About People

Joseph Hahn

Joseph Hahn, EIT

Environmental Staff

Joseph has been involved in many facets of geologic engineering, including surface and subsurface geology, field reconnaissance, overburden and bedrock exploration, laboratory work, quality control, and instrumentation. He is familiar with various soil and rock construction and excavation techniques, especially hazardous waste site remediation techniques.

Joseph has worked on projects that include earthen dam construction, rock cut construction, instrumentation installation and monitoring, hazardous waste removal and treatment, temporary shoring, engineered fill, auger-cast pile installation, concrete testing, surveying, ground water monitoring, and low-capacity foundations. He specializes in site investigations, remedial alternatives analysis, and remedial action for a variety of contaminants, including petroleum products, chlorinated solvents, metals, methane, leachate, pesticides, nitrate, sulfate, and PCBs. In addition, Joseph also has expertise in vapor intrusion investigation, brownfield redevelopment, ArcGIS, grant applications and management, liability exemptions, and risk analysis. 


  • BS, Geological Engineering and Geoscience, University of Wisconsin–Madison, 2017


  • Engineering in Training, Wisconsin
  • ACI Concrete Field Technician - Grade I


  • American Society of Civil Engineers 

Practice Area

Environmental Sciences

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