Standards for Air Pollutant Emission from Stationary Pollution Sources Article 9

For those pollutants from new pollution source emissions that have conversion constants listed in this table, emissions pipe height shall be calculated in accordance with the respective calculation methods of Article 7 and Article 8, and the higher emissions pipe height shall be the emissions pipe height.When the competent authority handles cases involving existing pollution sources, it may order the said existing pollution source to improve emissions concentration or shall apply regulations of the first paragraph to change the emissions pipe height.
中文原文 固定污染源空氣污染物排放標準第9條
新污染源排放之污染物,於附表中列有換算常數值者,應依第七條至第八條所定計算方法分別計算排放管道高度之較高者,為其排放管道高度。
主管機關於處理對既存污源之陳情案件時,得命該既存污染源改善其排放濃度或準用前項規定變更其排放管道高度。

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