EPA Proposes New Tougher Ground-Level Ozone Standards
Green Car Congress
JANUARY 7, 2010
Counties projected to violate proposed Primary 8-hour Ground-Level Ozone Standards in 2020. The United States Environmental Protection Agency has proposed the strictest standards to date for ground-level ozone. Ground-level ozone forms when emissions from industrial facilities, power plants, landfills and motor vehicles react in the sun. In September 2009 Administrator Jackson announced that EPA would reconsider the existing ozone standards, set at 0.075 ppm in March 2008.