On January 20th, the President issued an Executive Order on Protecting the Federal Workforce and Requiring Mask-Wearing: https://www.whitehouse.gov/briefing-room/presidential-actions/2021/01/20/executive-order-protecting-the-federal-workforce-and-requiring-mask-wearing
This means that any conservation district employee located in a USDA workspace must now wear a mask throughout their entire time in that space, from when they enter to when they leave.
Additional USDA-wide guidance on a range of COVID topics is expected to be issued in the next few days.