In this chapter, the authors select a sample of Environmental Impact Statement (EISs) for auditing forecasts, and know whether the projects proposed by the EISs were actually implemented as planned. They provide a unique study of implementation, in part replicating previous research. At least since Jeffrey Pressman and Aaron Wildavsky's classic analysis of the Economic Development Administration's program to create jobs in Oakland, California, public policy scholars have endeavored to understand the critical phase of the policy process known as implementation. Implementation entails putting policy theory into policy practice. The selection of the implementation study sample began with a computer-generated random drawing from the EISs catalogued in the Environmental Protection Agency's index of EISs. The coding scheme for the telephone survey and written questionnaire provided an open-ended approach for identifying reasons for implementation difficulty. Political or legal implementation pathologies are manifestations of direct opposition to projects from external sources.