Ecological risk assessment (ERA) is applied to assess the possible negative effects to the
ecosystem of an industrial harbor. To investigate the effects of anthropogenic organic compounds
(AOCs) to the studied site, various cases of marine pollution in the world were reviewed to establish a conceptual model for the study. Polycyclic aromatic hydrocarbons (PAHs) are one kind of AOCs that has known toxicity and may affect human environment and ecosystem. Hoping Harbor is located in the east coast of Taiwan where agriculture is the main livelihood. Therefore, we can rule out most of the PAHs pollution from convectional sources in that area and focus on the anthropogenic sources which were generated due to daily activities within the harbor. The studied site has been operated for one decade as an industrial harbor for import/export of raw materials and finished goods for the nearby Hoping Industrial Park, and allowed both domestic and foreign vessels entry into the harbor. Hoping Industrial Park has a major coal fired power plant and a cement manufacture plant. Generally, PAHs emissions from power plants and cement manufactures are the dominated pollutants have been proved by numerous studies. In the study, based on ERA, the stresses, exposures and receivers were investigated to define the targeted marine biota and assess the effects in the studied site.