Enhancing the chemical mixture methodology in emergency preparedness and consequence assessment analysis.

Emergency preparedness personnel at U.S. Department of Energy (DOE) facilities use the chemical mixture methodology (CMM) to estimate the potential health impacts to workers and the public from the unintended airborne release of chemical mixtures.

The development and application of the chemical mixture methodology in analysis of potential health impacts from airborne release in emergencies.

The Chemical Mixture Methodology (CMM) is used for emergency response and safety planning by the US Department of Energy, its contractors and other private and public sector organizations. The CMM estimates potential health impacts on individuals and their ability to take protective actions as a result of exposure to airborne chemical mixtures. It is based on the concentration of each chemical in the mixture at a designated receptor location, the protective action criteria (PAC) providing chemical-specific exposure limit values and the health code numbers (HCNs) that identify the target organ groupings that may be impacted by exposure to each chemical in a mixture.