Name of Company | Contact | City | State | Phone |
| AIM Environmental Consulting | Harold Nagel | Kearney | NE | 308-234-1749 |
| Aquaterra Environmental Solutions, Inc. | Mike Miller | Omaha | NE | 402-884-6202 |
| ATC Associates, Inc. | David Christensen | Omaha | NE | 402-697-9747 |
| Coranco Great Plains, Inc. | Dan Blankenau | Wahoo | NE | 402-443-4340 |
| CRC & Associates, Inc. | Cheryl R. Cohenour | Tulsa | OK | 918-582-9110 |
| DFW & Associates | D.F. Willsie | Lincoln | NE | 402-483-2868 |
| Ecology & Environmental, Inc. | John Caoile | Overland Park | KS | 913-432-9961 |
| Eneco Tech | John Lynch | Denver | CO | 303-861-2200 |
| ENSR Corporation | Wayne Lindsay | Ballwin | MO | |
| Enviro Service | Marty McCafferty | Scottsbluff | NE | 308-632-3933 |
| Environmental Management Resource, Inc. | John Rademacker | Lincoln | NE | 402-441-3022 |
| Environmental Professionals, Inc. | Paul Ziemba | Omaha | NE | 402-891-1112 |
| Franklin Associates/McLaren/Hart, Inc. | David E. Brewer | Prairie Village | KS | 913-649-2225 |
| Geotechnical Services, Inc. | Mel Cerny | Lincoln | NE | 402-466-8154 |
| Hanson Professional Services, Inc. | Curt Krueger | Kansas City | MO | 816-701-3102 |
| Hollingsworth Associates, Inc. | Harold Hollingsworth | Sheridan | CO | 303-781-5188 |
| HWS Consulting Group, Inc. | Owen Goodenkauf | Lincoln | NE | 800-279-4972 |
| Hydro-Logic, Inc. | Marlene Dulaney | Eudora | KS | 785-542-2518 |
| Inberg-Miller Engineers | Lawrence Wright | Cheyenne | WY | 307-635-6827 |
| Institute for Environmental Assessment | David Kluge | Ralston | NE | 402-339-6240 |
| Jacobson Satchell Consultants | Dale Jacobson | Omaha | NE | 402-697-0701 |
| Liesch Associates, Inc. | Ken Olson | Plymouth | MN | 612-559-1423 |
| Lockwood, Andrews & Newnam, Inc. | Gary A. Norton | Omaha | NE | 402-393-1100 |
| Marc Enviro Services, Inc. | Mark Schafer | Omaha | NE | 402-492-8025 |
| Maxim Technologies | Mitch Kannenberg | Sioux Falls | SD | 605-332-5371 |
| Maxim Technologies, Inc. | Derek Dickinson | North Platte | NE | 308-534-5131 |
| 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 |
| Pace Analytical Services, Inc. | Blane Wood | Lenexa | KS | 913-563-1452 |
| Pace Analytical Services, Inc. | Thomas Halverson | Minneapolis | MN | 612-607-6398 |
| Panhandle Geotechnical & Environmental, Inc. | David Weinert | Scottsbluff | NE | 308-632-6735 |
| Phelps Environmental, Inc. | George Phelps | Elkhorn | NE | 402-289-0813 |
| Safety-Kleen Consulting, Inc. | Mark Gallup | Boulder | CO | 303-938-5565 |
| Servi-Tech Laboratories | Brian Shreve | Hastings | NE | 800-468-5411 |
| Servi-Tech Laboratory | Fred Vocasek | Dodge City | KS | 316-227-7509 |
| Terracon | David M. Svingen | Omaha | NE | 402-330-2202 |
| TestAmerica, Inc. | Mike McGee | Cedar Falls | IA | 800-750-2401 |
| Tetra Tech EM Inc. | Kathleen Homer | Lenexa | KS | 913-894-2600 |