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This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2025. This website is no longer updated and links to external websites and some internal pages may not work. More information »

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Combined Air Emissions Reporting

  • Combined Air Emissions Reporting

    Streamlining the way State, Local, Tribal Authorities and Industry report air emissions to EPA.  Learn more about the CAER project and its goals.

The Combined Air Emissions Reporting Project (CAER) seeks to streamline air emissions reporting from Industry, State, Local, and Tribal authorities to EPA. 

  • Combined Air Emissions Reporting System (CAERS)

    Screenshot of Industry Emissions Report Summary Page in CAERS

    Access the user guide, video trainings, and other reporting resources for industry reporters.

    Learn to use CAERS
  • CAER Product Design Team (PDT) Projects

    Image of trees and a small wooden bridge over a brook.

    Learn about the projects we've done with our SLT partners to gather program requirements for CAERS.

    Explore PDT Projects
  • Resources for State, Local, and Tribal (SLT) Authorities

    Picture of Mount Rainier in Washington State

    Access information about adopting CAERS and onboarding.

    Find SLT Resources
Contact Us About Combined Air Emissions Reporting to ask a question, provide feedback, or report a problem.
Last updated on October 31, 2024
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