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§ 151.25 GENERAL STANDARDS.
   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 materials and utility equipment resistant to flood damage.
   (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 shall be designed and/or located so as to prevent water from entering or accumulating within the components during conditions of flooding.
   (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 flood waters into the systems and discharges from the systems into flood waters.
   (H)   On-site waste disposal systems shall be located and constructed to avoid impairment to them or contamination from them during flooding.
   (I)   Any alteration, repair, reconstruction or improvements to a building which is not in compliance with the provisions of this chapter, shall meet the requirements of “new construction” as contained in this chapter.
   (J)   Any alteration, repair, reconstruction or improvements to a building which is not in compliance with the provisions of this chapter, shall be undertaken only if said non-conformity is not furthered, extended or replaced.
(Prior Code, § 151.20) (Ord. 151, passed 3-18-1996) Penalty, see § 151.99 
§ 151.26 SPECIFIC STANDARDS.
   In all areas of special flood hazard where base flood elevation data have been provided, as set forth in §§ 151.07 or 151.40(B)(9) of this chapter, the following provisions are required.
   (A)   Residential construction. New construction or substantial improvement of any residential building (or manufactured home) shall have the lowest floor, including basement, elevated one foot above the base flood elevation. Should solid foundation perimeter walls be used to elevate a structure, openings sufficient to facilitate the unimpeded movements of flood waters shall be provided in accordance with standards of division (C) below.
   (B)   Non-residential construction. New construction or substantial improvement of any commercial, industrial or non-residential building (or manufactured home) shall have the lowest floor, including basement, elevated one foot above the base flood elevation. Buildings located in all A Zones may be flood-proofed in lieu of being elevated; provided that, all areas of the building below the required elevation are water-tight with walls substantially impermeable to the passage of water, and use structural components having the capability of resisting hydrostatic and hydrodynamic loads and the effect of buoyancy. A registered professional engineer or architect shall certify that the standards of this division (B) are satisfied. Such certification shall be provided to the official as set forth in § 151.40(B)(7) of this chapter.
   (C)   Elevated buildings. New construction or substantial improvements of elevated buildings that include fully enclosed areas formed by foundation and other exterior walls below the base flood elevation shall be designed to preclude finished living space and designed to allow for the entry and exit of flood waters to automatically equalize hydrostatic flood forces on exterior walls.
      (1)   Designs for complying with this requirement must either be certified by a professional engineer or architect or meet the following minimum criteria:
         (a)   Provide a minimum of two openings having a total net area of not less than one square inch for every square foot of enclosed area subject to flooding;
         (b)   The bottom of all openings shall be no higher than one foot above grade; and
         (c)   Openings may be equipped with screens, louvers, valves or other coverings or devices; provided, they permit the automatic flow of flood waters in both directions.
      (2)   Access to the enclosed area shall be the minimum necessary to allow for parking of vehicles (garage door) or limited storage of maintenance equipment used in connection with the premises (standard exterior door) or entry to the living area (stairway or elevator).
      (3)   The interior portion of such enclosed area shall not be partitioned or finished into separate rooms.
   (D)   Standards for manufactured homes and recreational vehicles.
      (1)   All manufactured homes placed or substantially improved outside of a manufactured home park or subdivision; in a new manufactured home park or subdivision; in an expansion to an existing manufactured home park or subdivision; or in an existing manufactured home park or subdivision on which a manufactured home has incurred “substantial damage” as the result of a flood, must meet all the requirements for new construction, including elevation and anchoring.
      (2)   All manufactured homes placed or substantially improved in an existing manufactured home park or subdivision must be elevated so that:
         (a)   The lowest floor of the manufactured home is elevated to or above the level of the base flood elevation;
         (b)   The manufactured home chassis is supported by reinforced piers or other foundation elements of at least an equivalent strength, of no less than 36 inches in height above grade;
         (c)   The manufactured home must be securely anchored to the adequately anchored foundation system to resist flotation, collapse and lateral movement; and
         (d)   In an existing manufactured home park or subdivision on which a manufactured home has incurred “substantial damage” as the result of a flood, any manufactured home placed or substantially improved must meet the standards of divisions (D)(2)(a) and (D)(2)(c) above.
