CONTACT & LOCATIONS NEWS MARKETS SERVICES PROJECTS ABOUT CAREERS SERVICES Arctic Engineering Meeting the challenges of arctic and subarctic conditions From our offices in Fairbanks and Anchorage, we have advanced the field of foundation design and construction in permafrost conditions. Pioneering the design and use of a passively refrigerated gravel pad foundation using flat-loop thermosyphons, we have designed a variety of foundations and earth structures. We model thermal conditions using state-of-the-practice software with consistently accurate results. In Alaskan arctic and subarctic conditions, we have performed underground petroleum spill investigations and designed and operated site cleanup measures, including free-product recovery, groundwater treatment, vapor extraction, air sparging, and bioremediation. We've conducted contaminant characterization and remedial design at many sites underlain by permafrost and have designed and installed pressurized monitoring wells through permafrost, in which air pressure is used to depress the water in the well below the bottom of the permafrost, preventing the well from freezing. SERVICES INCLUDE: Geotechnical investigations Instrumentation and monitoring Thermal modeling Testing for soil engineering properties Permafrost foundation design ARCTIC PROJECTS Dalton Highway Milepost 109-144 Reconstruction Transportation MORE Tanana River Bridge MORE Multiple F-35A Projects Property Development MORE SEE ALL PROJECTS Let's Talk About Your Project GET IN TOUCH MARKETS Transportation Water Property Development Industrial Federal SERVICES Geotechnical Engineering Contamination / Remediation Geologic Hazards Natural Resources Water Resources Design-Build Tunneling / Underground Arctic Engineering Construction Management Specialty Services ABOUT The Company People Corporate Responsibility/Scholarships CONTACT & LOCATIONS Seattle Anchorage Chicago Denver Fairbanks Jacksonville Los Angeles Madison Portland Sacramento Salt Lake City St. Louis Tri-Cities PROJECTS Explore CAREERS Working At Shannon & Wilson CONTACT & LOCATIONS NEWS CLIENT PORTAL © 2021 SHANNON & WILSON, INC. SEATTLE WEBSITE DESIGN