The South Coast and San Joaquin Valley suffer from some of the worst pollution in the nation, which is caused by myriad factors including adverse meteorology, ports activities and substantial pollution from trucks that carry produce and international imports to the rest of the nation.


The state is currently working on air quality plans to meet the more stringent 2006 PM2.5 standard. In addition, the state and local districts have launched grant and incentive programs to demonstrate and deploy near zero emitting technologies.

‚Ä®Today’s actions will be published in the Federal Register and will become effective 60 days from the date of publication. EPA’s Federal Register notices include detailed responses to all major comments on our proposed actions.  

‚Ä®For more information on the South Coast and San Joaquin Air Quality Plans, please visit EPA’s web site at: http://www.epa.gov/region9/air/actions/ca.html.