| 英文摘要 |
The purpose of this project is to assist Taiwan Environmantal Protection Administration (EPA) in reviewing the environmental impact assessment (EIA) reports regarding the water quality modeling. Four main tasks are conducted to provide technological support in examining the results of water quality modeling which was used in the assessment of surface water quality. The tasks include: (a) reviewing at least 20 EIA reports, (b) incorporating the input parameters required by water quality models and preparing user’s manuals of the water quality models based on EIA cases, (c) applying water quality models to evaluate the effectiveness of pollutant reduction, and (d) hosting workshops to discuss the water quality models. Twenty-two EIA cases were evaluated during this project. One of the EIA cases were assessed by the QUAL2K model, one by WASP model, ten by the simple dilution model, but the other ten cases were not assessed by any models. Two EIA cases were followed up, and comments on the EIA cases were provided during the scoping meeting. Moreover, three modeling cases, Feng-Shan Creek(BASINS/HSPF), Yen-Shiu Creek(QUAL2K), and Ke-Ya Creek(WASP), were selected as user’s manuals. There are twelve user’s manuals totally including nine collected in 2019. With respect to the heavy metal water quality, eight cases were evaluated based on their water quality data, water quality achieving rates, and administrative efforts. And six cases of heavy metal in river sediment quality were also evaluated. Besides, the WASP was applied to XinJie Creek as an example to develop a heavy metal TMDL. The above evaluations were made in public meeting and one workshop on water quality modeling was also organized during this project.
Finally, several suggestions for further investigation are provided. This project recommends that government agencies should work with institute to validate EIA cases with respect to water quality modeling. Moreover, the co-working institute can play a critical role in archiving models and data, maintaining and upgrading them for future applications. The modeling workshop can be extended to two-day class which may substaintially help improve user’s modeling capability.
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