According to the environmental carrying capacity, total load control aimed to develop and use environmental resources under the acceptable capacity, reducing the impacts and hazards of unsuitable developments and uses. Meanwhile, total load control focuses on the individual environmental characteristics and carrying capacity to determine the standards of total load based on the capacities of water, air, land, soil, transportation, and so on. The approaches of this study are as follows. First, we collected and analyzed all related projects commissioned by EPA in the past, and then compared and assessed the different methods, content, and conclusions of those projects. According the compared results, we set up the operation processes of environmental sensitive area delimitation, total load control analysis, total load control standards and control strategies making and environmental geographic information system framework. After that, we apply the operation processes to a case study, the Hsin-Chu Area. The results of this project entirely included relative projects. After the case study and setting up townscape total load control and control standards of environmental sensitivity area, air quality, water quality, water source, soil quality, transportation, land use and waste, we build up geographic information system framework of total load control in environmental impact assessment. All study data were collected into this GIS framework.

Environmental Impact Assessment,Total Load Control,Carrying Capacity,Assimilative Capacity