Science & Technology

Community Scale Air Toxics Ambient Monitoring (CSATAM) Final Reports

Collection of air toxics studies conducted as part of Community Scale Air Toxics Air Monitoring Grants

Land and Sea: Linking Ecosystem Services with Local Concerns in Guanica Bay Watershed, Puerto Rico

The United States Coral Reef Task Force—comprised of leaders from EPA and 11 other federal agencies along with select States, Territories, and Commonwealths—was established in 1998 to stem loses and preserve and protect coral reef ecosystems.

Guidance on NO2 and SO2 EPA Protocol Gases for State-Local Agencies and Specialty Gas Producers

EPA has recently approved the use of direct-reading analyzers to measure nitrogen dioxide (NO2) in ambient air.

Computational Toxicology and Exposure APIs: Data Domains

The Computational Toxicology and Exposure APIs (CTX APIs) are organized into sets of “endpoints” by data domain.

Fact Sheet: Final Petroleum Refinery Rule

This action sets forth the U.S. Environmental Protection Agency’s (EPA’s) decision on aspects of the Agency’s proposed reconsideration of the December 1, 2015,

Information on Running MOVES2014b

This page summarizes important information on installing and running the MOtor Vehicle Emission Simulator (MOVES).

How do I Reset my MOVES Password?

See More Frequent Questions about MOVES and Related Models . MOVES users sometimes forget the password they entered for MariaDB. In this case, you may want to reset the ‘root’ password. Follow these steps: Open Windows Terminal or the Command Prompt (CMD) as ‘administrator’ and type “net stop mariadb”. (Alternately…

Last published: December 17, 2025

Can I Install MOVES on a Server so More than One User Can Access It?

See More Frequent Questions about MOVES and Related Models . No, MOVES is not a multi-user product. MOVES is primarily intended for use on a Windows10 64-bit personal computer. In addition, we have run MOVES2014a, MOVES2014b and MOVES3 on Windows Server 2012 R2 very successfully for years as a single…

Last published: December 17, 2025

Overview of Certification and Compliance for Vehicles and Engines

EPA uses a variety of testing and reporting programs to monitor compliance with emissions regulations.

WhAEM2000 BBM Files - Scobey, Montana

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Scobey Quadrangle, Montana. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Lance Creek, South Dakota

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Lance Creek Quadrangle, South Dakota. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Leadore, Montana

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Leadore Quadrangle, Montana. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Plentywood, Montana

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Plentywood Quadrangle, Montana. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Hungry Horse, Montana

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Hungry Horse Reservoir Quadrangle, Montana. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Havre, Montana

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Havre Quadrangle, Montana. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Hamilton, Montana

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Hamilton Quadrangle, Montana. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Mississippi

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for quadrangles in Mississippi. Files serve as geographic basis for groundwater modeling.

Sources of Indoor Particulate Matter (PM)

Learn about the many sources of Particulate Matter indoors and actions you can take to reduce or control them.