Questão jurídica principal
Whether the federal appeal was admissible against the cantonal approval of the zoning plan.
Decisão extraída
The appeal was admissible insofar as the plan contained directly applicable federal-law determinations; related planning objections could also be reviewed.
Fundamentação extraída
Although the measure was formally a land-use plan, it also functioned as an individual administrative act based on directly applicable environmental, forest and water-law provisions.