2008.4-2009.3 Yearbook of NILIM
Research Summary


Environment Department

Reference Number Y080102
Title Research on quality of run off from road surface
Start-End Date 2003.4-2009.3
Division Road Environment Division
Author Head,Yoshiharu NAMIKAWA
Senior researcher,Shinri@SONE
Researcher, Masamichi TAKIMOTO
Summary The purpose of this research is to ascertain the relations between roadway drainage and its environmental impacts. In this research, we measured the concentration of suspended solids, zinc and lead in roadway drainage which was obtained at national highways. And we examine emission source of those chemical substances and effect of countermeasures.