Name of Company | Contact | City | State | Phone |
| AEW Engineering, Inc. | Margaret A. Cieslik | Omaha | NE | 402-553-0982 |
| 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 |
| Apex Environmental, Inc. | James Marek | Urbandale | IA | 515-727-8025 |
| 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 |
| 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 |
| BEM Systems, Inc. | Greg Butler | Kansas City | MO | 816-842-7440 |
| Billings & Associates, Inc. | Brad Billings | Albuquerque | NM | 505-345-1116 |
| Burns & McDonnell | Jim Foil | Kansas City | MO | 816-822-3180 |
| CAPE Environmental Management, Inc. | Dezso Linbrunner | Bellevue | NE | 402-291-8533 |
| Castle Construction Company | Kimberly D. Tate | Columbus | NE | 402-564-5554 |
| Clayton Group Services, Inc. | Monte M. Nienkerk | Downers Grove | IL | 630-795-3200 |
| Clayton Group Services, Inc. | Derek Wong | Novi | MI | 248-344-2661 |
| Clean Harbors Environmental Services, Inc. | George Cebula | Denver | CO | 303-388-6300 |
| Conestoga-Rovers & Associates | Neil Leipzig | Omaha | NE | 402-778-4804 |
| Coranco Great Plains, Inc. | Dan Blankenau | Wahoo | NE | 402-443-4340 |
| CRC & Associates, Inc. | Cheryl R. Cohenour | Tulsa | OK | 918-582-9110 |
| Custom Environmental Services | Gerry Murt | Arvada | CO | 303-423-9949 |
| DPRA, Inc. | Mary Lou Marino | Manhattan | KS | 913-539-3565 |
| Delta Consultants | Brent Puck | Bettendorf | IA | 563-355-9785 |
| EA Engineering, Science & Technology | H. Lee Becker | Lincoln | NE | 402-476-3766 |
| Earth Sound, Inc. | Jim Kenny | McCook | NE | 308-345-7681 |
| 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 Professionals, Inc. | Paul Ziemba | Omaha | NE | 402-891-1112 |
| Environmental Solutions, Inc. | John Sempeck | Omaha | NE | 888-908-5700 |
| Evans Environmental Construction | Jeff Evans | Council Bluffs | IA | 712-366-5834 |
| Franklin Associates/McLaren/Hart, Inc. | David E. Brewer | Prairie Village | KS | 913-649-2225 |
| General Excavating | Mike Stewart | Lincoln | NE | 402-467-1627 |
| Geologic Solutions | Jim Kearney | Lincoln | NE | 402-489-2754 |
| Geotechnical Services, Inc. | Fred Jones | Grand Island | NE | 308-381-1987 |
| Geotechnical Services, Inc. | Mel Cerny | 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 |
| 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 |
| Haz-Mat Response, Inc. | Jeff Donovan | Olathe | KS | 800-229-5252 |
| Heartland Environmental & Safety Consulting Services, Ltd. | David C. VanDyke | Stanley | KS | 913-681-6882 |
| Heimes Excavating, Inc. | Joe Giesler | Omaha | NE | 402-894-1000 |
| 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 |
| IT Corporation | Doug Trail | Urbandale | IA | 515-252-0234 |
| Jacobson Satchell Consultants | Dale Jacobson | Omaha | NE | 402-697-0701 |
| JEO Consulting | Tyler Hevlin | Omaha | NE | 402-392-9901 |
| JEO Consulting | Justin Stine | Lincoln | NE | 402-435-3080 |
| John Prouty Construction, Inc. | John Prouty | O'Neill | NE | 402-336-4014 |
| JS Engineering | Jeff Schoeneck | Arlington | NE | 888-805-9845 |
| Kirkham Michael | Johnna Roberts | Omaha | NE | 402-255-3827 |
| Lashley Feedlot Development and Consulting | Bud Lashley | Curtis | NE | 308-367-4336 |
| Leggette, Brashears & Graham, Inc. | Robert M. Rohlfs | Liberty | MO | 816-421-7766 |
| Lenz Environmental, Inc. | Brian Lenz | West Des Moines | IA | 515-221-3993 |
| Liehs Drilling | Wes Liehs | Lexington | NE | 308-324-2303 |
| 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, Inc. | Derek Dickinson | North Platte | NE | 308-534-5131 |
| Midwest Livestock Systems, Inc. | Dennis Boesiger | Beatrice | NE | 402-223-5281 |
| 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 |
| Montgomery Watson | Michael Geringer | Des Moines | IA | 515-253-0830 |
| 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 |
| Panhandle Geotechnical & Environmental, Inc. | David Weinert | Scottsbluff | NE | 308-632-6735 |
| Peterson Drilling, Inc. | Chris Peterson | Riverdale | NE | 308-893-4293 |
| Petroleum Equipment, Inc. | Gary Shovlain | Grand Island | NE | 308-382-8902 |
| Petrotek | Hal Demuth | Littleton | CO | 303-290-9414 |
| Philip Environmental Services | Beverly Roberts | Columbia | IL | 618-281-7173 |
| Pinnacle Engineering, Inc. | Steve Schleicher | Rochester | MN | 507-280-5966 |
| Professional Environmental Solutions | Vaden Hellerich | Valparaiso | NE | 402-817-3942 |
| RDG Geoscience & Engineering, Inc. | Bob Kalinski | Omaha | NE | 402-894-2678 |
| RK & Associates, Inc. | Suresh Relwani | Warrenville | IL | 603-393-9000 |
| Rocky Mountain Pump Service, Inc. | David Weinert | Scottsbluff | NE | 308-632-5545 |
| Roy F. Weston, Inc. | Rodney Kirch | Vernon Hills | IL | 847-918-4149 |
| Roy F. Weston, Inc. | Ben Noller | Lakewood | CO | 303-980-6800 |
| Safety-Kleen Consulting, Inc. | Mark Gallup | Boulder | CO | 303-938-5565 |
| SCS Engineers | David Brewer | Overland Park | KS | 913-451-7510 |
| Seneca Environmental Services, Inc. | Dustin Cruikshank | Omaha | NE | 402-431-0340 |
| Solstice Company, Inc. | Jay Baier | Huxley | IA | 515-291-4221 |
| Solstice Company, Inc. | Pete Mackenhaupt | Omaha | NE | 402-730-0367 |
| Sverdrup Civil, Inc. | Mike Hill | Overland Park | KS | 913-663-2101 |
| TCW Construction, Inc. | Christopher Boe | Lincoln | NE | 402-475-5030 |
| 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 |
| Tetre Tech, Inc. | Derek Dickinson | North Platte | NE | 308-534-5131 |
| Thiele Geotech, Inc. | Michael Gerdes | Omaha | NE | 402-556-2171 |
| 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 |
| West Central Environmental Consultants, Inc. | Gaylen Weisenburger | Morris | MN | 320-589-2039 |
| Yant Equipment | Ronald Arent | Grand Island | NE | 800-658-4334 |