Nuclear Reactor Facilities Regulation Act Article 27

After the issuance of decommissioning permit, the competent authority may, subject to the circumstances, consult the Ministry of the Interior, the government of special municipality, the county (city) government and relevant authority about the removal or the amendment of the exclusion area and the low population zone. After being approved by the Executive Yuan, those shall be publicized.
中文原文 核子反應器設施管制法第27條
主管機關核發除役許可後,得視情況會商內政部、直轄市、縣(市)政府及有關機關,並報請行政院核定後公告解除或變更禁制區及低密度人口區。

English translation for reference only; the Chinese text prevails. Not legal advice.