Noise Abatement Ordinance
(NAO)

¹ The en­force­ment au­thor­it­ies state the per­mit­ted noise ex­pos­ure level in their de­cision on the con­struc­tion, al­ter­a­tion or im­prove­ment of an in­stall­a­tion.

² If it is es­tab­lished or an­ti­cip­ated that the noise ex­pos­ure levels due to an in­stall­a­tion will de­vi­ate sig­ni­fic­antly and per­man­ently from those quoted in the de­cision, the en­force­ment au­thor­it­ies shall take the ne­ces­sary meas­ures.

³ The FOEN may is­sue re­com­mend­a­tions on the stand­ard­ised re­cord­ing and present­a­tion of the noise ex­pos­ure levels in these de­cisions.