| Michael Baker International, Inc. | 19 | $87,000 | $79,714 – $92,177 |
| AECOM Technical Services, Inc. | 12 | $79,268 | $76,244 – $84,129 |
| Bowman Consulting Group, Ltd. | 8 | $68,977 | $66,000 – $76,220 |
| Crawford, Murphy & Tilly, Inc. | 7 | $75,553 | $73,874 – $77,512 |
| DLZ Corporation | 5 | $63,000 | $63,000 – $71,000 |
| JPC Logistics LLC | 4 | $65,853 | $65,853 – $68,037 |
| TranSystems Corporation | 4 | $76,212 | $74,381 – $78,864 |
| APS Consulting, Inc. | 4 | $72,540 | $70,351 – $79,170 |
| Baker Ingram & Associates Inc | 3 | $76,000 | $72,750 – $77,500 |
| Infrastructure Engineering Inc. | 3 | $94,186 | $91,124 – $100,967 |
| ABCD Construction Corporation | 2 | $81,250 | $81,250 – $81,250 |
| City of Philadelphia | 2 | $74,060 | $74,060 – $74,060 |
| C. V. Associates Ny; Pe, LS, P.C. | 2 | $76,960 | $76,960 – $76,960 |
| Freeport-McMoRan Safford Inc. | 2 | $95,800 | $90,700 – $100,900 |
| Freeport-McMoRan Morenci Inc. | 2 | $96,450 | $91,925 – $100,975 |
| City of Dover | 1 | $64,979 | $64,979 – $64,979 |
| A2N Engineering Group, PLLC | 1 | $75,500 | $75,500 – $75,500 |
| Freeport-McMoRan Bagdad Inc. | 1 | $85,000 | $85,000 – $85,000 |
| Fleis & VandenBrink Engineering, Inc. | 1 | $74,500 | $74,500 – $74,500 |
| Freeport Minerals Corporation | 1 | $105,400 | $105,400 – $105,400 |
| Freeport-McMoRan Tyrone Mining LLC | 1 | $106,000 | $106,000 – $106,000 |
| Jefferson Science Associates, LLC | 1 | $100,340 | $100,340 – $100,340 |
| GeoTest, Inc. | 1 | $65,000 | $65,000 – $65,000 |
| Future Construction Corp | 1 | $75,000 | $75,000 – $75,000 |
| KLJ Engineering LLC | 1 | $72,500 | $72,500 – $72,500 |
| Mesabi Metallics Company LLC | 1 | $72,000 | $72,000 – $72,000 |
| MS Engineers P.C. | 1 | $74,880 | $74,880 – $74,880 |
| Popli Architecture Plus Engineering & L.S., D.P.C. | 1 | $107,120 | $107,120 – $107,120 |
| TRC Engineers, Inc. | 1 | $73,008 | $73,008 – $73,008 |