This document provides guidance for preparation of Installation Action Plans (IAPs) that outline the total multi-year environmental restoration program for an installation. Action plans present an integrated, coordinated approach to achieving the installation's environmental restoration goals. The plans define all Installation Restoration Program (IRP) requirements, propose a comprehensive approach to conduct investigations and remedial actions, and identify possible removals and interim remedial actions at an installation. The intended audience for this guidance is the installation Remedial Project Manager, their IRP executing Project Managers, and major Army commands (MACOMs).