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

Contracting organization: Kyushu Regional Environmental Office, Ministry of the Environment

1. Items Subject to BiddingProject Name: FY2026 (Supplementary) Aso-Kuju National Park Chojabaru Visitor Center Septic Tank and Facility Renovation Work (Third Re-announcement)Project Location: 255-33 Oaza-Tano, Kokonoe-machi, Kusu-gun, Oita PrefectureProject Scope:Chojabaru Visitor Center: 2-story RC structure, 698 sqm total floor area. Replacement of auxiliary septic tank (soil microbial membrane combined treatment septic tank, 264-person capacity, 23.6 cubic meters/day).Chojabaru Public Restroom: 1-story wooden/RC structure, 44 sqm total floor area. Interior/exterior renovation, mechanical…