Reject precautionary default assumptions in risk assessment
What the document says“Reject precautionary default models and uncertainty factors.”
The chapter says that in the face of uncertainty about links between pollutants and health effects, the agency's reliance on default assumptions such as the low-dose linear non-threshold model bakes orders of magnitude of risk into regulatory inputs. It asks that the agency instead default to less restrictive regulatory outcomes.
What the document actually says“Reject precautionary default models and uncertainty factors.”
Drop the safety-first models used when the facts are unclear.
Sometimes it is unclear how harmful a thing is. The EPA then assumes the worst. The book says that pushes rules too far. It wants a lighter starting point.
No action is recorded against this proposal. That is not evidence that none has been taken. See what the tracker does not yet cover.