Lindsay C. Erdman, P.E. & P.L.S., President
John Hjelle, P.E., a member of the firm since 1995
Project / Design Engineer
Jesse Kuennen, a member of the firm since 1999
CADD Specialist Certification
Certified PCC and Aggregate Technician
John Iverson, Survey Crew Chief. A member of the firm since 1984.
Primary Responsibility: Land Surveying Project Manager.
Certified PCC & Aggregate Plant Technician
Joseph Dietzenbach, Survey Technician. Joined the firm in 2011.
Survey Crew Assistant/ CADD Technician
Certified Aggregate Technician - Level 1
Karla Erdman, Administrative Assistant. A member of the firm since 1995.