§ 152.20  STANDARDS IN GENERAL.
   In all areas of special flood hazard the following provisions are required:
   (A)   New construction and substantial improvements shall be anchored to prevent flotation, collapse or lateral movement of the structure;
   (B)   Manufactured homes shall be anchored to prevent flotation, collapse or lateral movement.  Methods of anchoring may include, but are not limited to, use of over-the-top or frame ties to ground anchors. This standard shall be in addition to, and consistent with, applicable state requirements for resisting wind forces;
   (C)   New construction and substantial improvements shall be constructed with only flood-resistant materials below the design flood elevation;
   (D)   New construction or substantial improvements shall be constructed by methods and practices that minimize flood damage;
   (E)   Electrical, heating, ventilation, plumbing, air conditioning equipment, and other service facilities (including ductwork) shall not be located below the design flood elevation in new construction and substantial improvement construction. This requirement does not preclude the installation of outdoor faucets for hoses, shower heads and sinks; provided disconnect and/or back-flow devices are installed to prevent contamination to the water supply system, and no connection is made to the sanitary waste collection system;
   (F)   New and replacement water supply systems shall be designed to minimize or eliminate infiltration of flood waters into the system;
   (G)   New and replacement sanitary sewage systems shall be designed to minimize or eliminate infiltration of floodwaters into the systems and discharges from the systems into floodwaters. On-site waste disposal systems shall be located and constructed to avoid impairment to them or contamination from them during flooding;
   (H)   Any alteration, repair, reconstruction or improvements to a building in compliance with the provisions of this section, shall meet the requirements of new construction as contained in this chapter; and
   (I)   Any alteration, repair, reconstruction or improvements to a building not in compliance with the provisions of this chapter, shall be undertaken only if the nonconformity is not furthered, extended or replaced, if classified as a substantial improvement;
   (J)   Notwithstanding substantial improvement or substantial damage construction, the minimum elevation of the lowest floor of an improvement or addition to a non-compliant building shall not be less than the existing lowest floor elevation of the existing building; and all new materials installed below the design flood elevation shall be flood-resistant;
   (K)   New or replacement electrical, heating, ventilation, plumbing, and air conditioning equipment installed in non-compliant buildings, where substantial improvement or damage is not a factor, shall be elevated to at least the existing lowest floor level; and ductwork installed below the design flood elevation shall be designed so as to prevent water from entering or accumulating within during conditions of flooding;
   (L)   Sanitary landfills are prohibited;
   (M)   New critical facilities are prohibited from the 500-year floodplain. This includes those areas designated as VE, AE, and X (shaded) on the applicable FIRM.
   (N)   Elevators shall be installed in accordance with FEMA Technical Bulletin 4-93, “Elevator Installation for Buildings Located in Special Flood Hazard Areas”, which is incorporated herein by reference, specifically including any subsequent revisions thereto.
   (O)   Review all permit applications to determine whether proposed building sites will be reasonably safe from flooding.
   (P)   All gas or liquid storage tanks, either located above ground or buried, shall be anchored to prevent flotation and lateral movement resulting from hydrodynamic and hydrostatic loads.
(‘81 Code, § 152.05 a.) (Ord. passed 3-5-84; Am. Ord. passed 6-11-91; Am. Ord. passed 12-17-91; Am. Ord. passed 5-19-92; Am. Ord. 07055, passed 9-11-07; Am. Ord. 18039, passed 6-14-18)