All Air Force installations in the Installation Restoration Program (IRP) are in the process of planning and executing environmental restoration activities in response to releases of hazardous substances, pollutants, contaminants, or hazardous solid wastes. Similarly, in response to Federal and State laws, all installations have initiated environmental compliance programs and activities. A variety of plans and regulatory agreements are in effect; these are integral to restoration and compliance activities and serve to govern the scope and timing of multiple investigations and associated decision-making at an installation. Collectively, these management-oriented documents from the basis for development of an Environmental Restoration Program Management Action Plan, referred to in this Guidebook as 'MAP' or 'Action Plan'