UFGS 31 21 13 Radon Mitigation  

History: Below is a listing of the Revisions and Changes made to this UFGS.

KEY PREPARING ACTIVITY (PA) A Army N Navy F Air Force S NASA
ACTION N New R Revision C Change D Deletion
Release PA Action Change # Nature of Change or Revision
Nov-2018 N R

Periodic update.

Aug-2011 N R

Modified references in subpart 2.2