This document defines terms and outlines the key components of an environmental management system (EMS) as specified by the ISO 14001 standard. The EMS framework includes establishing context, leadership and commitment, planning actions to manage risks and achieve objectives, supporting the system, operating procedures, evaluating performance, and driving continual improvement. Key elements are defining policy, objectives, roles and responsibilities, competencies, communication, documentation, monitoring, measurement, audits and management reviews to guide environmental performance.