Arias & Associates, also known as A&A, is one of the leading geotechnical engineering and testing firms in southern Texas that has been serving customers since 1996. The firm provides services for high-rise buildings, manufacturing plants, and landfill and transportation facilities. It offers subsurface exploration, soil study, geologic assessment, and slurry wall design and analysis services. The firm provides environmental site assessment, detention pond inspection, waste management and asbestos consulting services. Its additional services include site preparation, aggregate and asphalt testing, and structural steel and roofing observation. The firm s clients include Psychological Corporation, Camino Real International Bridge and Wetmore Business Park. It is accredited by the South Central Texas Regional Certification Agency. The firm is a member of the International Association of Foundation Drilling, American Society of Civil Engineers and American Institute of Architects. Arias & Associates is headquartered in San Antonio.