On February 7, 2024, the EPA strengthened the US national air quality standards for fine particulate matter (PM2.5), lowering the primary annual standard from 12 ug/m3 to 9 ug/m3 to improve public health protection. The 24-hour PM2.5 standard remains at 35 ug/m3, while the primary PM10 standard is maintained at 150 ug/m3. However, there are efforts to revert the new lower standard to allow greater PM (and other) emissions.
Review the articles and . Consider the sources of these articles as you read and feel free to find additional sources.
Part I) Provide a brief summary of the expected benefits of maintaining the new PM 2.5 lower standard at 9 ug/m3?
Part II) Provide a brief summary of the reasons why there is a push to reverse the lower air pollutant standards by various groups.
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