Name of Company | Contact | City | State | Phone |
| AEW Engineering, Inc. | Margaret A. Cieslik | Omaha | NE | 402-553-0982 |
| 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 |
| APC Engineering | Alan Church | Platte | SD | 605-337-2641 |
| Applied Technology, Inc. | Ron Woods | Fishers | IN | 317-842-0722 |
| AquAeTer, Inc. | Steve Wampler | Englewood | CO | 303-771-9150 |
| Aquaterra Environmental Solutions, Inc. | Mike Miller | Omaha | NE | 402-884-6202 |
| ASW Associates, Inc. | Marshall Prichard | Lincoln | NE | 402-488-3983 |
| Bay West, Inc. | Phil Dula | Lenexa | KS | 913-663-2915 |
| BE&K/Terranext | Steve Peck | Lakewood | CO | 303-914-1700 |
| BEM Systems, Inc. | Greg Butler | Kansas City | MO | 816-842-7440 |
| 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 |
| Clayton Group Services, Inc. | Derek Wong | Novi | MI | 248-344-2661 |
| 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 |
| Earthsource Consulting | Dr. Sanford S. Kaplan | Lincoln | NE | 402-785-3213 |
| Ecology & Environmental, Inc. | John Caoile | Overland Park | KS | 913-432-9961 |
| Eneco Tech | John Lynch | Denver | CO | 303-861-2200 |
| Engineering Solutions & Design, Inc. | Jack Chappelle | Overland Park | KS | 800-298-1851 |
| ENSR Corporation | Wayne Lindsay | Ballwin | MO | |
| Environmental Professionals, Inc. | Paul Ziemba | Omaha | NE | 402-891-1112 |
| 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 |
| Geotechnical Services, Inc. | Brian Norton | Omaha | NE | 402-339-6104 |
| 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 |
| Howard Green Company | Michael G. Fisher | Cedar Rapids | IA | |
| Huff & Huff, Inc. | | Lagrange | IL | |
| HWS Consulting Group, Inc. | Owen Goodenkauf | Lincoln | NE | 800-279-4972 |
| Hydro-Logic, Inc. | Marlene Dulaney | Eudora | KS | 785-542-2518 |
| 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 |
| Kirkham Michael | Johnna Roberts | Omaha | NE | 402-255-3827 |
| Liesch Associates, Inc. | Ken Olson | Plymouth | MN | 612-559-1423 |
| MACTEC Engineering & Consulting, Inc. | Tom Colwell | Lincoln | NE | 402-421-7755 |
| Marc Enviro Services, Inc. | Mark Schafer | Omaha | NE | 402-492-8025 |
| Maxim Technologies, Inc. | Scot Keith | Rapid City | SD | 605-348-5850 |
| 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 |
| 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 |
| Natural Resource Group, LLC | Todd Potas | Minneapolis | MN | 612-347-6789 |
| 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 |  | | NE | |
| Panhandle Geotechnical & Environmental, Inc. | David Weinert | Scottsbluff | NE | 308-632-6735 |
| Pinnacle Engineering, Inc. | Steve Schleicher | Rochester | MN | 507-280-5966 |
| Pollution Prevention International | Azita Yzdani | Irvine | CA | 949-757-2690 |
| RDG Geoscience & Engineering, Inc. | Bob Kalinski | Omaha | NE | 402-894-2678 |
| RD Todd & Associates | Robert Todd | Eagle | NE | 402-781-2936 |
| Rocky Mountain Pump Service, Inc. | David Weinert | Scottsbluff | NE | 308-632-5545 |
| 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 |
| SOLSTICE CO | Jay Baier | Huxley | IA | 515-291-4221 |
| Stanley Consultants, Inc. | Mick Durham | Coralville | IA | 319-626-3990 |
| Steigers Corporation | Tom Gibbons | Littleton | CO | 303-799-3633 |
| Sverdrup Civil, Inc. | Mike Hill | Overland Park | KS | 913-663-2101 |
| 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 Shipley Group | Sid Allen | Woods Cross | UT | 801-298-7800 |
| TriState Environmental Services | Mark O'Harrow | Sioux City | IA | 712-276-2854 |
| URS Corporation | Christie Kampschneider | Omaha | NE | 402-334-8181 |
| URS Corporation | Wayne Smith | Overland Park | KS | 913-344-1000 |
| Veenstra & Kimm, Inc. | Terry McCarl | Omaha | NE | 877-241-8001 |
| Veenstra & Kimm, Inc. | Chris Jens | Sergeant Bluff | IA | 877-241-8009 |
| West, Inc. | Greg Johnson | Cheyenne | WY | 307-634-1756 |
| Wilson & Company | Jeri L. Meyer | Salina | KS | 785-827-0433 |
| WLA Consulting, Inc. | Brian Mulinix | Lincoln | NE | 402-475-8588 |
| WLA Consulting, Inc. | Fred Scarpello | Omaha | NE | 402-991-5833 |