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About EPA

About the Center for Environmental Measurement and Modeling (CEMM)

On This Page:

What We Do


What We Do

The Center for Environmental Measurement and Modeling (CEMM) conducts research to advance the Agency’s ability to measure and model contaminants in the environment, including research to provide fundamental methods and models needed to implement environmental statutes. Our research involves:

  • Occurrence, fate, and transport in the natural environment
  • Regulatory methods and models
  • Tools to inform and evaluate environmental management practices and policies
  • Environmental indicators
  • Contaminants of emerging concern



Tim Watkins, Director for Center for Environmental Measurement and Modeling  

  • Biography
  • Email Tim Watkins (
  • Phone: 919-541-2106
  • EPA mailing address: USEPA Mailroom Mail Code: D305-01 Research Triangle Park, NC 27711

Alice Gilliland, Deputy Director for Center for Environmental Measurement and Modeling  

  • Biography
  • Email Alice Gilliland (
  • Phone: 919-541-2107
  • EPA mailing addresses: USEPA 26 West Martin Luther King Drive Mail Stop: 236 Cincinnati, OH 45268





  • Athens, Georgia
  • Cincinnati, Ohio
  • Gulf Breeze, Florida
  • Narragansett, Rhode Island
  • Research Triangle Park, North Carolina