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Along rivers and streams where BFE data area is provided but neither floodway not non <br />encroachment areas are identified for a SFHA on the FIRM or in the FIS no <br />encroachments, including fill new construction substantial improvements or other <br />development shall be permitted unless certification with supporting technical data by a <br />North Carolina licensed Professional Engineer is provided demonstrating that the <br />cumulative effect of the proposed development when combined with all other existing and <br />anticipated development will not increase the water surface elevation of the base flood by <br />more than one foot at any point within Orange County. <br />See. 6.32.6. F000dway and non - encroachment areas <br />Areas designated as floodways or non - encroachment areas are located within the SFHA <br />established in Section 4.2.39. The floodways and non - encroachment areas are extremely <br />hazardous areas due to the velocity of floodwaters that have erosion potential and carry <br />debris and potential projectiles The following provisions shall apply to all development <br />within such areas: <br />1. No encroachments including fill new construction substantial improvements and <br />other developments shall be permitted unless it has been demonstrated through <br />hydrologic and hydraulic analyses performed according to standard engineering <br />shall be presented to the Floodplain Administrator before issuance of flood lain <br />development permit, <br />2. If the requirements of Section 6.32.2b(t) are adhered to all development shall <br />comply with all applicable flood hazard reduction provisions of this Ordinance No <br />manufactured homes shall be permitted <br />Sec.6.32.7. Standards for Floodplains without Established Base Flood Elevations <br />Within the SFHAs established in Section 4.2.38, where no BFE data has been provided <br />the following provisions shall apply: <br />1. No encroachments, including fill new construction substantial improvements or new <br />development shall be permitted within a distance of twenty feet each side from top of <br />bank or five times the width of the stream whichever is greater, unless certification <br />with supporting technical data by a North Carolina licensed Professional Engineer is <br />provided demonstrating that such encroachments shall not result in any increase in <br />flood levels during the occurrence of the base flood discharge <br />2. If the requirements of Section 6 32 2(1) are adhered to and BFE data are available <br />from other sources, all new construction and substantial improvements within such <br />areas shall also comply with all applicable provisions of this Ordinance and shall be <br />elevated or flood proofed according to elevations established according to Section <br />21.11(11/12). When BFE data are not available from a federal state or other source <br />the reference level, including basement shall be elevated at least two (2) feet above <br />the HAG. <br />