Administrative Staff

Debra West
Business Manager
Email Debra
Phone: (360) 452-8491

Debra is the Business Manager with more than 30 years of experience in the construction related business. When the opportunity presented itself in 2007 Debra became one of the owners. Her responsibilities include marketing, accounting, budgeting, auditing, contracts administration and other financial and related functions to ensure the financial integrity of the company.  


Wynn Hannam
Office Assistant
Email Wynn
Phone: (360) 452-8491

Wynn is the office assistant. Her primary responsibility is Customer Service and works with all departments to achieve a smooth running organization. She performs administrative and office support for multiple supervisors.


Robert A. Leach, P.E., MBA

Principal Engineer

Bob is the Principal Engineer for NTI. He has substantial expertise in water utility engineering, site development engineering, general civil design work, project management, transportation engineering. Bob has served in both the public and private sectors in excess of 40 years and has been involved in land development, transportation and utility projects for both developers and government agencies.


Zach Slota, E.I.T.

Engineering Project Manager

Zach is responsible for managing projects including construction management, grading, drainage, and various other projects. He has experience with field and laboratory testing of concrete, soils and aggregate, structural observations, reinforcing steel placement, anchor bolt inspection, as well as developing plan sets for various projects. 


 Mikael Brostrom, P.E.

Professional Engineer

Mikael performs structural design for buildings using light wood, structurally insulated panel (SIP), CMU, concrete, and steel members for single and multi-story family residence and commercial structures. Designs include lateral wind and seismic loads and gravity loads.



Scott Harksell, PLS

Principal Surveyor

Scott is the Principal Surveyor. He is a successful Land Surveyor with over 27 years of experience in managing all land surveying activities and staffing; responsible for ensuring a quality product in a timely manner. Scott manages the daily survey operations, ensuring that surveys are performed within applicable laws, regulations, and codes as set forth by local, county, state, and federal authorities.


Bill Treese, A.A.S.

Survey Party Chief

Bill is Survey Party Chief performing field survey work. Bill’s fieldwork experience includes: boundary surveys, subdivisions, topographic surveys, construction surveying, DNR Lease surveys, and fieldwork for bathymetric survey.



Testing & Inspections

Shawn West, A.A.S.

Laboratory Manager

Shawn oversees laboratory operations and is responsible for field and laboratory testing of concrete, soils, aggregate, and Special Inspections under Ch. 17 of the IBC. He manages and performs special inspections, project management, QC and QA, reinforcing steel placement, anchor bolt inspection and nuclear densometer testing of compacted soil. In keeping with NTI’s employee owned business policy, Shawn joined the ownership team on June 1, 2012.

  • AAS- CAD Drafting Technologies- ITT Technical Institute
  • ACI Concrete Field Technician
  • CPN Nuclear Densometer Certification
  • HAZWOPER Certification
  • WFLHD Federal Materials Training Course
  • Radiation Safety Officer


Bret Carey, A.A.S.

Senior Engineering Technician

Bret Carey performs testing and inspection in the areas of concrete construction, material qualification using Laboratory procedure and field compaction of soils using a nuclear densometer. Bret is certified in the areas of Field Concrete Testing and Inspection, and APNGA Portable Nuclear Gauge Safety and Operation.

  • ACI Field Testing Technician - Grade 1
  • APNGA Portable Nuclear Gauge Safety & US DOT Hazmat Certification