Richard Denison, Ph.D., is a Senior Scientist.
It probably goes without saying that EDF welcomes EPA's decision to suspend the development and posting of risk-based prioritizations under its Chemical Assessment and Mangement Program (ChAMP). EDF has been arguing (see our earlier posts) that ChAMP's "rush to risk" has taken EPA badly off-track. But we have also identified many useful things that EPA's existing chemicals program can and should be doing with the data it obtained through the HPV Challenge (whether called ChAMP or not) .
We look forward to working with EPA to craft a new approach, grounded in a return to developing scientifically defensible hazard, not risk, characterizations and transparently identifying and addressing data gaps and data quality problems.