Established in 1993, MTGL provides geotechnical investigation and construction quality control and assurance services to clients throughout Southern California. It furnishes field, site and plant inspections for all construction materials and conducts physical laboratory testing for all of the materials that are placed during these inspections and investigations. MTGL also specializes in the areas of geotechnical engineering, construction consulting, nondestructive examination, roof testing and environmental services. It has undertaken several projects that include educational facilities, office parks, industrial complexes and hotels. Headquartered in Anaheim, Calif., MTGL maintains a location in San Diego.