(A) Site plans are required for all development, new construction and substantial improvements determined to be located in a special flood hazard area and all proposed subdivisions and manufactured home parks. These proposals shall be reviewed by the Floodplain Administrator to assure that they are consistent with the need to minimize flood damage.
(B) The owner or developer shall submit a preliminary site plan to the Floodplain Administrator that includes the following information:
(1) A map showing the location of the proposed subdivision and/or development with respect to special flood hazard areas, proposed lot sites and fills;
(2) Name of registered professional engineer, licensed professional surveyor or other qualified person responsible for providing the information required in this section;
(3) Where the subdivision or manufactured home park lie partially or completely in the special flood hazard areas, the plan map shall include detailed information giving the location and elevation of proposed roads, public utilities and building sites. All such maps shall also show contours at intervals of two or five feet depending upon the slope of the land and identify accurately the boundaries of the special flood hazard areas. A registered professional engineer or licensed professional surveyor shall certify the site plan;
(4) All subdivision proposals and other proposed new developments which are proposed to take place either fully or partially within the approximated floodplain and which are greater than ten lots or two acres, whichever is the lesser, shall include base flood elevation data and shall delineate a floodway when directed to do so by the Floodplain Administrator.
(a) When a Flood Insurance Study (FIS) is available from FEMA, the data contained in that study shall be used to substantiate the base flood.
(b) If a FEMA Flood Insurance Study is not available the required data may be available from an authoritative source, such as the U.S. Army Corps of Engineers, U.S. Geological Survey, Natural Resource Conservation Service or state and local Water Resource Department.
(c) If the required data is not available from other sources the applicant shall develop the technical data using detailed methodologies comparable to those contained in a Flood Insurance Study. This data shall be prepared and certified by a registered professional engineer, who shall certify that the methods used correctly reflect currently accepted technical concepts.
(5) Where the subdivision or other development site lies partially in the special flood hazard area and all proposed development including fill will take place on natural grade a significant vertical distance above the approximated floodplain area (Zone “A”) boundary depicted on the map, development of detailed base flood elevation data may not be necessary. In these cases, the site plan for the proposed development must show contours at intervals of two or five feet, depending on the slope, and clearly delineate the area to be developed and the location of the special flood hazard boundary area as scaled from the FEMA map. A registered professional engineer or licensed professional surveyor shall certify the site plan.
(Ord. passed 6-11-2012)