construction and substantial improvement meets the criteria for the coastal high hazard areas outlined in § 5-6-35.
(4) As-built certification. Upon completion of the development a registered professional engineer, land surveyor or architect, in accordance with South Carolina law, shall certify according to the requirements of divisions (B)(1), (2) and (3) above that the development is built in accordance with the submitted plans and previous pre-development certifications.
(Ord. 18-06, passed 6-11-2018)