Please provide a typical list of service utilities, machinery and equipment that must be elevated to the DFE. Also, if these cannot be elevated to the DFE, please explain ‘floodproofing’ and how this can be achieved that is FEMA-acceptable.

A list of utility services, machinery and equipment that must be elevated to the DFE can be found in FEMA P-348, Protecting Building Utility Systems from Flood Damage, Edition 2, February 2017. If these services, machinery and equipment cannot be elevated, then the NFIP states they must be designed and constructed to prevent entry and accumulation of floodwaters. While this is very difficult to achieve, examples of FEMA-acceptable ‘floodproofing’ techniques may include placement of below-BFE utilities in a flood-resistant enclosure such as a low floodwall or a large floodproof vault.