Name of Company | Contact | City | State | Phone |
| ANLAB Environmental | Bobby E. Henderson | Kansas City | MO | 819-421-0451 |
| APC Engineering | Alan Church | Platte | SD | 605-337-2641 |
| Aquaterra Environmental Solutions, Inc. | Mike Miller | Omaha | NE | 402-884-6202 |
| Bartlett & West Engineers, Inc. | Galen S. Lay | St. Joseph | MO | 816-364-3551 |
| Bartlett & West Engineers, Inc. | Alan Soelter | Topeka | KS | 785-272-2252 |
| Baseline Engineering | Cooper Best | Golden | CO | 303-940-9966 |
| BEM Systems, Inc. | Greg Butler | Kansas City | MO | 816-842-7440 |
| Bolton & Menk, Inc. | Bill McAllister | Liberty | MO | 816-792-5100 |
| Burns & McDonnell | Jim Foil | Kansas City | MO | 816-822-3180 |
| CH2M Hill | Bob Sink | Omaha | NE | 402-341-1258 |
| Conestoga-Rovers & Associates | Neil Leipzig | Omaha | NE | 402-778-4804 |
| DeWild Grant Reckert & Associates Co. | Brian Mastbergen | Sioux City | IA | 712-255-7594 |
| EA Engineering, Science & Technology | H. Lee Becker | Lincoln | NE | 402-476-3766 |
| Eneco Tech | John Lynch | Denver | CO | 303-861-2201 |
| Environmental Professionals, Inc. | Paul Ziemba | Omaha | NE | 402-891-1112 |
| Franklin Associates/McLaren/Hart, Inc. | David E. Brewer | Prairie Village | KS | 913-649-2225 |
| Gilmore & Associates, Inc. | Keith Gilmore | Columbus | NE | 402-564-2807 |
| Hanson Professional Services, Inc. | Curt Krueger | Kansas City | MO | 816-701-3102 |
| HDR Engineering | Tim Crockett | Omaha | NE | 402-399-1257 |
| Howard Green Company | Michael G. Fisher | Cedar Rapids | IA | |
| HWS Consulting Group, Inc. | Owen Goodenkauf | Lincoln | NE | 800-279-4972 |
| 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 |
| Liesch Associates, Inc. | Ken Olson | Plymouth | MN | 612-559-1423 |
| Lockwood, Andrews & Newnam, Inc. | Gary A. Norton | Omaha | NE | 402-393-1100 |
| MACTEC Engineering & Consulting, Inc. | Tom Colwell | Lincoln | NE | 402-421-7755 |
| Marc Enviro Services, Inc. | Mark Schafer | Omaha | NE | 402-492-8025 |
| 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 | Omah | NE | 402-341-1116 |
| Panhandle Geotechnical & Environmental, Inc. | David Weinert | Scottsbluff | NE | 308-632-6735 |
| Pinnacle Engineering, Inc. | Steve Schleicher | Rochester | MN | 507-280-5966 |
| Sear-Brown | Greg Woodward | Golden | CO | 303-271-9398 |
| Sverdrup Civil, Inc. | Mike Hill | Overland Park | KS | 913-663-2101 |
| Tagge Engineering Consultants | Darold Tagge | Holdrege | NE | 308-995-6677 |
| Terracon | David Svingen | Omaha | NE | 402-330-2202 |
| Tetra Tech, Inc. | Derek Dickinson | North Platte | NE | 308-534-5131 |
| TriState Environmental Services | Mark O'Harrow | Sioux City | IA | 712-276-2854 |
| Veenstra & Kimm, Inc. | Chris Jens | Sergeant Bluff | IA | 877-241-8009 |
| 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 |