The construction on a ready mix concrete (RMC) plant at a quarry on Parsik Hill has raised  eyebrows as such work is not permitted in forest areas. According to the NGO Nat Connect Foundation, the Forest Department has given over 138 hectares meant for quarrying on Parsik Hill to CIDCO, for resettling Project Affected People (PAP) for lands taken over 50 years ago for the development of Navi Mumbai. The NGO also claimed that the quarrying has been stopped for five years following a ruling by the National Green Tribunal stipulating environmental clearance for digging the hills.