Fugitive Emission and Noise impact and mitigation measures during the construction of underground station & tunneling at Mumbai Metro Line-3.

Abstract

Noise and air pollution is a very serious issue in this era of underground metro construction. More noise and polluted air can affect both human life and the environment. The metro is under construction in Colaba-Bandra-Seepz (Metro line-3) up to 33.5 km, there are 27 underground stations and twin tunnels. The aim of this paper is to analyze the impact of fugitive emissions and noise and mitigation measures. During underground construction there are various heavy civil works such as mining, excavation, rock breaking, blasting, piling, muck disposal by dumpers, drilling, core cutting, grinding, grouting, concrete cutting, segment casting, etc. and heavy machinery involvedin that activities such as T.B.M. (Tunnel Boring Machine), J.C.B. machine,hydra, various types of cranes, excavators, breakers, rig machine, drilling machine, shotcrete machine, heavy vehicle movement, etc. which creates a huge amount of air and noise pollution. According to C.P.C.B. certain permissible limits for air & noise according to zones such as residential , commercial , industrial, silent zone, which were surveyed for the identification of environmental baseline & monitoring data to improve environmental quality in underground station & tunnel and also suggested some innovation and mitigation measures to control air and noise pollution.