"The proposal was first vetted by the expert appraisal committee.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/ongc-gets-environmental-clearance-drilling-kg-basin
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/indian-express-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/andhra-pradesh
[4] http://admin.indiaenvironmentportal.org.in/thesaurus/environment-clearance-ec
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/natural-gas-exploration
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/oil-and-natural-gas-corporation-ongc
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/east-godavari
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment