Name of Company | Contact | City | State | Phone |
| 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 |
| ANLAB Environmental | Bobby E. Henderson | Kansas City | MO | 819-421-0451 |
| APC Engineering | Alan Church | Platte | SD | 605-337-2641 |
| SCS Aquaterra | Mike Miller | Omaha | NE | 402-884-6202 |
| ATC Associates, Inc. | David Christensen | Omaha | NE | 800-873-5532 |
| 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 | 816-364-3551 |
| 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 |
| Castle Construction Company | Kimberly D. Tate | Columbus | NE | 402-564-5554 |
| CH2M Hill | Bob Sink | Omaha | NE | 402-341-1258 |
| Conestoga-Rovers & Associates | Neil Leipzig | Omaha | NE | 402-778-4804 |
| Custom Environmental Services | Gerry Murt | Arvada | CO | 303-423-9949 |
| DPRA, Inc. | Mary Lou Marino | Manhattan | KS | 913-539-3565 |
| 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 |
| ENSR Corporation | Wayne Lindsay | Ballwin | MO | |
| Environmental Management Resource, Inc. | John Rademacker | Lincoln | NE | 402-441-3022 |
| 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. | Brian Norton | Omaha | NE | 402-339-6104 |
| GeoTek Engineering & Testing | Mike Meyer | Sioux Falls | SD | 605-335-5512 |
| Golder Associates, Inc. | Dean Rector | Lakewood | CO | 800-235-7784 |
| Hanson Professional Services, Inc. | Curt Krueger | Kansas City | MO | 816-701-3102 |
| Haz-Mat Response, Inc. | Jeff Donovan | Olathe | KS | 800-229-5252 |
| HDR Engineering | Tim Crockett | Omaha | NE | 402-399-1257 |
| Heartland Environmental & Safety Consulting Services, Ltd. | David C. VanDyke | Stanley | KS | 913-681-6882 |
| Inberg-Miller Engineers | Lawrence Wright | Cheyenne | WY | 307-635-6827 |
| Institute for Environmental Assessment | David Kluge | Ralston | NE | 402-339-6240 |
| 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 | Johnna Roberts | Omaha | NE | 402-255-3827 |
| Kirkham Michael | Scott Rathjen | York | NE | 402-362-7117 |
| Landscape Butler/Next Phase Environmental, Inc. | Ryan Young | Omaha | NE | 402-510-2754 |
| Liesch Associates, Inc. | Ken Olson | Plymouth | MN | 612-559-1423 |
| 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 |
| 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 | Lou Lamberty | Omaha | NE | 402-341-1116 |
| Olsson Associates | John Olsson | Lincoln | NE | 402-474-6311 |
| Panhandle Geotechnical & Environmental, Inc. | David Weinert | Scottsbluff | NE | 308-632-6735 |
| Petroleum Inventory Management | | Augusta | ME | 207-622-4192 |
| Pollution Prevention International | Azita Yzdani | Irvine | CA | 949-757-2690 |
| Raines & Associates, Inc. | Norm Abbott | Omaha | NE | 402-758-9020 |
| Roy F. Weston, Inc. | Ben Noller | Lakewood | CO | 303-980-6800 |
| Roy F. Weston, Inc. | Rodney Kirch | Vernon Hills | IL | 847-918-4149 |
| Sear-Brown | Greg Woodward | Golden | CO | 303-271-9398 |
| Servi-Tech Laboratory | Fred Vocasek | Dodge City | KS | 316-227-7509 |
| Soil-Tek | Brooke Music | Omaha | NE | 402-397-7474 |
| Solstice Company, Inc. | Jay Baier | Huxley | IA | 515-291-4221 |
| Solstice Company, Inc. | Pete Mackenhaupt | Omaha | NE | 402-730-0367 |
| Stanley Consultants | 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 | 402-420-6228 |
| 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 | 801-298-7800 |
| Trinity Consultants | Don Gansert | Olathe | KS | 913-390-9700 |
| Tri State Environmental Services, Inc. | Mark O'Harrow | Sioux City | IA | 712-276-2854 |
| U.S. Water Services Corp. | Robert Livermore | Sioux City | IA | 866-753-8292 |