HGL is a full-service environmental engineering and construction firm (small business under NAICS 562910) with 20 years of experience providing innovative and cost-effective solutions to restoration problems. For the Department of Defense (DoD), the U.S. Environmental Protection Agency (EPA), and other government and private sector clients, HGL provides remediation, investigation, and compliance services.

An employee-owned company, HGL has maintained continuous growth in both revenues and staff since its incorporation in 1987 and has earned a reputation of exceeding customer expectations. Engineering News Record has listed HGL as one of the top 200 environmental firms since 2001 and our company's consistent, high quality work has resulted in repeat business.

HGL is in the forefront of environmental technological expertise. In addition to emphasizing in-house technology development for environmental analysis, HGL is the prime contractor for DoD’s Strategic Environmental Research and Development Program/Environmental Security Technology Certification Program (SERDP/ESTCP). As such, our company participates in the evaluation and demonstration of innovative environmental technologies that solve complex environmental problems and reduce the cost of DoD operations.

HGL has 18 offices in North America, as well as a presence in Southeast Asia (Thailand, South Korea, and Japan). In 2004, we changed our company logo to reflect HGL’s transformation from a specialty group focused on hydrogeology and modeling to a full-service engineering and construction company with core capabilities in: