About Us
CES Group P.A. was formed in the Fall of 2009. Its proceeding companies, dating back to the 1960’s, include Grove & Company, Cohorst & Associates (1982-2001), and Cohorst Engineering & Surveying (2001-2009). Like our predecessors, CES Group will continue to provide innovative engineering & surveying services to our clients. Our service area includes Northeast Kansas and Southeast Nebraska with a focus on the counties of Washington, Marshall, & Nemaha in Kansas. Providing cost effective services with a personal touch is our goal and we expand on that goal by keeping up with new technologies and building relationships with our clients.
Civil Engineering
- Tony Duever, PE
Land Surveying, GPS/GIS, MTI & Flood Elevation Mapping & Drafting
- Robert Peschel, LLS, LPA
- Clint Friedrichs, AAS, LPA
- Nick Rengstorf, AAS, LPA
Support Staff
- Steven Cohorst, PE, RLS
- W. Charles Weickert, LPA
- Joseph Peschel, LPA
Office Manager & Secretary
- Sandra L. Burton