It is an installation classified for the protection of the environment. It is in a fixed place and its operations present risks for the environment. A specific regulation applies to these installations and the DREAL is the government organisation which makes sure the regulation is observed.

It is an international standard governing requirements concerning environmental management.

It is voluntary. The company that complies with the current regulations will set itself new targets to improve how it operates everyday in environmental terms. If a company complies with current regulations, it will set new targets for improving its environmental performance on a daily basis.

An accredited external organisation such as AFAQ AFNOR. It will perform audits every year to check the compliance and effectiveness of the environmental management system.