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

National Underground Group's headquarters in Irvine, CA, United States

Dale Ambrosini

Brenda Coburn

Evangeline Lorenzo

Hajra Zigic

The Human Resources Team at National Underground Group is responsible for managing employee relations, recruitment, and talent development across the organization. They ensure compliance with labor laws, oversee payroll processes, and provide strategic HR support to align workforce initiatives with the company's goals in delivering underground infrastructure solutions. By fostering a positive work environment, the team plays a critical role in enhancing employee engagement and organizational effectiveness.

National Underground Group

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Teams

Human Resources Team

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