Abramson, Lee W. (Parsons, Brinckerhoff, Quade & Douglas, San Francisco, California), Lee, Thomas S. (Parsons, Brinckerhoff, Quade & Douglas, San Francisco, California), Sharma, Sunil (University of Idaho, Moscow), Boyce, Glenn M. (Parsons, Brinckerhoff, Quade & Douglas, San Francisco, California)