| # | Company name | Role | # of Projects |
|---|---|---|---|
| 1 | AA Gonzalez Consulting Engineer | engineering company | 3 |
| 2 | Abb Randall Engineers/contractors | engineering company | 0 |
| 3 | AC Ingénierie Lorraine | engineering company | 1 |
| 4 | Action Engineering Consultants | engineering company | 1 |
| 5 | Action Geotechnical Consultants | engineering company | 0 |
| 6 | Adler Development | engineering company | 0 |
| 7 | Adler Engineering Inc | engineering company | 1 |
| 8 | Advanced Storage Technology - Ast | engineering company | 1 |
| 9 | A E Associates Inc. | engineering company | 4 |
| 10 | Affiliated Engineers | engineering company | 1 |
| 11 | Agra Earth And Environmental Inc. | engineering company | 2 |
| 12 | Agra Earth Environmental Soil Engineer | engineering company | 0 |
| 13 | Alan Kropp And Associates | engineering company | 2 |
| 14 | Alan R Schwartz | engineering company | 1 |
| 15 | Albert B Cook | engineering company | 1 |
| 16 | Al Bliss Engineering Inc | engineering company | 1 |
| 17 | Alliance Engineering | engineering company | 2 |
| 18 | Alliance Land Plan & Eng. | engineering company | 2 |
| 19 | Allied Engineering | engineering company | 7 |
| 20 | Allwest Geoscience | engineering company | 1 |