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 [ARCHIVED] |
|---|---|---|---|---|---|
| ACTION | N New | R Revision | C Change | D Deletion |
| Release | PA | Date | Action | Change # | Nature of Change or Revision |
|---|---|---|---|---|---|
| May-2021 | A | May-2021 | R | Complete review and update including section title change. | |
| Feb-2011 | A | Feb-2011 | N | Superseding UFGS 44 42 13.00 10 Air Supply and Diffusion Equipment for Sewage Treatment without revision to comply with MF 2010 |
