Summit maintains two materials sampling and testing laboratories in North Carolina. One in our corporate headquarters in Hillsborough N.C., and one in Indian Trail, N.C. Summit's materials laboratory is equipped with state-of-the-industry soil, concrete, asphalt and steel-testing equipment. Accredited by AASHTO's Accreditation Program (AAP), the lab can perform NCDOT Tier 1 and Tier 2 soil test methods. We participate in AASHTO's proficiency testing programs, including AASHTO Material Reference Laboratory (AMRL-soils), and Cement and Concrete Reference Laboratory (CCRL-concrete/aggregate).
The laboratory staff is trained to conduct ASTM, AASHTO and NCDOT test methods, and our testing equipment is diligently maintained and calibrated on a semi-annual basis, as required by the National Institute of Standards and Technology (NIST).