Imagine that an environmental regulatory body is in the process of attempting to decide on the level of a toxic substance that can be safely released into an estuary that provides shelter and food for a variety of birds, fish and other animals. This estuary is also located in a very close proximity to a city with a population of about 150,000.

(a) Given the above hypothetical scenario, explain what specific factors (information) the environmental regulatory body needs to consider in order to evaluate the permissible level of toxic waste to be discharged into the estuary using a standard risk assessment strategy.

(b) What additional information is needed if risk management is going to be an integral part of the final risk analysis of the environmental regulatory body? Be specific.