Schnabel Engineering DC (SEDC) specializes in innovative and cost-effective geotechnical design solutions. SEDC personnel have over 30 years of experience working in the District of Columbia, Maryland and Virginia and our clientele include government agencies, owners, developers, contractors and A/E firms. Project delivery and cost control are critical to success and SEDC will work with you to meet your needs and the team’s project goals. There services include Geotechnical Engineering, Construction Materials Testing and Observation,Geosciences,Tunnel Engineering,Vibration Monitoring.