Key legal question
Whether the federal appeal against the cantonal judgment was admissible despite the decision being incidental.
Extracted holding
The cantonal judgment was an incidental decision under the Federal Supreme Court Act, and the appellants failed to show irreparable harm or that an immediate final decision would avoid extensive evidence-taking.
Extracted reasoning
The remand left the noise-remediation issue open and could affect the closure question; prolonged proceedings and additional costs are insufficient irreparable harm.