PURPOSE. This NPG describes NASA's Environmental Management System (EMS). An EMS is a system that (1) incorporates people, procedures, and work practices in a formal structure to ensure that the important environmental impacts of the organization are identified and addressed, (2) promotes continual improvement by periodically evaluating environmental performance, (3) involves all members of the organization as appropriate, and (4) actively involves Senior Management in support of the environmental management program. The purpose of the Agency EMS is to have a single overall Agency approach to managing environmental activities that allows for efficient, prioritized program execution.

This NPG provides overall direction for both NASA-wide EMS documentation and Center-level documentation. NASA-wide documentation, NASA Policy Directive (NPD) and NASA Procedures and Guidelines (NPD), are the minimum EMS performance criteria. Center EMS implementation planning activities will add content to reflect Center-specific needs. This NPG supports the NASA Safety and Health Program, including risk management and loss-prevention priorities.