Federal Act
on the Protection of the Environment
(Environmental Protection Act, EPA)

¹ If am­bi­ent noise levels in ex­ist­ing build­ings near ex­ist­ing roads, air­ports, rail­way in­stall­a­tions or oth­er pub­lic or li­censed fixed in­stall­a­tions can­not be re­duced to be­low the alarm val­ues by meas­ures taken at their source, the own­ers of the build­ings con­cerned are re­quired to pro­tect areas used for long-stay ac­com­mod­a­tion by provid­ing sound­proof win­dows or by oth­er sim­il­ar build­ing meas­ures.

² The own­ers of fixed in­stall­a­tions emit­ting noise bear the cost of the re­quired sound­proof­ing meas­ures un­less they can prove that when the plan­ning ap­plic­a­tion was made for the build­ing in ques­tion:

a.

the am­bi­ent lim­it val­ues were already be­ing ex­ceeded; or

b.

the in­stall­a­tion plans had already been made pub­lic.