      (3)   (a)   All recreational vehicles placed on sites must either:
            1.   Be on the site for fewer than 180 consecutive days;
            2.   Be fully licensed and ready for highway use; or
            3.   Meet the permit requirements for new construction, including anchoring and elevation requirements for “manufactured homes”.
         (b)   A recreational vehicle is ready for highway use if it is on its wheels or jacking system, is attached to the site only by quick disconnect type utilities and security devices and has no permanently attached additions.
   (E)   Floodways. Located within areas of special flood hazard established in § 151.07 of this chapter are areas designated as floodways. Since the floodway is an extremely hazardous area due to the velocity of flood waters which carry debris, potential projectiles and has erosion potential, the following provisions shall apply:
      (1)   Prohibit encroachments, including fill, new construction, substantial improvements and other developments unless certification (with supporting technical data) by a registered professional engineer is provided demonstrating that encroachments shall not result in any increase in flood levels during occurrence of base flood discharge; and
      (2)   If division (D)(1) above is satisfied, all new construction and substantial improvements shall comply with all applicable flood hazard reduction provisions of this subchapter.
(Prior Code, § 151.21) (Ord. 151, passed 3-18-1996) Penalty, see § 151.99
§ 151.27 STREAMS WITHOUT ESTABLISHED BASE FLOOD ELEVATION AND/OR FLOODWAYS.
   Located within the areas of special flood hazard established in § 151.07 of this chapter, where streams exist, but where no base flood data has been provided or where base flood data has been provided without floodways, the following provisions apply.
   (A)   No encroachments, including fill material or structures shall be located within areas of special flood hazard, unless certification by a registered professional engineer is provided demonstrating that the cumulative effect of the proposed development, when combined with all other existing and anticipated development will not increase the water surface elevation of the base flood more than one foot at any point within the community. The engineering certification should be supported by technical data that conforms to standard hydraulic engineering principles.
   (B)   New construction or substantial improvements of buildings shall be elevated or flood-proofed to elevations established in accordance with § 151.40(B)(9) of this chapter.
(Prior Code, § 151.22) (Ord. 151, passed 3-18-1996) Penalty, see § 151.99
§ 151.28 SUBDIVISION PROPOSALS.
   (A)   All subdivision proposals shall be consistent with the need to minimize flood damage.
   (B)   All subdivision proposals shall have public utilities and facilities such as sewer, gas, electrical and water systems located and constructed to minimize flood damage.
   (C)   All subdivision proposals shall have adequate drainage provided to reduce exposure to flood hazards.
   (D)   Base flood elevation data shall be provided for subdivision proposals and other proposed development (including manufactured home parks and subdivisions) which is greater than the lesser of 50 lots or five acres.
(Prior Code, § 151.23) (Ord. 151, passed 3-18-1996)
§ 151.29 AREAS OF SHALLOW FLOODING (AO ZONES).
   (A)   Located within the areas of special flood hazard established in § 151.07 of this chapter are areas designated as shallow flooding areas.
   (B)   These areas have special flood hazards associated with base flood depths of one to three feet where a clearly defined channel does not exist and where the path of flooding is unpredictable and indeterminate; therefore, the following provisions apply.
      (1)   All new construction and substantial improvements of residential structures shall have the lowest floor, including basement, elevated above the highest adjacent grade, at least as high as the depth number specified in feet on the city’s FIRM. If no depth number is specified, the lowest floor, including basement, shall be elevated at least two feet above the highest adjacent grade.
      (2)   All new construction and substantial improvements of non-residential structures shall:
         (a)   Have the lowest floor, including basement, elevated above the highest adjacent grade at least as high as the depth number specified in feet on the city’s FIRM. If no depth number is specified, the lowest floor, including basement, shall be elevated at least two feet above the highest adjacent grade; or
         (b)   Together with attendant utilities and sanitary facilities, be completely flood-proofed to or above that level so that any space below that level is watertight with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads and effects of buoyancy.
