GSI employs cross-disciplinary teams of environmental engineers and scientists focused on bringing innovative solutions to our clients' toughest environmental challenges pertaining to water resources, air quality, land restoration, sustainability, renewable energy, ecological services, data science, toxicology, and energy and critical minerals production. Headquartered in Houston, Texas, GSI operates offices in Texas (Austin and Houston), California (Irvine, the San Francisco Bay Area, and Folsom), Colorado (Denver), Washington (Olympia), Montana (Missoula and Helena), Georgia (Atlanta), North Carolina (Raleigh), Virginia (Herndon), and New York (Syracuse), with remote staff located throughout the US.