About NRDC

NRDC Experts: Air

Air pollution, both indoors and outdoors, poses health risks to millions of Americans every day, contributing to asthma, emphysema, heart disease, and other potentially lethal conditions. Managing air pollution causes, and defending successful safeguards, such as the Clean Air Act, is critical to the human, economic, and environmental health of our communities. Read more.

John D. Walke

John D. Walke Director, Climate & Clean Air Program

Press Contact:
Bob Keefe
bkeefe@nrdc.org
(202) 289-6868

Bio

John D. Walke is a senior attorney and clean air director for NRDC in Washington, D.C., a position he has held for more than ten years. He is responsible for NRDC’s national clean air advocacy before Congress, the courts, the U.S. Environmental Protection Agency (EPA) and the public. Prior to joining NRDC in 2000, John worked for the EPA in the air and radiation law office of the Office of General Counsel, from 1997 to 2000. At EPA, John worked on permitting, air toxics, monitoring, and enforcement issues under the Clean Air Act. Before working at the EPA, John was an associate in the Washington, D.C. law firm, Beveridge & Diamond. John graduated from Duke University in 1990 with a B.A. in English and from Harvard Law School in 1993 with a law degree.

David Pettit

David Pettit Director, Southern California Air Program, Urban Program

Press Contact:
Jessica Lass
jlass@nrdc.org
(310) 434-2300

Areas of Focus

Litigation, air pollution, oil spills, California Environmental Quality Act, federal natural resource damages assessment proces, sustainability, alternative energy, green development, environmental health, environmental justice and reform, environmental policy.

Bio

David Pettit is director of NRDC's Southern California air program in Santa Monica and an experienced trial and appellate lawyer. Since joining NRDC in 2007, he has focused on curbing pollution in California by litigating against polluting industries and campaigning for clean, alternative energies and greener development in urban areas.

David has litigated environmental cases in state and federal trial and appellate courts for many years in private practice and at NRDC, including major air pollution matters, offshore oil spills, groundwater pollution, habitat preservation, and natural resource damage assessment disputes. He has a B.A. in philosophy and a law degree from UCLA.

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