Report on the execution of environmental assesment following constrction of large scale residential land

This report describes the results of assesment of environmental effects which was con ducted at the site of residential land developmentin eastern region of Toyota City, which is located at near the center of Aichi Prefecture and is showing rapid expansion arised fromautomotive industry. As the result of extraction and investigation of factors which affect the environment of the area and its circumference, it was expected that the effluent water during construction work will influence mostly on water qualities of River Tomoe-gawa and River Yahagi-gawa . Hence, mean of protection of environment, following 3 items were considered and carried out .(1) Minimization of effluence of muddy water by division and reduction of working area.(2) Fundamentally, prevent direct flow out of effluent from construction site into water basin, and provide with complere facility for making retention time of effluent longer, and for promoting sedimentation.(3) Watch the change of water quality by conducting monitoring of muddiness and PH of water in construction site and at the fixed places of River Tomoe-gawa