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-2023 | A | Nov-2019 | C | 1 | Administrative Change: Preparing Activity changed from NASA to USACE |
| Nov-2019 | N | Nov-2019 | R | Tri-Annual Database Maintenance (TADM) which consists of updating of Section Format, imperative language and formatting review, and verification of all reports and spelling. | |
| Nov-2019 | N | Nov-2019 | R | Tri-Annual Database Maintenance (TADM) completed | |
| May-2009 | N | May-2009 | N | New section |
