Question juridique clé
Whether the appellants had standing to challenge the extension of the landfill operating permit as to access via Ziegeleistrasse and related operating conditions.
Solution extraite
Standing exists only for issues that may still be decided at the operating-permit stage, such as additional operating conditions; a new challenge to the landfill access route itself is excluded because that question was already finally decided in earlier planning/authorization proceedings.
Motifs extraits
Questions intrinsic to the landfill installation belong to the earlier coordinated authorization stage and cannot be reopened in the operating-permit extension. However, operating-permit proceedings may still address burdensome operating conditions aimed at reducing noise, air, or transport impacts.