What are the site preparation requirements in Northern Ireland?

"0.1 It is the view of the Department that the requirements of regulation 26(1) will be met by making reasonable provisions to prevent harmful effects on the building and to secure the health and safety of persons in and about the building against adverse effects of – (a) unsuitable material including vegetable soil; and (b) contaminants on the site and the ground adjacent to the building." [3] "0.3 The guidance in Section 2 is to ensure that the site is prepared and treated to prevent harmful effect on the building and on the health and safety of the occupants by requiring an appropriate site investigation to be carried out and the findings used to determine the extent of site preparation work needed. Vegetable matter and other unsuitable materials should be removed from the ground to be covered by the building." [3] "0.4 The guidance in Section 3 is to ensure that where a dwelling is located in the radon risk category of 1­3% or any category above this risk on the radon map in ‘Radon in Dwellings in Northern Ireland: 2009 Review and Atlas’ then radon protection will be required. Where man­made contaminants have not been identified in the normal way at planning stage, but are discovered during the building process, then in this exceptional circumstance the district council will require the site to be remediated." [3] "Part C (comprising regulations 25 – 29) of the Building Regulations which sets out the requirements for site preparation and resistance to contaminants and moisture, has been replicated below for the convenience of the user of this Technical Booklet and is taken directly from the Building Regulations (Northern Ireland) 2012." [4]

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