Name of Company | Contact | City | State | Phone |
| American Engineering Testing, Inc. | Brad Palmer | Pierre | SD | 605-224-9535 |
| Amethyst Group, Inc. | Keri Luly | Springfield | IL | 217-544-9790 |
| APC Engineering | Alan P. Church | Platte | SD | 605-337-2641 |
| SCS Aquaterra | Mike Miller | Omaha | NE | 402-884-6202 |
| B.G. Consultants, Inc. | Thomas Bennett | Manhattan | KS | 785-537-7448 |
| Baker & Associates | John Baker | Scottsbluff | NE | 308-632-3123 |
| Barker, Lemar & Associates, Inc. | Mike Barker | Des Moines | IA | 515-256-8814 |
| Bartlett & West Engineers, Inc. | Galen S. Lay | St. Joseph | MO | 816-634-3551 |
| Baseline Engineering | Cooper Best | Golden | CO | 303-940-9966 |
| Bolton & Menk, Inc. | Bill McAllister | Liberty | MO | 816-792-5100 |
| Burns & McDonnell | Jim Foil | Kansas City | MO | 816-822-3180 |
| CH2M Hill | Bob Sink | Omaha | NE | 402-341-1258 |
| Conestoga-Rovers & Associates | Neil Leipzig | Omaha | NE | 402-778-4804 |
| Coranco Great Plains, Inc. | Dan Blankenau | Wahoo | NE | 402-443-4340 |
| EA Engineering, Science & Technology | H. Lee Becker | Lincoln | NE | 402-476-3766 |
| Earth Sound, Inc. | Jim Kenny | McCook | NE | 308-345-7681 |
| Earthsource Consulting | Dr. Sanford S. Kaplan | Lincoln | NE | 402-785-3213 |
| Eisenbraun & Associates | Todd Van Maanen | Yankton | SD | 605-665-8092 |
| Engineering Design Consultants, LLC | Christopher Langan | Omaha | NE | 402-614-0434 |
| Environmental Professionals, Inc. | Paul Ziemba | Omaha | NE | 402-891-1112 |
| The Flatwater Group, Inc. | Tom Riley | Lincoln | NE | 402-435-5441 |
| Franklin Associates/McLaren/Hart, Inc. | David E. Brewer | Prairie Village | KS | 913-649-2225 |
| General Excavating | Mike Stewart | Lincoln | NE | 402-467-1627 |
| Golder Associates, Inc. | Dean Rector | Lakewood | CO | 800-235-7784 |
| Hanson Professional Services, Inc. | Curt Krueger | Kansas City | MO | 816-701-3102 |
| HDR Engineering | Tim Crockett | Omaha | NE | 402-399-1257 |
| Inberg-Miller Engineers | Lawrence Wright | Cheyenne | WY | 307-635-6827 |
| Jacobson Satchell Consultants | Dale Jacobson | Omaha | NE | 402-697-0701 |
| JES Environmental Services, Inc. | Jack Sukovaty | Lincoln | NE | 402-423-8054 |
| Kirkham Michael | Johnna Roberts | Omaha | NE | 402-255-3827 |
| Kirkham Michael | Scott Rathjen | York | NE | 402-362-7117 |
| Layne Western, division of Layne Christensen | Tom Correll | Valley | NE | 402-359-2042 |
| Lenz Environmental, Inc. | Brian Lenz | West Des Moines | IA | 515-221-3993 |
| Midwest Livestock Systems, Inc. | Dennis Boesiger | Beatrice | NE | 402-223-5281 |
| MILCO Environmental Services, Inc. | Chris A. Miller | Kearney | NE | 308-237-5923 |
| Miller & Associates | Reed Miller | Kearney | NE | 308-234-6456 |
| Miller & Associates | Chris Miller | McCook | NE | 308-345-3710 |
| Nebraska Air Quality Specialties, LLC | Piyush Srivastav | Garland | NE | 402-310-5321 |
| Nebraska MEP, NBDC | Richard Yoder | Lincoln | NE | 402-472-1183 |
| Olsson Associates | Ryan Nelson | Grand Island | NE | 308-384-8750 |
| Olsson Associates | John Olsson | Lincoln | NE | 402-474-6311 |
| Olsson Associates | Lou Lamberty | Omaha | NE | 402-341-1116 |
| Olsson Environmental Sciences, Inc. | Jeffrey S. Johnson | Lincoln | NE | 402-474-6320 |
| Pollution Prevention International, Inc. | Bahman Rohanizadeh | Irvine | CA | 949-757-2690 |
| Rocky Mountain Pump Service, Inc. | David Weinert | Scottsbluff | NE | 308-632-5545 |
| Ross Engineering, Inc. | Amanda Ross-Hoffer | Lincoln | NE | 402-474-7677 |
| Snyder Engineering | Richard Snyder | Columbus | NE | 402-563-2236 |
| Tagge Engineering Consultants | Dana Peterson | Holdrege | NE | 308-995-6677 |
| Terracon | David M. Svingen | Omaha | NE | 402-330-2202 |
| Tetra Tech, Inc. | Derek Dickinson | North Platte | NE | 308-534-5131 |
| The Schemmer Associates, Inc. | Barry Boyd | Omaha | NE | 402-493-4800 |
| The Shipley Group | Sid Allen | Woods Cross | UT | 801-298-7800 |
| TriState Environmental Services | Mark O'Harrow | Sioux City | IA | 712-276-2854 |
| W. Design Associates | Steven W. Wolford | Hastings | NE | 402-463-2377 |
| W. Design Associates | Greg Wolford | McCook | NE | 308-345-2370 |
| W. Design Associates | Ed Rieker | North Platte | NE | 308-534-9211 |
| WLA Consulting, Inc. | Brian Mulinix | Lincoln | NE | 402-475-8588 |
| WLA Consulting, Inc. | Fred Scarpello | Omaha | NE | 402-991-5833 |