The state environment department
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/fuel-pump-sale-bar-dies-quiet-death
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/telegraph-kolkata
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pollution-under-control-certification
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy-policy
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/calcutta-d