Vanashakti, an environmental NGO, claims that stone quarrying in the vicinity of Ambernath in Thane is causing environmental degradation. Concerned about the impact on a forested mountain near Koprachiwadi village, environmentalists have written to the Thane district collector and the Maharashtra Pollution Control Board (MPCB). They provided evidence of air pollution, blocked river streams, and shared Google Earth imagery depicting activities like blasting, quarrying, and stone crushing at the site.

In an email complaint letter, Vanashakti alleged that the forested mountain is being vertically sliced off, with daily use of substantial explosives for mountain blasting. The letter further claims that the quarried area exceeds the allotted four hectares for the company, reaching approximately six to seven hectares. Beyond environmental concerns, the complaint highlights the proximity of people living within 200 metres of the blast site, causing significant air pollution. Additionally, the crusher operations have resulted in blocked mountain streams and the discharge of crushed rock residue into a nearby river stream.