Noise Abatement Ordinance
(NAO)

¹ Sta­tion­ary in­stall­a­tions are deemed to be new sta­tion­ary in­stall­a­tions if the de­cision au­thor­ising the start of build­ing work has not yet taken full leg­al ef­fect when this Or­din­ance comes in­to force.

² For sta­tion­ary in­stall­a­tions that are to be mod­i­fied, Art­icles 8-12 ap­ply only if the de­cision au­thor­ising the modi­fic­a­tion has not yet taken full leg­al ef­fect when this Or­din­ance comes in­to force.

³ Build­ings are deemed to be new build­ings if plan­ning per­mis­sion has not yet taken full leg­al ef­fect when this Or­din­ance comes in­to force.

⁴ For build­ings that must be mod­i­fied, Art­icles 31 and 32 para­graph 3 ap­ply only if plan­ning per­mis­sion has not yet taken full leg­al ef­fect when this Or­din­ance comes in­to force.