We provide innovative environmental solutions for a wide range of clients.
STI has been trusted by government agencies, private industry, universities, law firms, and tribal organizations for over 35 years. Our broad experience and wide skill set help us find objective solutions that meet the needs of our diverse clients.
Federal agencies can easily access our many services through one of our contract vehicles. Our dedicated contracting team provides ASAP contracting for all of our clients.
334512 Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use
334519 Other Measuring and Controlling Device Manufacturing
511210 Software Publishers
541511 Custom Computer Programming Services
541512 Computer Systems Design Services
541519 Other Computer Related Services
541990 All Other Professional, Scientific, and Technical Services
813312 Environment, Conservation and Wildlife Organizations
Select Clients that We Serve
Our dynamic team has experience collaborating closely with government partners in the United States and around the world to provide responsive, high-quality service, innovative solutions, dedicated support, and superior results.
Select Government Clients
Arizona Department of Transportation
Bay Area Air Quality Management District
California Department of Transportation
Federal Highway Administration
Joint Fire Science Program
Lake Michigan Air Directors Consortium
National Aeronautics and Space Administration
National Institutes of Health
Nevada Department of Transportation
Sacramento Area Council of Governments
South Coast Air Quality Management District
U.S. Department of Agriculture, Forest Service
U.S. Environmental Protection Agency
Our broad experience with both private industry and government agencies helps us find objective solutions to help our private sector clients understand and navigate the regulatory environment.
Select Private Industry Clients
American Petroleum Institute
Electric Power Research Institute
RasGas Company Ltd.
Shell Oil Company
Valero Energy Corporation
University & NGO
Our university, non-profit, and non-government organization (NGO) clients benefit from STI's unmatched responsiveness, flexibility, and research expertise.
Select University and Non-Profit Clients
University of California, Los Angeles
University of California, Berkeley
University of California, Davis
University of Southern California
California State University, Fullerton
California Institute of Technology
University of Nevada, Reno
Colorado State University
Health Effects Institute
William & Flora Hewlett Foundation
Resources for the Future
STI has worked with attorneys from the U.S. Department of Justice (DOJ), state DOJs, and private law firms for more than two decades. Our work with government agencies engenders a high level of trust in our analyses and helps us provide objective compliance and regulatory support.
Select Legal Clients
U.S. Department of Justice
California Department of Transportation
North Carolina Department of Justice
New York Attorney General
Various private law firms
We work closely with our tribal partners to ensure effective collaboration to identify and address the air quality needs of tribal communities.
Select Tribal Clients
Blue Lake Rancheria
Nez Perce Tribe
Gila River Indian Community
Leech Lake Band of Ojibwe
Salt River Pima-Maricopa Indian Community
We partner with agencies and organizations across the globe to develop environmental solutions that meet their specific needs. Our scientists stay up-to-date on global environmental challenges to offer capacity building and multi-language technical support services across all geographic boundaries.
Select International Clients
Shanghai Environmental Protection Bureau (China)
Ningbo Environmental Monitoring Center (China)
Shanghai Environmental Monitoring Center (China)
British Columbia, Ministry of Environment (Canada)
Environment Canada (Canada)
Alberta Environment and Sustainable Resource Development (Canada)