| 14 | | Supplemental Agreement for work within scope | $272.0k | 1/14/02 |
| 13 | | Supplemental Agreement for work within scope | $2.7m | 9/27/01 |
| 12 | | Supplemental Agreement for work within scope | $1.2m | 9/25/01 |
| 11 | | Supplemental Agreement for work within scope | $6.4m | 3/21/01 |
| 9 | | Supplemental Agreement for work within scope | $4.2m | 1/18/01 |