California State Implementation Plans
This page last reviewed April 21, 2015
On January 29, 2015, U.S. EPA published the Final Rule approving SIP revisions that provide for attainment of the 1997 8-hour ozone national ambient air quality standard in the Sacramento Metro Ozone Nonattainment Area. This Rule will become effective on March 2, 2015.
Staff Review of the South Coast Air Quality Managment District's Supplement to the 24-Hour PM2.5 State Implementation Plan for the South Coast Air Basin.
Yuba City/Marysville PM2.5 Nonattainment Area (Feather River) has
been redesignated as attainment for the 2006 federal PM2.5 24-Hour
Standard. This redesignation will become effective on January 8, 2015.
Further information can be found on the Feather River Air
Management Plan page.
The California Infrastructure SIP revision is now available. The Board approved the revision at a public hearing on January 23, 2014. The Infrastructure SIP revision is administrative in nature and covers the National Ambient Air Quality Standards (federal standards) for ozone (1997 and 2008), fine particulate matter (PM2.5; 1997, 2006, and 2012), lead (2008), nitrogen dioxide (2010), and sulfur dioxide (2010). The proposed revision describes the infrastructure (authorities, resources, and programs) California has in place to implement, maintain, and enforce these federal standards. It does not contain any proposals for emission control measures.
What is a State Implementation Plan?
The table below includes information on SIP activities for ozone, carbon monoxide and particulate matter. More specifically, it provides links to the attainment plans and and corresponding documents that are available on ARB's website.
By selecting a nonattainment area on the far left, you will be linked to ARB and District supporting documentation including staff reports, submittal letters, and resolutions. If you prefer to only view the plan, identify the criteria pollutant and select the appropriate year under the attainment plan column on the right. You may also use the district link tool below to scroll to a specific district.
Resolutions and Executive Orders
ARB uses Board Resolutions and Executive Orders to act on proposed SIP revisions and authorize their inclusion in California's SIP. The area-specific links in the "ARB and Supporting Documentation" portion of the table below provides links to Board Resolutions and Executive Orders that are available electronically.