The Environmental Protection Agency just tightened standards for tiny, pervasive soot particles from construction sites, smokestacks, tailpipes, wildfires and other sources.
Why it matters: Air quality in Harris County, with its factories and petrochemical plants, does not meet the revised standard, per the EPA .
The big picture: The Houston area is a hot spot for fine particle air pollution, and the new rules could impact new and existing development.
Driving the news: The agency is imposing a new annualized exposure mandate for fine particulates of 9 micrograms per cubic meter (µg/m3), down from the current 12 µg/m3 requirement, Axios’ Ben Geman reports .
Threat level: Soot particle air pollution is dangerous and linked to asthma, irregular heartbeats, bronchitis, and even premature death in people with heart or lung disease, per the EPA.
- Multiple studies show people of color face higher exposure to fine particulates.
Zoom in: The Houston area ranked sixth worst in the nation for air pollution of fine particles known as PM2.5, according to a Guardian analysis from last year.