By the Govt. . Of India, Dept of Environment and Forest notification dated 27/11/89 the rules known as The Manufacture Storage and Import of Hazardous chemicals Rules 1989 came in to force from 27/11/89. These rules provided definitions of hazardous chemicals, Major Accident, Thresholds quantity etc.

Rule 13 of these rules required on site emergency plan and rule 14 required Preparation of Off Site Emergency Plan by the authority.

As per schedule -5 of these rules, Dist, Cokkectors were declared as authority for preparation of off site emergency plan under rule - 14. Schedule 11 of above rules prescribed details of on-site emergency plan and Schedule 12 prescribed the details of Off Site Emergency Plan.