Question juridique clé
Whether the federal administrative appeal was admissible against the cantonal planning decision and related federal-law aspects.
Solution extraite
The appeal was admissible only insofar as federal water-protection law was invoked; other planning-law complaints about balancing and planning principles belonged to constitutional review.
Motifs extraits
The project was treated as a special land-use plan. Appeals under Art. 34 RPG extend to cases where Art. 24 RPG was wrongly not applied, and to planning orders based on federal administrative law such as water-protection provisions.