1. The defendant's appeal is dismissed.
2. The Intervenor joining the Defendant shall bear the costs of the intervention in the appeal.
The court's explanation of this case is the same as the part of the reasoning of the judgment of the first instance, and thus, citing this case in accordance with Article 8 (2) of the Administrative Litigation Act and the main sentence of Article 420 of the Civil Procedure Act.
In conclusion, the judgment of the court of first instance is legitimate, and the defendant's appeal is dismissed as it is without merit. It is so decided as per Disposition.