GDSI (formerly Green Deconstruction)

GDSI is a demolition and environmental abatement contractor based in Portland, Oregon, working throughout the Portland metro area and the Pacific Northwest. The company decommissions underground storage tanks and their piping, either by digging them out for disposal or by cleaning them and filling them with concrete. It also provides soil remediation, removal and disposal of hazardous materials, selective dismantling, seismic retrofits, concrete cutting, and full building demolition. GDSI takes on commercial and redevelopment projects in Oregon and Washington, with licensing listed for both states.