The costs of appeal are assessed against the Plaintiffs, including the part resulting from the supplementary participation.

1. Regarding the plaintiffs' common grounds of appeal

A. As a matter of principle, an administrative agency’s disposition on the grounds of appeal regarding the disposition of a government’s basic plan refers to an act under the public law of an administrative agency as an act directly related to the rights and obligations of the people, such as ordering the establishment of rights or the burden of obligations with respect to a specific matter, or directly giving rise to other legal effects. Thus, an act that does not directly change the legal status of the other party or related persons, such as internal decision-making

(2) According to the reasoning of the first instance judgment cited by the lower court and the records, the term “the fourth river master plan” published on June 8, 2009 jointly by the Ministry of Land, Transport and Maritime Affairs, the Ministry of Environment, the Ministry of Culture, Sports and Tourism, and the Ministry for Food, Agriculture, Forestry and Fisheries (hereinafter “the instant master plan”) is the purpose of the fourth river improvement project including Han River, the Han River, the Nakdong River, the Nakdong River, the Geum River, the Geum River, the Geum River, the Yeongsan River, the Yeongsan River, and the Yeongsan River, the establishment of a foundation for green growth, etc., of the project, including “the main project,” “the main project, the extension of national land, the balanced regional development, and the construction of the foundation for green growth,” which is implemented in the main Chapter of the fourth River, and “the projects connected with the implementation of the project, the modification of the project, and the modification of the water supply plan, etc., the term “the development of a river environment and the development of new water resources environment” as an annual plan to manage and manage the environment.