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SECTION 7. B. Stormwater Management and Flood Protection Permit (Type B). When a development project is determined to be within a Flood Hazard Zone according to the procedure set forth in Section 7 A (19) (a -f), a Type B Permit shall be required and the project shall be reviewed under the criteria of Section 7 (A) and must meet the following additional criteria; (1) An equal volume of storage capacity must be created for any volume of the regulatory flood that would be displaced by fill or structures. (2) The velocity of the regulatory flood must not be adversely altered on any watercourse. (3) All structures, including buried storage tanks, must be anchored as necessary to resist flotation, lateral forces and the impact of floating debris. (4) No development will be allowed that poses a significant threat of releasing harmful quantities of pollutants to surface waters or groundwaters during flooding. (5) The Flood Protection Elevation shall be set for each project at the elevation of the regulatory flood plus one foot. In Coastal High Hazard Zones, the Flood Protection Elevation shall be established with consideration given to wind -drive wave action. (6) Residential buildings must have the lowest floor elevated to the Flood Protection Elevation for that site. (7) Industrial, commercial or other non-residential buildings must have the lowest floor elevated to the Flood Protection Elevation or be flood -proofed as follows: (a) A Florida registered Professional Engineer or Architect must certify that the building has been designed and constructed so that below the Flood Protection Elevation, the structure and attendant utility facilities are watertight and capable of resisting the effects of the regulatory flood. The design must take into account; flood velocities, duration, rate of rise, hydrostatic and hydrodynamic forces, the effect of buoyancy, and impacts from debris. -16-