Question juridique clé
Whether the appeal was admissible against the cantonal judgment as an incident decision and for lack of irreparable harm.
Solution extraite
The challenged judgment was a non-final remittal decision; the municipality did not show irreparable harm under Art. 93 LTF.
Motifs extraits
The cantonal court left the municipality free to choose how to comply with environmental noise law, including whether to regulate by ordinance; mere prolongation of proceedings and the need to issue a new decision were insufficient.