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Hamilton County proclaims Earth Day as environmental team highlights air, waste gains
Summary
Hamilton County commissioners adopted an Earth Day proclamation and heard a presentation from the county’s environmental services director on air-quality monitoring, waste-reduction programs and local partnerships that officials said have driven long-term improvements.
Hamilton County commissioners on April 20 proclaimed April 22, 2025, as Earth Day and heard a presentation from Brad Johnson, director of Hamilton County Environmental Services, outlining local air-quality monitoring and waste-reduction efforts.
Johnson told commissioners the county operates 18 air-monitoring sites across five counties and detailed multi-decade declines in several priority pollutants. “I will be brief, but it is a very important day,” Johnson said. He noted that ozone and fine particulate matter remain the more challenging pollutants locally because of the region’s valley geography, even as levels of carbon monoxide and nitrogen dioxide have fallen.
The presentation focused on three themes: air monitoring and trends, waste diversion and community outreach. Johnson said the county tracks federal EPA primary pollutants,…
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