Standards for Co-firing Ratios, Components, and Control Facilities for Fuel Used in Stationary Pollution Sources Article 7

Fuels are to be sampled and tested in accordance with the regulations of the central competent authority.Detailed records are to be made of the actual operation of each fuel used in public or private premises, and they are to be kept for six years for future reference.
中文原文 公私場所固定污染源燃料混燒比例及成分標準第7條
燃料樣品應依中央主管機關公告之規範執行採樣及檢測。
公私場所使用各項燃料之實際運作情形,應詳實建立紀錄,保存六年備查。

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