All that is required in many a case is final letter from ministry which is not being given, govt sources say.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/moef-sits-cleared-projects-while-pushes-investments
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/business-standard-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ministry-environment-and-forests-moef
[4] http://admin.indiaenvironmentportal.org.in/thesaurus/environment-clearance-ec
[5] http://admin.indiaenvironmentportal.org.in/thesaurus/central-expert-appraisal-committee-ceac
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/andhra-pradesh
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/thermal-power-plants
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/gujarat
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/natural-gas
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sunita-narain
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/gujarat-adani-port-limited-gapl
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/orissa
[15] http://admin.indiaenvironmentportal.org.in/category/thesaurus/hindustan-aluminium-company-hindalco
[16] http://admin.indiaenvironmentportal.org.in/category/thesaurus/raigarh-d
[17] http://admin.indiaenvironmentportal.org.in/category/thesaurus/chhattisgarh