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Study on Cumulative Environmental Impacts Assessment Standard and Integrate to Geographic Information System（2）

Absrtact	This study continues the project of ”Study on Cumulative Environmental Impacts Assessment Standard and Integrate to Geographic Information System” to collect and analyze data of major streams and pollution sources from different agencies. These data were further used as bases to establish the evaluation standard for cumulative environment impact assessment. The Tochen River and Baoshan reservoir are used as case studies, in which the evaluation standards of cumulative environment impact assessment are assessed. Moreover, this report also demonstrates how developers can use GIS to search for allowable pollutant loading for their developing area. The evaluative methods of unit area pollution load of nitrogen and total phosphorous have been established in this study. The major tasks in this study include estimating nonpoint pollution, pollutant transporting in river, and total mass allocation. This study applies GWLF model to simulate nonpoint pollution and uses QUAL2E model to assess pollutant transporting in river. Furthermore, Vollenweider Eutrophication model is applied to estimate allowable maximum total phosphorus from upstream. Then, the allowable maximum total phosphorus is converted into unit area phosphorus pollution load of upstream watershed. This study also analyzes possible unit area pollution load of nitrogen and phosphorous for different risk levels, which can be applied as the evaluation standard of EIA. This research collects 50 EIA reports accepted by Environmental Protection Agency from January 2002 to March 2003. Beside, this research also collects 589 EIA reports from local governments, which 187 reports are from environmental protection agency of Taiwan province and 402 reports are from county and city governments. This study has established a geographic information system with functions of searching, creating new records, editing and maintaining existing records. Relative spatial attributes about water quality from collected EIA reports have been input in the database.
Keyword	Cumulative environmental impact assessment,Total mass control,Geographic Information System

Absrtact

This study continues the project of ”Study on Cumulative Environmental Impacts Assessment Standard and Integrate to Geographic Information System” to collect and analyze data of major streams and pollution sources from different agencies. These data were further used as bases to establish the evaluation standard for cumulative environment impact assessment. The Tochen River and Baoshan reservoir are used as case studies, in which the evaluation standards of cumulative environment impact assessment are assessed. Moreover, this report also demonstrates how developers can use GIS to search for allowable pollutant loading for their developing area. The evaluative methods of unit area pollution load of nitrogen and total phosphorous have been established in this study. The major tasks in this study include estimating nonpoint pollution, pollutant transporting in river, and total mass allocation. This study applies GWLF model to simulate nonpoint pollution and uses QUAL2E model to assess pollutant transporting in river. Furthermore, Vollenweider Eutrophication model is applied to estimate allowable maximum total phosphorus from upstream. Then, the allowable maximum total phosphorus is converted into unit area phosphorus pollution load of upstream watershed. This study also analyzes possible unit area pollution load of nitrogen and phosphorous for different risk levels, which can be applied as the evaluation standard of EIA. This research collects 50 EIA reports accepted by Environmental Protection Agency from January 2002 to March 2003. Beside, this research also collects 589 EIA reports from local governments, which 187 reports are from environmental protection agency of Taiwan province and 402 reports are from county and city governments. This study has established a geographic information system with functions of searching, creating new records, editing and maintaining existing records. Relative spatial attributes about water quality from collected EIA reports have been input in the database.

Keyword

Cumulative environmental impact assessment,Total mass control,Geographic Information System