The government and public environmental management must act as a mediator in conflicts between private and social interests. But in addition to this function, government must also eliminate or minimize the environmental impacts and damage that result from the planning, implementation, and operation of its own activities. To illustrate these two approaches to public environmental management, this book presents an analysis of the tools available to implement public environmental policies and a tool for environmental management by the members of the public administration itself, called the Public Administration's Environmental Agenda (A3P).