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Agriculture Frequent Questions

View frequently asked questions about Agriculture.

  • Where do I find information about pasture, rangeland, or grazing operations?

    The Agency's Farmer and Rancher Inquiry Tool: Grazing Guide provides helpful information about pasture, rangeland, or grazing operations. More information can also be found on the Agency's agriculture Web site which contains information on pasture, rangeland, or grazing operations.

    • Last published: September 18, 2026
  • I raise livestock, what environmental laws or regulations apply to me?

    EPA’s environmental laws or regulations that may apply to your livestock operation can be found in the Farmer and Rancher Inquiry Tool: Livestock Guide.

    • Last published: September 18, 2026
  • Explain Working Levels (WL) and Picocuries Per Liter of Air (pCi/L).

    Radon test results may be reported in three different measures – picocuries per liter (pCi/L), Working Levels (WL) and becquerels per meter cubed (Bq/m 3). If your test result is in pCi/L, the EPA recommends you fix your home if the radon level is 4 pCi/L (150 Bq/m 3)or higher…

    • Last published: September 16, 2026
  • What is Radon?

    Radon is a radioactive gas that forms naturally when uranium, thorium, or radium, which are radioactive metals break down in rocks, soil and groundwater. People can be exposed to radon primarily from breathing radon in air that comes through cracks and gaps in buildings and homes. Because radon comes naturally…

    • Last published: September 16, 2026
  • How much can a radon mitigation system cost?

    You have tested your home for radon, but now what? If you have tested your home for radon and confirmed that you have elevated radon levels, 4 picocuries per liter (150 becquerels per cubic meter (Bq/m 3))in air (pCi/L) or higher, our guidance can help you: Select a qualified radon…

    • Last published: September 16, 2026
  • Are we sure that radon is a health risk?

    The EPA already has a wealth of scientific data on the relationship between radon exposure and the development of lung cancer. The scientific experts agree that the occupational miner data is a very solid base from which to estimate risk of lung cancer deaths annually. While residential radon epidemiology studies…

    • Last published: September 16, 2026
  • How often should I test/retest my home for radon?

    Our general guidance from A Citizen's Guide to Radon - (December 2016, EPA 402/K12/002) - suggests: If your living patterns change and you begin occupying a lower level of your home (such as a basement) you should retest your home on that level. Even if your test result is below…

    • Last published: September 16, 2026
  • Where I work we manufacture products from granite and other natural materials. Should I be concerned about radiation in my workplace?

    I work in a granite fabricating and finishing shop. Is there a radon risk in my workplace? Based on existing studies, most types of granite used in countertops and other aspects of home construction are not typically known to be major contributors of radiation and radon in the average home…

    • Last published: September 16, 2026

Agriculture

  • About EPA's National Agriculture Center
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  • Farmer and Rancher Inquiry Tool
    • Livestock Guide
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Contact us about Agriculture
Contact us about Agriculture to ask a question, provide feedback, or report a problem.
Last updated on September 30, 2025
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