Chapter 27 Flood Plain Management

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FLOODPLAIN MANAGEMENT § 27-16 (B) The certification of lowest floor elevation; (C) The certification of floodproofing for spaces below the base flood elevation; (D) The certification of final pad elevation where a site is filled above the base flood elevation; (E) The certification that an encroachment in the floodway will not result in any increase in flood levels during base flood discharge; and (F) The certification of elevation and structural support for structures in the coastal high hazard area. (3) Notification of actions that may alter the boundaries of flood hazard areas on Federal Emergency Management Agency Flood Insurance Rate Maps. (A) The floodplain administrator shall notify the council of the following actions when they relate to areas located within Hawai`i County: (i) A Federal Emergency Management Agency initiated map study or restudy of flood hazard areas; (ii) A floodplain administrator initiated map revision process, pursuant to part 65 of the National Flood Insurance Program Regulations; and (iii) A floodplain administrator initiated map revision process, pursuant to a Federal Emergency Management Agency Cooperative Technical Partners Initiative. (B) Notification shall consist of a written message from the floodplain administrator to the County council and shall be submitted to the County council as soon as practical, but no later than sixty days after the date the department of the floodplain administrator initiates any of the actions described in paragraph (3)(A) of this section. Notification shall include, but not be limited to: (i) Identification of the stream or general area being studied or revised; and (ii) The name of the entity undertaking the flood mapping study, restudy, or revision process. (4) Interpretation of maps. The floodplain administrator shall make interpretations where needed, as to the exact location of the boundaries of the areas of special flood hazards (for example, where there appears to be a conflict between a mapped boundary and actual field conditions). A person contesting the location of the boundary shall be given a reasonable opportunity to appeal the interpretation as provided in article 5. (5) Initiating changes in base flood elevations. Whenever base flood elevations increase or decrease or result in a mappable alteration of the boundaries of any special flood hazard area, as a result of physical changes affecting flooding conditions, as soon as practical, but no later than six months after the date such information becomes available, the floodplain administrator shall notify the Federal Emergency Management Agency of the changes by submitting technical or scientific data through the Letter of Map Revision process. Such a submission is necessary so that upon 27-15 SUPP. 4 (7-2018)