The Environmental Protection Agency has undertaken an independent review of eight rural diffusion models, two of which were developed by the EPA; the remaining six were submitted to the EPA for approval by outside agencies and consulting firms. In the first phase of the review process, EPA arranged with an outside contractor to calculate and tabulate a uniform set of statistics for the eight models to provide reviewers with a consistent set of measures for evaluating model performance. Under a cooperative agreement with the EPA, the American Meteorological Society conducted the scientific review of the rural diffusion models. Seven independent reviewers evaluated each model using scientific and technical information obtained from User's Guides and the statistical performance data developed for the EPA. This report presents the results of the scientific review as summarized by the AMS Steering Committee, and contains some of the views and recommendations of the AMS Committee based on the review process and the performance evaluations.

"Cooperative agreement no. 810297-01". Project Officer: Kenneth L. Demerjian. "Meteorology and Assessment Division, Environmental Sciences Research Laboratory." "This document has been reviewed in accordance with U.S. Environmental Protection Agency policy and approved for publication. Mention of trade names or commercial products does not constitute endorsement or recommendation for use." "November 1983." Bibliography: p. 37-38 "EPA-600/3-83-108"--Cover.