This guideline applies to the application of airflow and contaminant modeling for analyses of indoor air quality@ thermal comfort@ energy@ and events related to chemical@ biological@ and radiological agents. This guideline only applies to modeling efforts using multizone network models@ computational fluid dynamics (CFD)@ or combinations of the two. PURPOSE This guideline establishes a method and format for documenting inputs@ assumptions@ methods@ and outputs utilized when conducting indoor-airflow and contaminant-transport modeling studies.