The Union Environment Ministry in a notification has clarified that melting of coal tar does not cause pollution of either air or water.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/coal-tar-melting-dosent-cause-pollution-ministry
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/business-standard-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment-impact-assessment-eia
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/forest-act-1980
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wildlife-act-1972
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-act-1974
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/coastal-regulations
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ministry-environment-and-forests-moef
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment