A development permit shall be obtained before construction or development begins within any area of special flood hazard established by Section 16.52.060. Applications for a development permit shall be made with the chief building official on forms consistent with those provided by the floodplain administrator and upon such application as may be specified by the chief building official. In the case of any construction or development for which a permit such as a building, electrical, plumbing or grading permit is otherwise required by this title, that permit shall constitute the development permit for the project and no separate application shall be required. In such event, the provisions of this chapter shall be complied with and the course of issuance of such permit and such permit shall be conditioned upon such provisions as may be required by this chapter. In addition to any other requirements, the chief building official may require the submission of such materials as are necessary to insure compliance with the provisions of this chapter, which may include, but shall 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, fill, storage of materials, drainage facilities; and the location of the foregoing. In all cases, the following information shall be required:
(a) A site plan, including but not limited to:
(1) For all proposed structures, spot ground elevations at building corners and twenty-foot or smaller intervals along the foundation footprint, or one-foot contour elevations throughout the building site;
(2) The proposed locations of water supply, sanitary sewers, and utilities; and
(3) The base flood elevation from the Flood Insurance Study or the Flood Insurance Rate Map, or both, to the extent available;
(b) The foundation design details, including but not limited to:
(1) The proposed elevation in relation to mean sea level, of the lowest floor, including basement, of all structures;
(2) For a crawl-space foundation, the location and total net area of foundation openings as required in this ordinance and applicable Federal Emergency Management Agency technical bulletins, including but not limited to, TB 1 and TB 7; and
(3) For foundations placed on fill, the location and height of the fill, and compaction requirements (compacted to ninety-five percent using the Standard Proctor Test method);
(c) Proposed elevation in relation to mean sea level to which any nonresidential structure will be floodproofed, as required in subdivision (3) of subsection (c) of Section 16.52.130 and applicable Federal Emergency Management Agency Technical Bulletins, including but not limited to TB 3;
(e) A description of the extent to which any watercourse will be altered or relocated as a result of the proposed development.
(Ord. 5566 § 5, 2022: Ord. 4557 § 5, 1999: Ord. 3795 § 5, 1988: Ord. 3158 § 1 (part), 1979)