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新潟市の液状化対策 “集水管”設置公開に耐用年数めぐる質問「30年後に交換必要?」 “住民負担”前提の維持管理費に懸念の声も「少し心配」 (26/09/05 19:00)

JAPAN NEWS NIIGATA JAPAN NEWS NIIGATA · SEP 05, 2026

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