Name of Company | Contact | City | State | Phone |
| AEW Engineering, Inc. | Margaret A. Cieslik | Omaha | NE | 402-553-0982 |
| Air Resource Specialists, Inc. | Howard Gebhart | Fort Collins | CO | 970-484-7941 |
| American Engineering Testing, Inc. | Brad Palmer | Pierre | SD | 605-224-9535 |
| APC Engineering | Alan P. 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 |
| Baker & Associates | John Baker | Scottsbluff | NE | 308-632-3123 |
| Barker, Lemar & Associates, Inc. | Mike Barker | Des Moines | IA | 515-256-8814 |
| 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 |
| 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 |
| Bolton & Menk, Inc. | Bill McAllister | Liberty | MO | 816-792-5100 |
| Brady & Swanson LLC | E. Gene Brady | Grand Island | NE | 308-382-6421 |
| Burns & McDonnell | Jim Foil | Kansas City | MO | 816-822-3180 |
| CAPE Environmental Management, Inc. | Dezso Linbrunner | Bellevue | NE | 402-291-8533 |
| Carollo Engineers, Inc | Larry Elliott | Kansas City | MO | 816-942-4000 |
| 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 |
| CRC & Associates, Inc. | Cheryl R. Cohenour | Tulsa | OK | 918-582-9110 |
| E & A Consulting Group, Inc. | Lance Paulsen | Omaha | NE | 402-895-4700 |
| 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 |
| Ehrhart Griffin & Associates | Robert G. Griffin | Omaha | NE | 402-551-0631 |
| Eisenbraun & Associates | Todd Van Maanen | Yankton | SD | 605-665-8092 |
| Eneco Tech | John Lynch | Denver | CO | 303-861-2200 |
| 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 |
| 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 |
| HWS Consulting Group, Inc. | Owen Goodenkauf | Lincoln | NE | 800-279-4972 |
| Inberg-Miller Engineers | Lawrence Wright | Cheyenne | WY | 307-635-6827 |
| Institute for Environmental Assessment | David Kluge | Ralston | NE | 402-399-6240 |
| IT Corporation | Doug Trail | Urbandale | IA | 515-252-0234 |
| Jacobson Satchell Consultants | Dale Jacobson | Omaha | NE | 402-697-0701 |
| JEO | Kevin Kruse | Lincoln | NE | 402-435-3080 |
| JEO | Mark Augustine | Omaha | NE | 402-392-9923 |
| Kirkham Michael | Johnna Roberts | Omaha | NE | 402-255-3827 |
| Lamp, Rynearson & Associates | Michael P. McMeckin | Omaha | NE | 402-496-2498 |
| Leggette, Brashears & Graham, Inc. | Tim Kenyon | Sioux Falls | SD | 605-334-6000 |
| 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 |
| MACTEC Engineering & Consulting, Inc. | Tom Colwell | Lincoln | NE | 402-421-7755 |
| Maxim Technologies, Inc. | Derek Dickinson | North Platte | NE | 308-534-5131 |
| MFG, Inc. | Connie Determan | Omaha | NE | 402-933-1345 |
| 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 |
| 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 Associates |  | | NE | |
| Panhandle Geotechnical & Environmental, Inc. | David Weinert | Scottsbluff | NE | 308-632-6735 |
| Philip Environmental Services | Beverly Roberts | Columbia | IL | 618-281-7173 |
| 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 |
| 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 |
| Sear-Brown | Greg Woodward | Golden | CO | 303-271-9398 |
| Snyder Engineering | Richard Snyder | Columbus | NE | 402-563-2236 |
| Stanley Consultants, 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 |
| 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 Schemmer Associates, Inc. | Linda Weaver Beacham | Lincoln | NE | 402-488-2500 |
| The Schemmer Associates, Inc. | Barry Boyd | Omaha | NE | 402-493-4800 |
| Thompson, Dreessen & Dorner | Arthur D. Beccard | Omaha | NE | 402-330-8860 |
| TriState Environmental Services | Mark O'Harrow | Sioux City | IA | 712-276-2854 |
| United Engineering | Chris Cain | Elkhorn | NE | 402-763-9475 |
| 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 |
| W. Design Associates | Steven W. Wolford | Hastings | NE | 402-463-2377 |
| W. Design Associates | Greg Wolford | McCook | NE | 308-345-2370 |
| W. Design Associates | Ed Rieker | North Platte | NE | 308-534-9211 |
| 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 |