Helena Corporate Office

3020 Bozeman Ave. (Map | Driving Directions)
Helena, MT 59601
Phone: (406) 443-4150
Fax: (406) 443-4155

Mike Wignot, P.E., President
Bill Thompson, Vice President, Sciences Manager
Michael Oelrich, P.E., Engineering Manager
Robert Anderson, Principal Hydrogeologist
Marta Peters , Accounting Administrator
John Dayton, Information Systems Administrator

Billings Office

5602 Hesper Road (Map | Driving Directions)
Billings, MT 59106
Phone: (406) 656-1172
Fax: (406) 656-8912

Al Hilty, P.G., Principal Hydrogeologist, Manager

Missoula Office

667 East Beckwith (Map | Driving Directions)
Missoula, MT 59801
Phone: (406) 721-8243
Fax: (406) 542-2619

Doug Parker, Executive Vice-President, Principal Soil Scientist/Hydrogeologist

Kalispell Office

300 Learn Lane
Kalispell, MT 59901
Phone: (406) 471-8635

Scott Mason, Senior Geochemist

Colstrip Office

5602 Hesper Road
Billings, MT 59106
Phone: (406) 697-3403

Jim Hall, Field Technician (Colstrip)