"This technical report describes the details of the modeling and risk characterization of the possible chemical warfare agent exposure resulting from the demolition at the Khamisiyah Pit following the cease fire for the Gulf War of 1991. The Department used the hazard areas predicted by each combination of an ensemble of models to predict possible exposure. The Department sent letters to approximately 99,000 veterans in 1997 and to 101,000 in 2000, advising them that they were possibly exposed to low-levels of chemical warfare agents. It is important to note that the modeling process is based on computer simulations and, although based on best science at the time, still carry some uncertainties." -- P. [1].

"April 16, 2002."