Green Car Congress

SEPTEMBER 9, 2011

US EPA Region 9 8-hour ozone trends, 1979-2000. These State Implementation Plans (SIPs) are the roadmaps to meeting the 1997 8-hour ozone National Ambient Air Quality Standards (NAAQS) of 0.08 In 1997, EPA first established the 8-hour ozone standard, which replaced the older 1-hour ozone standard (0.12 Source: EPA.

Ozone 236

Ozone EPA Pollution 2002 236

Green Car Congress

AUGUST 21, 2009

Reducing emissions of black carbon soot and ground-level ozone would quickly make a considerable dent in the climate change problem and would also contribute to public health and protect crop yields, according to an essay in the September/October issue of Foreign Affairs. Besides a danger to breathe, ozone lowers crop yields.

Climate Change 262

Climate Change Ozone Climate Carbon 262

Green Car Congress

DECEMBER 23, 2016

This timeframe is consistent with the lead-time requirements of the Clean Air Act, and is aligned with a milestone implementation year for the EPA heavy-duty Phase 2 GHG program. (In In the final HD Phase 2 rule, EPA had noted the evidence supporting the need for more stringent national NO x emissions standards.).

EPA 150

EPA Standards Ozone 2000 150

Green Car Congress

SEPTEMBER 26, 2009

Increased leadership from US EPA and the railroads, along with funding to address California’s needs, would signal a clean-air commitment that must be made to protect those who live and work near rail yards. Diesel exhaust contains a variety of harmful gases and more than 40 other known cancer-causing substances.

Diesel 170

Diesel California Emissions 2007 170