HDL has designated professional engineers and technicians who conduct field inspections and material testing to ensure project specifications are met during the construction phase. Our American Association of State Highway and Transportation Officials (AASHTO) accredited lab in Palmer provides soil, concrete, and asphalt testing.
Our WAQTC- and ACI-certified staff are trained to provide accurate results on tight schedules. We provide both Quality Control and Quality Assurance testing to meet our client’s needs – from urban communities to remote villages. Our licensed Special Inspection staff routinely provide and coordinate inspection for soils, concrete, masonry, structural wood, fireproofing, and structural steel.