Models are used to increase the level of understanding about natural systems and the way in which they react to varying conditions, including the spread of toxic substances in various media, the short and long-term effects of exposure to hazardous substances on humans and the environment and other forms of prediction and risk assessment. Models provide important technical support to EPA and state decision makers in their development and enforcement of guidelines and regulations. Models are also essential to local and federal agencies and services involved in pollution cleanup, emergency response and monitoring public health.

Recommended EPA Web pages

• Information Sources: Models
  A listing of models used to increase the level of understanding about natural systems and the way in which they react to varying conditions.
• Models, Methods, and Databases
  Links to various Office of Research and Development models, methods and databases.
• Council for Regulatory Environmental Modeling: Model Search
  Search for Council for Regulatory Environmental Modeling models in the EIMS database.

Laboratories

Models
Air Models, Emission Factor Models, Exposure Assessment Models, Livestock Analysis Models, Mass Balance Models, Multimedia Integrated Models, Risk Models, Water Models

Monitoring
Biomonitoring, Monitoring Stations, Monitoring Wells, Remote Sensing, Sampling

Research Grants

Research Publications

Risk Assessment

Technology Transfer

Test Methods
Drinking Water Methods, Marine Water Methods