Thaddeus (Tad) Cline, P.E., L.G., L.H.G.

Thaddeus (Tad) Cline, P.E., L.G., L.H.G.

Principal Civil Engineer / Hydrogeologist

Seattle, Washington Office

  • MS Civil Engineering
  • BS Geology
  • 25 years experience
Direct: (425) 295-0849
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Tad is a civil engineer and hydrogeologist with 25 years of experience conducting and managing projects involving site assessment, contaminant hydrology, environmental cleanup, water resources, and environmental data systems. His specialties include project/program management, environmental chemistry, remediation, environmental data management, and stormwater discharge regulatory compliance. Tad leads Farallon’s Seattle office.

Clients and Industries

  • Industry/Manufacturing
  • Real Estate/Financial
  • Developers/Construction
  • Legal/Litigation
  • Regulatory Compliance

Proficiencies and Experience

  • Environmental Due Diligence
  • Site Characterization
  • Remediation/Cleanup Actions
  • Stormwater
  • Landfills

Key Projects

Fun Facts

Tad began his career raising pigs and sheep on a Lopez Island farm, supplementing his income with work in commercial salmon gillnetting, haying, aquaculture, and construction. At the age of 10, he won the Guam 420 sailing fleet championships with his dad; he bought his first sailboat at age 14. Tad’s free time is spent with his two children following passions in the outdoors, including exploring the mountains, biking, skiing, sailing, and travelling. 

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