Name of Company | Contact | City | State | Phone |
| AIM Environmental Consulting | Harold Nagel | Kearney | NE | 308-234-1749 |
| Air Resource Specialists, Inc. | Howard Gebhart | Fort Collins | CO | 970-484-7941 |
| American Engineering Testing, Inc. | Brad Palmer | Pierre | SD | 605-224-9535 |
| Amethyst Group, Inc. | Keri Luly | Springfield | IL | 217-544-9790 |
| SCS Aquaterra | Mike Miller | Omaha | NE | 402-884-6202 |
| ATC Associates, Inc. | Dave Christensen | Omaha | NE | 800-873-5532 |
| Barker, Lemar & Associates, Inc. | Mike Barker | Des Moines | IA | 515-256-8814 |
| Bartlett & West Engineers, Inc. | Galen S. Lay | St. Joseph | MO | 816-364-3551 |
| BE&K/Terranext | Steve Peck | Lakewood | CO | 303-914-1700 |
| B.E.S.T., Inc. | J.W. Ennis | Lincoln | NE | 402-483-1069 |
| Bolton & Menk, Inc. | Bill McAllister | Liberty | MO | 816-792-5100 |
| Burns & McDonnell | Jim Foil | Kansas City | MO | 816-822-3180 |
| Cascade Earth Sciences | Jonathan Paetz | Valley | NE | 402-359-6008 |
| CH2M Hill | Bob Sink | Omaha | NE | 402-341-1258 |
| Conestoga-Rovers & Associates | Neil Leipzig | Omaha | NE | 402-778-4804 |
| EA Engineering, Science & Technology | H. Lee Becker | Lincoln | NE | 402-476-3766 |
| Earthsource Consulting | Dr. Sanford S. Kaplan | Lincoln | NE | 402-785-3213 |
| Engineering Design Consultants, LLC | Christopher Langan | Omaha | NE | 402-614-0434 |
| The Flatwater Group | Tom Riley | Lincoln | NE | 402-435-5441 |
| Fox Engineering Associates | David Fox | Ames | IA | 515-233-0000 |
| Franklin Associates/McLaren/Hart, Inc. | David E. Brewer | Prairie Village | KS | 913-649-2225 |
| Geologic Solutions | James Kearney | Lincoln | NE | 402-489-2754 |
| Geotechnical Services, Inc. | William Arneson | Lincoln | NE | 402-466-8154 |
| Geotechnical Services, Inc. | Brian Norton | Omaha | NE | 402-339-6104 |
| GeoTek Engineering & Testing | Mike Meyer | Sioux Falls | SD | 605-335-5512 |
| Gershman, Brickner & Bratton, Inc. | Harvey Gershman | Fairfax | VA | 703-573-5800 |
| Golder Associates, Inc. | Dean Rector | Lakewood | CO | 800-235-7784 |
| HDR Engineering | Tim Crockett | Omaha | NE | 402-399-1257 |
| Inberg-Miller Engineers | Lawrence Wright | Cheyenne | WY | 307-635-6827 |
| Institute for Environmental Research & Education | Rita Schenck | Vashon | WA | 206-463-7430 |
| IT Corporation | Doug Trail | Urbandale | IA | 515-252-0234 |
| Jacobson Satchell Consultants | Dale Jacobson | Omaha | NE | 402-697-0701 |
| Kirkham Michael Consulting Engineers | Rich Robinson | Omaha | NE | 402-255-3840 |
| Kirkham Michael | Scott Rathjen | York | NE | 402-362-7117 |
| Labat-Anderson, Inc. | Sheri Rivera | Bellevue | NE | 402-291-2362 |
| Leggette, Brashears & Graham, Inc. | Scott Cumming | Kansas City | MO | 816-421-7766 |
| Lenz Environmental, Inc. | Brian Lenz | West Des Moines | IA | 515-221-3993 |
| Marc Enviro Services, Inc. | Mark Schafer | Omaha | NE | 402-492-8025 |
| Maxim Technologies | Mitch Kannenberg | Sioux Falls | SD | 605-332-5371 |
| MFG, Inc. | Connie Determan | Omaha | NE | 402-933-1345 |
| Mid West Laboratories | Ken Pohlman | Omaha | NE | 402-334-7770 |
| 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 |
| Nebraska Safety Council, Inc. | Laurie Klosterboer | Lincoln | NE | 402-483-2511 |
| NLK Engineering, Inc. | Norman Klocke | Cedar Rapids | IA | 319-396-3140 |
| Olsson Associates | Ryan Nelson | Grand Island | NE | 308-384-8750 |
| Olsson Associates | John Olsson | Lincoln | NE | 402-474-6311 |
| Olsson Assoicates | Lou Lamberty | Omaha | NE | 402-341-1116 |
| Olsson Environmental Sciences, Inc. | Jeffrey S. Johnson | Lincoln | NE | 402-474-6320 |
| Petroleum Inventory Management | | Augusta | ME | 207-622-4192 |
| Sear-Brown | Greg Woodward | Golden | CO | 303-271-9398 |
| SOLSTICE CO | Jay Baier | Huxley | IA | 515-291-4221 |
| Stanley Consultants, Inc. | Mick Durham | Coralville | IA | 319-626-3990 |
| Tagge Engineering Consultants | Darold Tagge | Holdrege | NE | 308-995-6677 |
| Terracon | David M. Svingen | Omaha | NE | 402-330-2202 |
| Tetra Tech EM Inc. | Kathleen Homer | Lenexa | KS | 913-894-2600 |
| Tetra Tech EM Inc. | Steve Holmes | Lincoln | NE | 402420-6228 |
| 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 | 801-298-7820 |
| Trinity Consultants | Don Gansert | Olathe | KS | 913-390-9700 |
| TriState Environmental Services | Mark O'Harrow | Sioux City | IA | 712-276-2854 |
| URS Corporation | Christie Kampschneider | Omaha | NE | 402-334-8181 |
| U.S Water Services Corp. | Robert Livermore | Sioux City | IA | 866-753-8292 |
| Whitmore Associates | Charles Whitmore | Shawnee Mission | KS | 913-262-8784 |
| WLA Consulting, Inc. | Brian Mulinix | Lincoln | NE | 402-475-8588 |
| WLA Consulting, Inc. | Fred Scarpello | Omaha | NE | 402-991-5833 |