CDG

Three Notch Group (formerly CDG) is a regional consulting firm serving the environment and infrastructure sectors across the Southeast with offices including Charlotte, offering civil and site development, construction engineering and inspection, emergency response management, environmental consulting, surveying, geotechnical, natural gas, solid waste, transportation, UST, wastewater, and water services; Three Notch Group emphasizes experienced project guidance, thorough construction observation and materials testing using in-house AASHTO-accredited laboratories, strong regulatory relationships, and pragmatic solutions that prioritize safety, compliance, and long-term client partnerships.