The results of a 22-member expert panel on dispersion modeling, which was convened by the National Commission on Air Quality in 1979, are reviewed. The panel affirmed the validity of using models in support of air quality regulations. It also recognized the need to convey some of the uncertainty in modeling and recommended technical details for the commission to consider.

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1USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, 240 W. Prospect St., Ft. Collins, Colo. 80526.

2National Committee on Air Quality, 499 S. Capitol St., S.W., Washington, D.C. 20003.