Renovation of Septic Tank and Facilities at Aso-Kuju National Park Chojabaru Visitor Center

Contracting organization: Ministry of the Environment

1. Project Overview(1) Project Name: FY2026 (Supplementary) Aso-Kuju National Park Chojabaru Visitor Center Septic Tank and Facilities Renovation Work (Fourth Re-announcement)(2) Location: 255-33 Tano, Kokonoe-machi, Kusu-gun, Oita Prefecture(3) Scope of Work:Chojabaru Visitor Center: RC 2-story building, 698 sqm. Replacement of auxiliary septic tank (soil microbial membrane combined treatment septic tank, 264-person capacity, 23.6 cubic meters/day).Chojabaru Public Toilet: Wooden/RC 1-story building, 44 sqm. Interior/exterior renovation, mechanical equipment renovation, and electrical equipm…