The Odisha government had raised objections to the project in the apex court by way of a petition and had challenged the environment clearance accorded to the project.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/polavaram-project-sc-issues-notice-centre
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/statesman-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/orissa
[4] http://admin.indiaenvironmentportal.org.in/thesaurus/environment-clearance-ec
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/polavaram
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/andhra-pradesh
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/godavari
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-disputes
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment