Name of Company | Contact | City | State | Phone |
| AIM Environmental Consulting | Harold Nagel | Kearney | NE | 308-234-1749 |
| American Engineering Testing, Inc. | Brad Palmer | Pierre | SD | 605-224-9535 |
| American Engineering Testing, Inc. | Robert Temme | Rapid City | SD | 605-388-0029 |
| ANLAB Environmental | Bobby E. Henderson | Kansas City | MO | 819-421-0451 |
| AquAeTer, Inc. | Steve Wampler | Englewood | CO | 303-771-9150 |
| Aquaterra Environmental Solutions, Inc. | Mike Miller | Omaha | NE | 402-884-6202 |
| ATC Associates, Inc. | David Christensen | Omaha | NE | 402-697-9747 |
| Baker & Associates | John Baker | Scottsbluff | NE | 308-632-3123 |
| Barker, Lemar & Associates, Inc. | Mike Barker | Des Moines | IA | 515-256-8814 |
| Bay West, Inc. | Phil Dula | Lenexa | KS | 913-663-2915 |
| BE&K/Terranext | Steve Peck | Lakewood | CO | 303-914-1700 |
| Billings & Associates, Inc. | Brad Billings | Albuquerque | NM | 505-345-1116 |
| Burns & McDonnell | Jim Foil | Kansas City | MO | 816-822-3180 |
| Clayton Group Services, Inc. | Monte M. Nienkerk | Downers Grove | IL | 630-795-3200 |
| 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 |
| EA Engineering, Science & Technology | H. Lee Becker | Lincoln | NE | 402-476-3766 |
| Earthsource Consulting | Dr. Sanford S. Kaplan | Lincoln | NE | 402-785-3213 |
| Ecology & Environmental, Inc. | John Caoile | Overland Park | KS | 913-432-9961 |
| Eisenbraun & Associates | Todd Van Maanen | Yankton | SD | 605-665-8092 |
| Eneco Tech | John Lynch | Denver | CO | 303-861-2200 |
| Enviro Service | Marty McCafferty | Scottsbluff | NE | 308-632-3933 |
| Enviro Tech Services, Inc. | Jack Eslick | Salina | KS | 785-827-1682 |
| Environmental Professionals, Inc. | Paul Ziemba | Omaha | NE | 402-891-1112 |
| Fox Engineering Associates | David Fox | Ames | IA | 515-233-0000 |
| Franklin Associates/McLaren/Hart, Inc. | David E. Brewer | Prairie Village | KS | 913-649-2225 |
| Geotechnical Services, Inc. | Fred Jones | Grand Island | NE | 308-381-1987 |
| Geotechnical Services, Inc. | Mel Cerny | Lincoln | NE | 402-466-8154 |
| 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 |
| Harding ESE | Tom Colwell | Lincoln | NE | 402-421-7755 |
| HDR Engineering | Tim Crockett | Omaha | NE | 402-399-1257 |
| Heartland Environmental & Safety Consulting Services, Ltd. | David C. VanDyke | Stanley | KS | 913-681-6882 |
| Hollingsworth Associates, Inc. | Harold Hollingsworth | Sheridan | CO | 303-781-5188 |
| Howard Green Company | Michael G. Fisher | Cedar Rapids | IA | |
| 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 |
| IT Corporation | Doug Trail | Urbandale | IA | 515-252-0234 |
| Jacobson Satchell Consultants | Dale Jacobson | Omaha | NE | 402-697-0701 |
| Jensen Well Co. | Dave Johnson | Blair | NE | 402-426-2585 |
| Layne Western, division of Layne Christensen | Tom Correll | Valley | NE | 402-359-2042 |
| Leggette, Brashears & Graham, Inc. | Robert M. Rohlfs | Liberty | MO | 816-421-7766 |
| Leggette, Brashears & Graham, Inc. | Tim Kenyon | Sioux Falls | SD | 605-344-6000 |
| Lenz Environmental, Inc. | Brian Lenz | West Des Moines | IA | 515-221-3993 |
| Liehs Drilling | Wes Liehs | Lexington | NE | 308-324-2303 |
| Liesch Associates, Inc. | Ken Olson | Plymouth | MN | 612-559-1423 |
| Lockwood, Andrews & Newnam, Inc. | Gary A. Norton | Omaha | NE | 402-393-1100 |
| M.C. Schaff & Associates, Inc. | M.C. Schaff | Scottsbluff | NE | 308-635-1926 |
| Marc Enviro Services, Inc. | Mark Schafer | Omaha | NE | 402-492-8025 |
| Maxim Technologies | Clarke Knigge | 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 |
| Montgomery Watson | Michael Geringer | Des Moines | IA | 515-253-0830 |
| Olsson Associates | Bill Stoner | Lincoln | NE | 402-474-6311 |
| Olsson Associates | Mike Milius | Holdrege | NE | 308-995-8706 |
| Olsson Environmental Sciences, Inc. | Jeffrey S. Johnson | Lincoln | NE | 402-474-6320 |
| 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 |
| Pinnacle Engineering, Inc. | Steve Schleicher | Rochester | MN | 507-280-5966 |
| Powers Elevation Company | Jan Watson | Aurora | CO | 303-321-2217 |
| PSA Environmental | Roger R. Sense | Lee Summit | MO | 816-525-7483 |
| RDG Geoscience & Engineering, Inc. | Bob Kalinski | Omaha | NE | 402-894-2678 |
| Roy F. Weston, Inc. | Ben Noller | Lakewood | CO | 303-980-6800 |
| Safety-Kleen Consulting, Inc. | Mark Gallup | Boulder | CO | 303-938-5565 |
| Servi-Tech Laboratory | Fred Vocasek | Dodge City | KS | 316-227-7509 |
| SOLSTICE CO | Jay Baier | Huxley | IA | 515-291-4221 |
| Stanley Environmental, Inc. | Mick Durham | Coralville | IA | 319-626-3990 |
| Steffen Engineering & Testing, Inc. | Jerry Steffen | Sioux City | IA | 712-277-3017 |
| Sverdrup Civil, Inc. | Mike Hill | Overland Park | KS | 913-663-2101 |
| 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 |
| Thiele Geotech, Inc. | Michael Gerdes | Omaha | NE | 402-556-2171 |
| Thompson, Dreessen & Dorner | Arthur D. Beccard | Omaha | NE | 402-330-8860 |
| URS Corporation | Christie Kampschneider | Omaha | NE | 402-334-8181 |
| URS Corporation | Wayne Smith | Shawnee Mission | KS | 913-344-1000 |