Soils Laboratory
Our soils laboratory is certified with the American Association of State Highway and Transportation Officials (AASHTO) and also with the State of California through the Department of General Services, Division of the State Architect (DSA).  We receive biennial assessments from AASHTO Materials Reference Laboratory (AMRL).

NOTICE OF ACCEPTANCE - LABORATORY EVALUATION AND ACCEPTANCE (LEA) 248
Department of General Services (DGS) - Division of the State Architect

AASHTO - American Association of State Highway and Transporation Officials