HRA conducted a cultural resources survey under contract with HDR Engineering for the Baseline Wind Project, a 200–500 MW wind energy project in Gilliam County, Oregon, proposed by developer First Wind.

HRA conducted background research for cultural resources, an intensive cultural resource survey, and cultural resource monitoring for the Bonneville Power Administration’s (BPA’s) 17-mile-long Libby to Troy Transmission Line Rebuild Project in Lincoln County, Montana.

Contracted since 2010 to Coeur D’Alene Trust (Trust), HRA has been assisting the Environmental Protection Agency (EPA) in following its applicable or relevant and appropriate requirements in order to comply with the substance of Section 106 of the National Historic Preservation Act as regards its cleanup actions at the Bunker Hill Superfund Site (BHSS) in Northern Idaho’s Silver Valley.

The Seattle Department of Transportation (SDOT) proposed improvements to the Burke-Gilman recreational trail through the Ballard neighborhood of Seattle. Between 2010 and 2011, HRA completed a cultural resources assessment of alternatives to assist SDOT in meeting compliance requirements of the National Environmental Policy Act (NEPA) and Section 106 of the National Historic Preservation Act (NHPA) regarding cultural resources.

HRA completed cultural resources investigations and mitigation for the proposed replacement of the approaches to the National Register-listed Fremont Bridge in Seattle, Washington.

HRA provided cultural resources services to the National Park Service (NPS) for the prescribed Matilda Fire, the Colter Bay Water Main Replacement, Moose Water/Wastewater projects, and Gros Ventre Stabilization. These four separate projects were located in Grand Teton National Park, Teton County, Wyoming.

HRA completed a cultural resources assessment of the Miller Ranch Wind Energy project near Goldendale, Washington.

HRA conducted a Historic Property Evaluation and Technical Report regarding Morgan Middle School in Ellensburg, Washington, a 1929 structure that includes additions from the 1930s–1990s.

In 2011, HRA conducted a reconnaissance-level archaeological survey in advance of installation of fiber-optic line for Tierra ROW and NoaNet.

Between 2006 and 2012, HRA completed cultural resources investigations for the Pacific Connector Pipeline Project in Southern Oregon. Pacific Connector Gas Pipeline is proposing a 36-inch pipe to connect the proposed Jordan Cove Liquid Natural Gas facility near Coos Bay, Oregon, to Malin, Oregon, in Klamath County—a distance of 223 miles.

HRA conducted cultural resource studies and analysis of alternatives for Combined Sewer Overflow (CSO) Reduction projects in the Henderson, Genesee, Windermere, and Madison Park Basins along the west side of Lake Washington in the City of Seattle.

HRA conducted architectural and archaeological investigations for the proposed replacement of the South Park Bridge in King County, Washington.

HRA worked with the Avista Corporation to produce a Historic Properties Management Plan for the Spokane River Hydroelectric Project in Northeast Washington and Northern Idaho.

HRA assisted the Washington State Department of Transportation with public involvement, NEPA/SEPA documentation, and cultural resources inventory and assessment for the US Highway 12 Four-Lane Project between Wallula and Walla Walla.

Since 2006, HRA has contributed to archaeological and architectural studies in Yosemite National Park, including a data recovery in Yosemite Valley.