Specific legal requirements e.g. national laws, standards, international agreements and conventions, relevant policies etc.
Public views and complaints
Threat to sensitive ecosystems and resources e.g. can lead to extinction of species and depletion of resources, which can result, into conflicts.
Geographical extent of the impact e.g. has trans- boundary implications.
Cost of mitigation
Duration (time period over which they will occur)
Likelihood or probability of occurrence (very likely, unlikely, etc.)
Reversibility of impact (natural recovery or aided by human intervention)
Number (and characteristics) of people likely to be affected and their locations
Cumulative impacts e.g. adding more impacts to existing ones.
Uncertainty in prediction due to lack of accurate data or complex systems. Precautionary principle is advocated in this scenario.