September 4, 2012 11:15 AM, EDT

EPA Air Regulatory Official Stepping Down

Margo Oge, the high-level official for the U.S. Environmental Protection Agency who has spearheaded the agency’s efforts to reduce air pollution and greenhouse gas emissions from the U.S. transportation sector, is retiring from the agency where she worked for more than three decades.

The agency credits Oge, director of EPA’s Office of Transportation and Air Quality, with guiding EPA’s efforts to implement the clean Tier 2 vehicle and gasoline sulfur program, the 2007 clean diesel truck, and bus program and the clean nonroad diesel engine and fuels program.

In a personal email to her co-workers, obtained by Transport Topics, Oge said she plans to step down at the end of September, saying she it is time to “start a new chapter.”

“I haven’t decided on exactly what yet — first I want to catch my breath and share time with my family — then dive into new challenges in the new year,” Oge wrote.

She lauded her staff for helping clean up the environment.

“Cars, trucks, busses, locomotives, marine engines and every other piece of equipment that moves and produces emissions have been transformed,” she wrote. “The fuels they burn have been transformed. As a result of our actions, tens of thousands of premature deaths, respiratory illnesses and other ailments will be prevented.”