Since 1947, National Underground Group, formerly known as Hoffman Southwest Corp., has provided a full spectrum of services to maintain healthy underground infrastructures. Today, through our family of businesses, Pro-Pipe, Tri-State Utilities, Accumark, Pipe Vision and Benchmark, National Underground Group is focused on providing underground infrastructure solutions to municipalities, utilities, government agencies, construction companies and engineering firms throughout the U.S.  

Construction

Utilities

National Underground Group

Dale Ambrosini

Josh Johnson

Brenda Coburn

Evangeline Lorenzo

Jeralin Rodrigo

Chris Berry

Human Resources Team

Teams at National Underground Group

Human Resources Team