Questão jurídica principal
Whether the cantonal court violated the right to be heard by deciding without further clarification and renewed submissions.
Decisão extraída
Any hearing defect could be cured before the Federal Supreme Court; no ground for reversal followed from the alleged procedural flaw.
Fundamentação extraída
The remand only required a ruling on precautionary emission limits. The cantonal court could dispense with further evidence, and any possible hearing violation was curable because the Federal Supreme Court had full review powers over the facts and the federal environmental-law issues.