Some others may need legislative amendments to laws
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/pmo-ordered-60-changes-green-clearances-environment-ministry-delivered-most
[2] http://admin.indiaenvironmentportal.org.in/category/author/nitin-sethi-0
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/business-standard-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment
[5] http://admin.indiaenvironmentportal.org.in/thesaurus/environment-clearance-ec
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/regulations
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/transport
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/highways
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/power-industry
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/coal
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/iron-and-steel-industry-0
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment-act-1986
[13] http://admin.indiaenvironmentportal.org.in/thesaurus/central-expert-appraisal-committee-ceac
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/corporate-social-responsibility
[15] http://admin.indiaenvironmentportal.org.in/category/thesaurus/coastal-regulations