The Union Environment Ministry has extended the 1996 CZMP at least five times in the past although the State government made vain attempts to bring new CZMP in 2013.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/old-czmp-expires-%E2%80%98incomplete%E2%80%99-plan-submitted
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/new-indian-express-chennai
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tamil-nadu
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/coastal-regulations
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tsunami
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sea-level-rise
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment