Since 1978, HWA's engineers, geologists, environmental scientists, construction inspectors, and laboratory technicians have been helping to create a better, safer, more sustainable built environment in the Pacific Northwest and abroad. In additional to our engineering and science services, we operate a state-of-the-art materials testing laboratory, accredited the American Association of State Highway and Transportation Officials (AASHTO) R18.  Located in Bothell, Washington, HWA GeoSciences Inc. provides a full range of geotechnical and geoscience solutions to public agencies and engineering / architecture firms, for design and construction of buildings, parks, solid waste, transportation, waterfront, water, wastewater, and stormwater facilities.