I will continue to post from time to time on modeling issues. But perhaps the key issue at this time is WHICH MODEL? One of the oldest and best known is CAMEO and its use in response to unintentional releases of over 6,000 chemical subtances was enhanced by the work done by NOAA and reflected at URL:
Interesting this is a NOAA site since EPA developed CAMEO and has the lead on chemical hazard responses and safety including co-chairing the National Contingency Plan found at 40 CFR Part 300. That was last revised in 1994 under a statutory mandate to do so. By the way New Gingrich candidate for President in 2012 has announced he beleived EPA should be defunded and abolished. WOW!
At any rate the Senate Committee on Homeland Security and Governmental Affairs in a losing effort to enact legislation in the 111th Congress did start to address necessary oversight of atmospheric modeling issues and discussed them in its Report No. 111-377 issued December 17, 2010 at pp 43-44.
A reliable person at the American Meterology Association informs me that CDC has gotten the bit in its teeth on the plume modeling issue and will be doing some important work finding out exactly what the agencies are up to and what the problems are in fact.
The URL for the Senate Report is as follows: