Engineering Staff:

Lindsay C. Erdman, P.E. & P.L.S., President

John Hjelle, P.E., a member of the firm since 1995

Jake Hildebrand, E.I.T., a member of the firm since 2005

Jesse Kuennen, a member of the firm since 1999
    CADD Specialist Certification
    Certified PCC Testing Technician Level I,
    Certified PCC Plant Technician Level II,
    Certified Aggregate Technician Level I, & Level II

Surveying Staff:

John Iverson, Survey Crew Chief.  Primary Responsibility: Land Surveying Project Manager.
    A member of the firm since 1984
    Certified PCC Plant Technician Level II,
    Certified PCC Testing Technician Level I,
    Aggregate Sampling Technician Level I,
    Certified Aggregate Technician Level II.

Tony Meyer, Survey Technician.  A member of the firm since 1971.

Joseph Dietzenbach, Survey Technician. Joined the firm in 2011.

Support Staff:

Karla Erdman, Administrative Assistant.  Responsible for accounting and financial reporting.

Jessica Sloan, Office Assistant.  Joined the firm in 2008.  Primary responsibility for Project Records and Documentation