California State Implementation Plans
This page last reviewed September 22, 2014
Report on Reductions Achieved from Incentive-Based Emission Reduction Measures in the San Joaquin Valley is now available.
Staff Review of the Supplemental Document for the San Joaquin 24-Hour PM2.5 Standard State Implementation Plan is now available.
Report on Proposed Updates to the 1997 8-Hour Ozone Standard State Implementation Plans: Coachella Valley and Western Mojave Desert 8-Hour Ozone Nonattainment Areas is now available.
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.