Art. 55

1. This Act shall be subject to an optional referendum.
2. The Federal Council shall set the commencement date.

Commencement date: 1 August 2005¹
Art. 19 para. 2 let. a and d, 34 para. 1 let. e, 38, 49 para. 3 let. e and Annex No II 2
(Art. 39 para. 1^bisof the Environmental Protection Act): 1 January 2005²