2012 Annual Report 1a.Objectives (from AD-416): To develop lidar instrumentation to measure fence-line concentrations from large area emission sources produced by military activities on DoD installations. 1b.Approach (from AD-416): The objective will be achieved through a comprehensive set of tasks that are designed to measure incoming and outgoing PM at the installation fence-line. 3.Progress Report: This research project is to address Department of Defense concerns about air quality impacts both on and off their installations due to off-road military trafficking during training exercises. Tasks accomplished relate primarily to the design and development of CELiS (Compact Eye-safe Lidar System), which is to be used for fence-line monitoring of regulated particulate matter suspended in the atmosphere. This system, if fully realized will allow the military to determine if their off-road trafficking activities are negatively impacting air quality near the installation. The principle parameters for CELiS have been determined for fence-line monitoring activities. Off-the-shelf possible solutions have been evaluated and all were rejected for a variety of reasons. The basic design of CELiS has been completed. Currently, the Energy Dynamics Laboratory is in the process of procuring components to build a prototype for testing.