B486.3.pdf

This is a Utility Site Layout technical drawing for Dobbins Air Reserve Base (ARB), dated 2025. The image shows a detailed aerial view of a specific utility area with annotations indicating two key infrastructure modifications: an "Existing Return Duct to be Removed" and an "Existing Supply Duct Penetration". The drawing includes a small inset satellite map showing the base's location, and uses the WGS 1984 UTM Zone 16N coordinate system. The scale is provided in both feet and meters, with a north arrow indicating orientation. Two military unit insignias are displayed, suggesting this is an official military engineering or renovation planning document for the base's utility infrastructure.