The Commercial Port Law Article 14

If wastes, hazardous substances, sewage have been dumped into the commercial port area through ditches, sewers, or other pipeline facilities, the users or operators shall set up equipment or pollution prevention facilities in the vents, and clean up all the garbage gathered there from.If the users or administrators fail to set up or clean up in accordance with the preceding paragraph, in the international commercial port, the Commercial Port Administrative Authority shall report to the Maritime and Port Bureau in order to consult with relevant authorities and order them to take appropriate measures within a specific period of time, or clean up by the Commercial Port Administrative Authority; And in the domestic commercial port, it shall be cleaned up by the Maritime and Port Bureau or the designated agencies directly, the costs thereof shall be on the users’ or operators’ account.
中文原文 商港法第14條
經由水溝、下水道或其他放流設施排入商港區域之廢棄物、有害物質、污水,其使用人或管理人,應於出口處設置柵欄或防污設施,並應將其所攔集之廢棄物清除之。
前項使用人或管理人不為設置或清除時,國際商港由商港經營事業機構通報航港局會商有關機關,責令限期採取適當之處理措施,或由商港經營事業機構逕行清除;國內商港由航港局或指定機關辦理,所需清除費用,由該使用人或管理人負擔。

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