according to naaq standards 24 hour conc of lead

  • EPA National Ambient Air Quality Standards (NAAQS)

    EPA Home > Air & Radiation > National Ambient Air Quality Standards (NAAQS) Where You Live ... 24-hour Average: 150 µg/m 3 ... equivalent concentration. Frequently ...

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  • National Ambient Air Quality Standards (NAAQS ...

    National Ambient Air Quality Standards (NAAQS) National Ambient Air Quality Standards (NAAQS) Table Has Moved . ... Lead Standards; Nitrogen Dioxide Primary Standards;

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  • The National Ambient Air Quality Standards

    The National Ambient Air Quality Standards (NAAQS) for Particulate Matter ... daily concentration averaged over 24-hour ... National Ambient Air Quality Standards ...

    • Authors: Robert EsworthyAffiliation: Beckman Research InstituteAbout: Air quality index · Air pollutionInquire Now
    • National Ambient Air Quality Standards Washington

      National and State Ambient Air Quality Standards. ... Ozone National Ambient Air Quality Standards and ... over a 24-hour period. An annual concentration of 15 ...

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    • National Ambient Air Quality Standards (NAAQS)

      The 1978 lead standard ... The 1971 annual and 24-hour SO2 standards were revoked in that same rulemaking. ... National Ambient Air Quality Standards ...

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    • Air Quality: EPAs 2013 Changes to the Particulate

      Air Quality: EPAs 2013 Changes to the Particulate Matter (PM) Standard Congressional Research Service Summary On January 15, 2013, the Environmental Protection ...

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    • National Ambient Air Quality Standards Pennsylvania

      Ambient Standards. The federal Clean Air Act established the National Ambient Air Quality Standards ... The 1971 annual and 24-hour SO2 standards

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    • National Ambient Air Quality Standards Wikipedia

      The U.S. National Ambient Air Quality Standards ... 24-hour: Not to be exceeded ... with maximum hourly average concentration greater than 0.12 ppm, ...