| 12 | | Supplemental Agreement for work within scope | ($215k) | 9/23/98 |
| 11 | | Supplemental Agreement for work within scope | $66.0k | 9/17/98 |
| 9 | | Supplemental Agreement for work within scope | ($111k) | 7/31/98 |
| 8 | | Supplemental Agreement for work within scope | $68.4k | 7/17/98 |
| 7 | | Supplemental Agreement for work within scope | ($49k) | 6/25/98 |