Dear Mr. Vamsi,
Yes, it is the responsibility of Local Government authorities.
In the District Crisis Group, District Collector is the Chairman, other district govt. officials from different departments like Police, Health, Transport, Animal husbendary, Civil Supplys, Factories Inspectorate, Pollution Control Board etc... are the members in the committee.
Off-site Emergency Plan directions available in the "The Manufacturing, Storage and Import of Hazardous Chemicals Rules, 1989". You please go through the rules given in the attachment.