Planning Portal

Glossary: G


  • GB - Great Britain
  • GDO - Planning (General Development) Order (Northern Ireland) 1993
  • GSM - Global System for Mobile Communications or Groupe Speciale Mobile


  • Greenfield Sites - This term refers to previously undeveloped lands outside the existing urban areas/urban footprints of towns, villages and other small settlements. Greenfield sites are in most cases agricultural lands at the edge of settlements.
  • Groundwater - Water below the surface of the ground in the saturation zone and in direct contact with the ground or subsoil.
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