Notes: Since 1998, standby sump(s) are required in all new buildings. All buildings in High Radon Areas also require a fully sealed membrane over the entire footpring of the building. These requirements are set out in Technical Guidance C: <<http://www.epa.ie/pubs/advice/radiation/dehlgtechguidancedocc.html>>. A High Radon Area is an area where it is predicted the 10% or more of homes will have radon levels above the 200 Bq/m3 Reference Level.
  