Rating system was evolved by Confederation of Indian Industry
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/tiruchi-railway-junction-track-%E2%80%98green%E2%80%99-rating
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-chennai
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tamil-nadu
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tiruchirapalli-t
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rail-transport
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy-efficiency
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sanitation
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment-management
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment