Soil and water Conservation Act Article 6

Where the soil and water conservation treatment and maintenance is of a certain scale or above as designated by the central competent authority, the project shall be planned, designed and supervised by soil and water conservation technicians, civil engineering technicians, Hydraulic engineering technicians, land engineering technicians, and other relevant professional engineers legally registered and practicing, or by the relevant technical consulting institutions employing the above professional engineers. Where the project is to be implemented by the government authority at any level, a public business institution, or a public entity on its own, such planning, design and supervision may be undertaken by persons in the above authority, institution or entity who have obtained by act the technician's license in a comparable category.
中文原文 水土保持法第6條
水土保持之處理與維護在中央主管機關指定規模以上者,應由依法登記執業之水土保持技師、土木工程技師、水利工程技師、大地工程技師等相關專業技師或聘有上列專業技師之技術顧問機構規劃、設計及監造。
但各級政府機關、公營事業機構及公法人自行興辦者,得由該機關、機構或法人內依法取得相當類科技師證書者為之。

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