No person shall start construction on any new or substantially improved structure, place any movable structure such as a manufactured home, alter or relocate any watercourse, perform any other development as defined in FNSBC 15.04.010 within special flood hazard areas, or excavate or remove material within 250 feet of the centerline of the Tanana Levee structure, without first obtaining a floodplain permit from the Department of Community Planning. (Ord. 2009-55 § 2, 2010; amended during 2004 republication; Ord. 85-124 § 3, 1985. 2004 Code § 15.04.040.)