Hazardous Materials Transportation Environmental Consequence Model: Verification and Validation Document Schaeffer, D.J., C.W. Werth, C.P.L. Barkan, H. Yoon and N. Hridaya. 2008. Hazardous Materials Transportation Environmental Consequence Model: Verification and Validation Document. Railroad Engineering Program, University of Illinois at Urbana-Champaign (for the Association of American Railroads), Urbana, IL. Files We're sorry. At this time, we do not have a full text copy of this text available. Categories Safety and Risk