RES-2009-027a Flood Ordinance - Laserfiche WebLink

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22 Special flood hazard area (SERA) -- The land in the floodplain subiect to a one (1) percent or greater chance of being flooded in any ig yen year as determined in Section 4.2.39 of this Ordinance as defined by the base flood elevation. The mapped special flood hazard area approximates the base flood elevation Special Flood Hazard Area Overlay District: An overlay district establishing standards for development for properties within identified floodplains. Start of Construction -- Includes substantial improvement and means the date the building Hermit was issued, provided the actual start of construction, repair reconstruction rehabilitation addition placement or other improvement was within 180 days of the permit date. The actual start means either the first placement of permanent construction of a structure (including a manufactured home) on a site such as the pouring of slabs or footings, installation of piles construction of columns or anv work beyond the stage of excavation; or the placement of a manufactured home on a foundation. Permanent construction does not include land preparation, such as clearingLgrading, and filling; nor does it include the installation of streets and/or walkways; nor does it include excavation for a basement footing~iers or foundations or the erection of temporary forms; nor does it include the installation on the property of accessory buildings, such as garages or sheds not occupied as dwelling units or not part of the main structure For a substantial improvement, the actual start of construction means the first alteration of anv wall ceiling, floor, or other structural part of the building, whether or not that alteration affects the external dimensions of the building. Substantial damage -- Damage of anv origin sustained by a structure during anv one year period whereby the cost of restoring the structure to its before-damaged condition would equal or exceed fii~ (50) percent of the market value of the structure before the damage occurred See definition of "substantial improvement." Substantial damage also means flood-related damage sustained by a structure on two separate occasions durin a ten (l0~year period for which the cost of repairs at the time of each such flood event, on the average equals or exceeds twent -five 25Zpercent of the market value of the structure before the damage occurred. Substantial improvement -- Any combination of repairs reconstruction rehabilitation addition or other improvement of a structure, taking_place during any one near period whereby the cost of which equals or exceeds fifty~50~ercent of the market value of the structure before the start of construction of the improvement. This term includes structures, which have incurred substantial damage regardless of the actual repair work performed. The term does not, however include either any correction of existing violations of State or Orange County health sanitary or safety code specifications which have been identified by the Orange County code enforcement official and which are the minimum necessary to assure safe living conditions, or any alteration of a historic structure provided that the alteration will not preclude the structure's continued designation as a historic structure. Water surface elevation (WSE) -- The height, in relation to mean sea level of floods of various magnitudes and frequencies in the floodplains of coastal or riverine areas. Watercourse -- A lake, river, creek stream wash channel or other topographic feature on or over which waters flow at least periodically. Watercourse includes specificall~gnated areas in which substantial flood damage may occur. Violation -- The failure of a structure use or development to be fully compliant or is inconsistent with any provision of this Ordinance. A structure or other development without the elevation certificate other