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Soils and Materials Testing Laboratory

We have a complete laboratory for testing and analyzing soils and other construction materials: Soils Aggregates Concrete Asphalt Building materials Concrete and bituminous mix designs Soil stabilization testing Asphalt recycling Related Projects

Subsurface Investigations

We have company-owned equipment including: Truck-mounted drill rig All-terrain drill rig Track-mounted drilling rig Core drilling machine Ground-penetrating radar equipment Heavy duty truck Water hauling truck We can perform a multitude of subsurface investigations and… Subsurface Investigations

Land Surveying Services

We have professional land surveyors and experienced survey crews equipped with conventional and electronic equipment for various surveying needs. Boundary Surveys Topographic Surveys ALTA/ASCM Title Surveys Drainage Surveys Easement Documents Property Legal Descriptions Right-of-Way Documents… Land Surveying Services

Stephen K. Jacobs, EI, SIT

Stephen K. Jacobs

Professional Engineer and Surveyor-in-Training, Decatur office Education & Background Bachelor of Science in Civil Engineering, Southern Illinois University, Carbondale, 2009 Licensed Professional Engineer in Illinois Licensed Surveyor-in-Training in Illinois Certified Professional in Erosion and Sediment… Stephen K. Jacobs

Christopher S. Shaffer, PE, Owner

Christopher S. Shaffer

Principal-in-Charge of Mechanical, Electrical and Plumbing Engineering Services, Decatur Office Education & Background Bachelor of Science in Agricultural Engineering, University of Illinois, Urbana-Champaign, 1996 Master of Science in Agricultural Engineering, University of Illinois, Urbana-Champaign, 1999… Christopher S. Shaffer

Matthew Schwenk, PE, PLS

Matthew A. Schwenk

Principal-in-Charge of Land Surveying Services, Decatur Office Education & Background Bachelor of Science in Civil Engineering, University of Illinois, Urbana-Champaign, 1995 Licensed Professional Engineer in Illinois and several other states Licensed Professional Land Surveyor in Illinois… Matthew A. Schwenk

Dave Baldwin, Drilling Operations Manager, SKS Engineering

W. David Baldwin

Drilling Operations Manager, Decatur office Education & Background  Licensed Water Well Driller in Illinois, Indiana, and Missouri Member of Board of Directors for the Illinois Association of Groundwater Professionals Experience & Responsibilities Responsibilities include coordinating… W. David Baldwin

Michael A. Smith, Senior Technician And Radiation Safety Officer

Michael A. Smith

Senior Technician And Radiation Safety Officer, Decatur Office Education & Background Associate of Applied Science. Lake Land College, Mattoon, Illinois, 1989 Experience & Responsibilities Illinois Department of Transportation Certificates for Bituminous Concrete Level I and Level… Michael A. Smith

Jerrel L. Shaffer, PE, SE, Owner, President

Jerrel L. Shaffer

Geotechnical and Structural Engineer, Decatur office Education & Background Bachelor of Science in Civil Engineering, University of Illinois, Urbana-Champaign, 1973 Master of Science in Civil Engineering, University of Illinois, Urbana-Champaign, 1974 Experience & Responsibilities Previously… Jerrel L. Shaffer