The multimodal corridor from Naghar to Chirner will require another 205 hectares of forest in Palghar, Thane and Raigad districts. As per the preliminary assessment by MSRDC, around 5,135 trees will be affected due to the project, and hence the development authority has approached the Union environment ministry seeking clearance. According to the proposal submitted to the Ministry of Environment, Forest and Climate Change, a total of 33.278 ha forest area from Palghar, 99.8834 ha forest area from Thane and 72.654 ha from Raigad will have to make way for the project. 

It may be noted that Mumbai Metropolitan Region is one of the fastest growing metropolises in India with a population of 19 million. It is ranked as the sixth largest metropolitan region in the world.