Odisha's Biju Janata Dal (BJD) party has warned of protests regarding the Polavaram irrigation project, alleging it lacks valid environmental clearances for revised parameters. The BJD claims the project's specifications were unilaterally changed in 2006, increasing flood discharge capacity and submergence levels without consulting affected states like Odisha. The party demands a fresh study, citing concerns over the potential impact on Particularly Vulnerable Tribal Groups (PVTGs) and citing studies estimating higher submergence levels than official projections.