TTL Engineering Services, LLC

TTL Engineering Services, LLC is a Toledo, Ohio–based engineering consulting firm with over 95 years of experience that provides quality control and inspection, drilling and geotechnical engineering, concrete/asphalt/aggregate and soils laboratory services, and geotechnical and environmental consulting; TTL Engineering Services, LLC supports construction projects with subsurface investigations, inspections, and laboratory testing, operates a local office at 1915 North 12th Street, and can be reached by phone at 419-241-4440.