(Prior Code, § 151.24) (Ord. 151, passed 3-18-1996)
ADMINISTRATION
§ 151.40 DESIGNATION OF LOCAL ADMINISTRATOR; DUTIES AND RESPONSIBILITIES.
   (A)   General. The Flood Safety Officer is hereby appointed to administer and implement the provisions of this chapter.
   (B)   Duties and responsibilities.
      (1)   The duties of the Flood Safety Officer shall include, but not be limited to:
         (a)   Review all development permits to assure that the permit requirements of this chapter have been satisfied;
         (b)   Advise permittee that additional federal or state permits may be required and, if specific federal or state permit requirements are known, require that copies of such permits be provided and maintained on file with the development permit;
         (c)   Notify adjacent communities and the State Division of Water prior to any alteration or relocation of a watercourse, and submit evidence of such notification to the Federal Emergency Management Agency;
         (d)   Assure that maintenance is provided within the altered or relocated portion of said watercourse so that the flood-carrying capacity is not diminished;
         (e)   Verify and record the actual elevation (in relation to mean sea level) of the lowest floor (including basement) of all new or substantially improved buildings, in accordance with § 151.41(B)(2) of this chapter; and
         (f)   Verify and record the actual elevation (in relation to mean sea level) to which the new or substantially improved buildings have been flood-proofed, in accordance with § 151.41(B)(2) of this chapter.
      (2)   When flood-proofing is utilized for a particular building, the Flood Safety Officer shall obtain certification from a registered professional engineer or architect, in accordance with § 151.41(B)(2) of this chapter.
      (3)   Where interpretation is needed as to the exact location of boundaries of the areas of special flood hazard (for example, where there appears to be a conflict between a mapped boundary and actual field conditions), the Flood Safety Officer shall make the necessary interpretation. The person contesting the location of the boundary shall be given a reasonable opportunity to appeal the interpretation as provided in this chapter.
      (4)   When base flood elevation data or floodway data have not been provided in accordance with § 151.07 of this chapter, then the Flood Safety Officer shall obtain, review and reasonably utilize any base flood elevation and floodway data available from a federal, state or other source, in order to administer the provisions of §§ 151.25 through 151.29 of this chapter.
      (5)   All records pertaining to the provisions of this chapter shall be maintained in the office of the City Clerk/Treasurer and shall be open for public inspection.
(Prior Code, § 151.35) (Ord. 151, passed 3-18-1996)
§ 151.41 DEVELOPMENT PERMIT ESTABLISHED; PROCEDURES.
   (A)   General. A development permit shall be required in conformance with the provision of this chapter prior to the commencement of any development activities.
   (B)   Permit procedures. Application for a development permit shall be made to the Flood Safety Officer on forms furnished by him or her prior to any development activities, and may include, but not be limited to, the following: 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. Specifically, the following information is required.
      (1)   Application stage.
         (a)   Elevation in relation to mean sea level of the proposed lowest floor (including basement) of all buildings;
         (b)   Elevation in relation to mean sea level to which any non-residential building will be flood-proofed;
         (c)   Certificate from a registered professional engineer or architect that the non-residential flood-proofed building will meet the flood-proofing criteria in § 151.26(B) of this chapter; and
         (d)   Description of the extent to which any watercourse will be altered or relocated as a result of proposed development.
      (2)   Construction stage. Provide a floor elevation or flood-proofing certification after the lowest floor is completed. Upon placement of the lowest floor, or flood-proofing by whatever construction means, it shall be the duty of the permit holder to submit to the Flood Safety Officer a certification of the elevation of the lowest floor or flood-proofed elevation, 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 same. When flood-proofing is utilized for a particular building, said certification shall be prepared by or under the direct supervision of a professional engineer or architect and certified by same. Any work undertaken prior to the submission of the certification shall be at the permit holder’s risk. The Flood Safety Officer shall review the floor elevation survey data submitted. Deficiencies detected by such review shall be corrected by the permit holder immediately and prior to further progressive work being permitted to proceed. 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.
(Prior Code, § 151.36) (Ord. 151, passed 3-18-1996) Penalty, see § 151.99
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