Guidance. Expertise. Partnership.
CDG has changed its name to Three Notch Group.
Read MoreThree Notch Group is a regional consulting firm serving clients in the environment and infrastructure space.
Who We Serve
Since 1946, Three Notch Group has served as a trusted guide to its clients, working to identify and navigate the path that leads to a successful project.
Explore moreWhat We Do
Our clients rely on our experienced team of professionals for expert site development and consulting. Our success is built on the strength of our design teams and the breadth of our services.
Throughout construction, our observers are dedicated to thoroughly inspecting every detail to ensure each project is built to last. Utilizing our in-house American Association of State Highway and Transportation Officials (AASHTO) accredited laboratories, we also provide testing for construction materials to confirm the project’s strength and durability.
For over three decades, Three Notch Group has provided emergency response management and support services to assess, address and remediate thousands of emergent situations across the Southeast.
Three Notch Group is a trusted environmental consultant known for addressing a wide range of environmental challenges and leveraging strong regulatory relationships to deliver effective, compliant solutions.
At Three Notch Group, we stay on the cutting edge of technology to collect, manage, integrate, analyze, map, model and display geospatial and geographic data.
Three Notch Group delivers comprehensive geotechnical services, combining advanced geoscience technologies with environmental insights for efficient, cost-effective project solutions.
Three Notch Group understands our clients’ evolving needs and challenges in the natural gas industry and help them prepare for system growth.
Our team of professionals has the experience, resources and knowledge to plan, permit and provide on-going operational consulting for any solid waste management facility.
Three Notch Group leverages decades of experience to enhance the Southeast’s transportation infrastructure, delivering sustainable solutions from sidewalks to roadways, intersection improvements and more.
Our vast knowledge of UST compliance and remediation, combined with our in-house resources, allow us to navigate through today’s regulatory environment and streamline your project.
For nearly 80 years, Three Notch Group has been a trusted partner in delivering successful wastewater infrastructure and treatment solutions that strengthen communities.
Three Notch Group has guided our clients through successful water infrastructure and treatment projects since 1946.
What We Do
Our Work
We specialize in bringing our experience, expertise and professionalism to our clients' projects. We work with driven leaders and partners to bring ideas and innovation into existence.
We strive to exceed client expectations. Our work helps businesses prosper, communities thrive, and environments improve, leaving a legacy of meaningful progress and lasting relationships.