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(2) The BFE used in determining the regulatory flood protection elevation shall be determined based on the following criteria: (a) When Base Flood Elevation (BFE) data is available from other sources, all new construction and substantial improvements within such areas shall also comply with all applicable provisions of this ordinance and shall be elevated or floodproofed in accordance with standards in Article 5, Sections A and B. (b) When floodway data is available from a Federal, State, or other source, all new construction and substantial improvements within floodway areas shall also comply with the requirements of Article 5, Sections B and F. (c) All subdivision, manufactured home park and other development proposals shall provide Base Flood Elevation (BFE) data if development is greater than five (5) acres or has more than fifty (50) lots/manufactured home sites. Such Base Flood Elevation (BFE) data shall be adopted by reference in accordance with Article 3, Section B and utilized in implementing this ordinance. (d) When Base Flood Elevation (BFE) data is not available from a Federal, State, or other source as outlined above, the reference level shall be elevated or floodproofed (nonresidential) to or above the Regulatory Flood Protection Elevation, as defined in Article 2. All other applicable provisions of Article 5, Section B shall also apply. SECTION E. STANDARDS FOR RIVERINE FGOODPLAINS W[TH BFE BUT WITHOUT ESTABLISHED FGOODWAYS OR NON-ENCROACHMENT AREAS. Along rivers and streams where BFE data is provided by FEMA or is available from another source but neither floodway nor non-encroachment areas are identified for a Special Flood Hazard Area on the FIRM or in the FIS report, the following requirements shall apply to all development within such areas: (t) Standards of Article 5, Sections A and B; and (2) Until a regulatory floodway or non-encroachment area is designated, no encroachments, including fill, new construction, substantial improvements, or other development, shall be permitted unless certification with supporting technical data 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 (I) foot at any point within the community. SECTION F. FLOODWAYS AND NON-ENCROACHMENT AREAS. Areas designated as floodways or non-encroachment areas are located within the Special Flood Hazard Areas established in Article 3, Section B. The floodways and non-encroachment areas are extremely hazardous areas due to the velocity of floodwaters that have erosion potential and carry debris and potential projectiles. The following provisions, in addition to standards outlined in Article 5, Sections A and B, shall apply to all development within such areas: (I) No encroachments, including fill, new construction, substantial improvements and other developments shall be petmitted unless: (a) it is demonstrated that the proposed encroachment would not result in any increase in the flood levels during the occurrence of the base flood, based on hydrologic and hydraulic analyses performed in accordance with standard engineering practice and presented to the Floodplain Administrator prior to issuance of floodplain development permit, or (b) a Conditional Letter of tap Revision (CLOMR) has been approved by FEMA. A Letter of Map Revision (LObIR) must also be obtained upon completion of-[he proposed encroachment. (3j tf .article ~, Section F(I) is satisfied, all development shall comply with all applicable flood hazard reduction provisions of this ordinance. (3) No manufactured homes shall be permitted. except replacement manufactured homes in an esis[ing manufactured home park or subdivision, provided the following provisions are mer "~ July J. Z00' 19