Timeline of AB 32 Scoping Plan Activities

This page last reviewed September 14, 2016

This page is a comprehensive collection of AB 32 Scoping Plan activities and other relevant information.  Below you will find AB 32 Scoping Plan activities beginning with the most current information (at the top).  Click on the links below for more detailed information.

2015 / 2016 Schedule



2013 / 2014 Schedule

The AB 32 Scoping Plan update defines the California Air Resources Board’s (ARB) climate change priorities for the next five years and lay the groundwork to reach long-term goals.  The update also highlights California’s progress toward meeting the near-term 2020 GHG emission reduction goals defined in the initial Scoping Plan.




In December 2012, staff updated the Board on activities to implement AB 32, including development of the Update to the AB 32 Scoping Plan.


In 2011, ARB held a public workshop and a public hearing on the AB 32 Scoping Plan.  The public workshop discussed the supplement to the AB 32 Scoping Plan Functional Equivalent Document (FED).  During the public hearing, ARB approved the Functional Equivalent Document (including the Supplement) and the AB 32 Scoping Plan. 

In addition, ARB released a Status of Scoping Plan Recommended Measures Sheet


April 2010, ARB held a public meeting to discuss the updated AB 32 economic analyses.  ARB staff, experts and stakeholders discussed several economic analyses relating to AB 32.  This included an overview of recent economic studies of the implementation of the AB 32 Scoping Plan and an opportunity for public comment. 


In 2009, ARB held a workshop on AB 32 implementation of the Scoping Plan.


In December 2008, ARB approved the Scoping Plan.  The Scoping Plan is the roadmap of how California will reduce greenhouse gas emissions to 1990 levels by 2020.

In 2008, ARB received and posted various types of public comments related to the development of the AB 32 Scoping Plan document as well as other AB 32 related activities.  Public comments on the Scoping Plan were welcomed, reviewed and posted in various locations on the website.  Comment submittals include informal comments, formal letters sent to individual ARB staff, and submissions to ARB’s electronic public comment docket system.

During 2008, ARB held multiple public meetings to share ideas and gain input from stakeholders regarding program development.  This also included technical work group meetings, community meetings and other public meetings.  All interested stakeholders participated during these meetings.


In August of 2007, ARB staff solicited for public ideas to reduce greenhouse gas emissions.


In 2006, Governor Schwarzenegger signs California’s landmark legislation known as the Global Warming Solutions Act of 2006 (AB 32).  Development of the Scoping Plan is a central requirement of AB 32 that requires California to reduce its greenhouse gas emissions to 1990 levels by 2020.


In 2005, Governor Schwarzenegger signs Executive Order S-3-05 that requires an 80 percent reduction below 1990 levels by 2050.

For questions or comments regarding the Climate Change Scoping Plan, please contact: 

Stephanie Kato

Natalie Lee

Jakub Zielkiewicz