| Carollo Engineers, Inc. | 27 | $85,593 | $79,817 – $102,054 |
| Langan Engineering and Environmental Services, LLC | 12 | $78,000 | $76,375 – $85,087 |
| WSP USA Inc. | 8 | $95,004 | $86,051 – $125,718 |
| State of Washington Department of Ecology | 5 | $90,000 | $85,000 – $90,000 |
| Infotran Engineers & Architects, P.C. | 4 | $128,960 | $125,377 – $129,220 |
| Distinct Engineering Solutions Inc | 4 | $82,680 | $72,280 – $92,560 |
| MS&K, Inc. | 3 | $69,000 | $69,000 – $69,000 |
| GSI Environmental Inc. | 3 | $84,460 | $84,272 – $85,494 |
| Good Earthkeeping Organization, Inc | 2 | $65,172 | $64,607 – $65,736 |
| Geosyntec Consultants, Inc. | 2 | $102,588 | $100,841 – $104,334 |
| Leaaf Environmental, LLC | 2 | $56,750 | $52,625 – $60,875 |
| Micron Technology, Inc. | 2 | $116,884 | $113,442 – $120,325 |
| Stantec Consulting Services Inc. | 2 | $116,355 | $113,900 – $118,810 |
| Tetra Tech, Inc. | 2 | $97,800 | $96,300 – $99,300 |
| RSK Environmental LLC | 2 | $520,000 | $300,000 – $740,000 |
| Pitingaro & Doetsch Consulting Engineers, P.C. | 2 | $76,336 | $76,336 – $76,336 |
| Decostar Industries Inc. | 1 | $130,000 | $130,000 – $130,000 |
| Datasoft Technologies, Inc | 1 | $90,854 | $90,854 – $90,854 |
| Cwe | 1 | $141,696 | $141,696 – $141,696 |
| CommTank, Inc | 1 | $70,000 | $70,000 – $70,000 |
| Atlas Environmental Lab, Corp. | 1 | $65,915 | $65,915 – $65,915 |
| Bem Systems, Inc. | 1 | $150,000 | $150,000 – $150,000 |
| Aspirova System & Engineering Corporation | 1 | $100,000 | $100,000 – $100,000 |
| Atkore Management LLC | 1 | $80,145 | $80,145 – $80,145 |
| Arcadis U.S., Inc. | 1 | $80,018 | $80,018 – $80,018 |
| Aptim Federal Services LLC | 1 | $74,485 | $74,485 – $74,485 |
| Architecture, Engineering and Land Surveying Northeast, PLLC | 1 | $74,004 | $74,004 – $74,004 |
| Archer Daniels Midland Company | 1 | $83,000 | $83,000 – $83,000 |
| Anchor Homes LLC | 1 | $85,000 | $85,000 – $85,000 |
| Advanced Earth Sciences, Inc. | 1 | $81,000 | $81,000 – $81,000 |
| Entech Engineering, P.C. | 1 | $80,018 | $80,018 – $80,018 |
| Distinct Engineering Solutions, Inc., P.C. in NY & PA | 1 | $87,672 | $87,672 – $87,672 |
| Haley & Aldrich, Inc. | 1 | $75,000 | $75,000 – $75,000 |
| Guardian Environmental Services, Inc. | 1 | $65,250 | $65,250 – $65,250 |
| Granite Innovation, Inc. | 1 | $137,000 | $137,000 – $137,000 |
| Hawai'i Pacific University | 1 | $65,374 | $65,374 – $65,374 |
| ILJIN USA Corporation | 1 | $70,000 | $70,000 – $70,000 |
| Jacobs Engineering Group Inc. | 1 | $87,000 | $87,000 – $87,000 |
| HydroTech Environmental Engineering and Geology, DPC | 1 | $78,000 | $78,000 – $78,000 |
| Howard Midstream Energy Partners, LLC | 1 | $108,962 | $108,962 – $108,962 |
| Formosa Engineering Inc | 1 | $65,999 | $65,999 – $65,999 |
| Fishbeck, Thompson, Carr & Huber, Inc. | 1 | $68,162 | $68,162 – $68,162 |
| Fairbanks Gold Mining, Inc. | 1 | $95,931 | $95,931 – $95,931 |
| GD Copper (U.S.A.), Inc. | 1 | $60,882 | $60,882 – $60,882 |
| Future Foam, Inc. | 1 | $116,730 | $116,730 – $116,730 |
| Eficens Systems Inc | 1 | $120,000 | $120,000 – $120,000 |
| EKI Environment & Water, Inc. | 1 | $102,544 | $102,544 – $102,544 |
| Ellexco LLC | 1 | $104,957 | $104,957 – $104,957 |
| The Mannik & Smith Group, Inc. | 1 | $64,896 | $64,896 – $64,896 |
| M&J Engineering, D.P.C. | 1 | $110,240 | $110,240 – $110,240 |