THE SUBANSIRI hydel project in Arunachal Pradesh may not take off as the ministry of environment and forests feels it will cause irreparable damage to the biodiversity of the region. This contrasts with the support the project has got from both the Planning Commission and the water resources ministry. These two allege that the Rs 5,000 crore project, supposed to generate 4,800 MW, has fallen prey to the MEF's idiosyncrasies.