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 |
|---|---|---|---|---|---|
| Aug-2023 | A | Aug-2020 | C | 1 | Incorporated various CCRs |
| Aug-2020 | A | Aug-2020 | R | Complete review and update. | |
| May-2019 | A | May-2014 | C | 3 | Updated list of allowable materials in paragraph 2.2 in response to CCR 6444, CCR 6719, and CCR 7165. |
| Feb-2019 | A | May-2014 | C | 2 | Updated Hydroelectric Design Center (HDC) phone number and ER reference in response to CCR 7048. |
| May-2018 | A | May-2014 | C | 1 | Incorporated changes in response to CCR 4572. |
| May-2014 | A | May-2014 | N | New UFGS section |
