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HydroGeoLogic, Inc. (HGL)

Employee-owned environmental engineering firm delivering remediation, groundwater modelling, munitions response and radiological cleanup at contaminated sites across the United States.

HydroGeoLogic, Inc. (HGL) is an environmental engineering firm that cleans up contaminated sites, unexploded ordnance and radiological hazards, with the aim of restoring natural resources and returning affected land to beneficial use. The company has been in operation for more than 35 years and employs more than 550 professionals. It is employee-owned and works across the United States and U.S. territories.

HGL's technical work spans groundwater and surface water modelling, environmental restoration and multi-media contamination cleanup. It handles military munitions response, including unexploded ordnance, radiological cleanup, and remediation of both traditional chemical contamination and emerging contaminants such as PFAS. Its clients include U.S. federal agencies, among them the Environmental Protection Agency, the Department of Defense and the Department of Energy.

The firm states core values of care, integrity, innovation and stewardship, and reports investment in research and development, alongside an emphasis on the safety and well-being of its staff and the communities in which it works. Staff work in an employee-owned structure on mission-driven environmental problems.

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