Final answer:
The MEF Headquarters Group (MHG) coordinates air pollution modeling techniques and supports policy decisions.
Step-by-step explanation:
The MEF Headquarters Group (MHG) is responsible for coordinating and providing leadership in air pollution modeling techniques. It serves as a focal point for EPA headquarters staff, regional offices, and state and local environmental agencies.
The MHG works with the EPA's Office of Research and Development (ORD) on the development of new models and techniques related to atmospheric research. Additionally, the MHG conducts modeling analyses to support policy and regulatory decisions made by the EPA's Office of Air Quality Planning and Standards (OAQPS).