Innovative Retaining Wall System for the Dallas High Five Project William J. Neely, Ph.D., P.E., The Reinforced Earth Company, San Diego, CA Construction of Structural Shoring and Retaining Walls Jesse Beaver, P.E., Washington State Department of Transportation, Olympia, WA The Observational Method and Drilled Shaft Acceptance Criteria Conrad W. Felice, LACHEL FELICE and Associates, Kirkland, WA