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Draft Advisory on Climate Change and CEQA released for comment

Office of Planning and Research
P.O. Box 3044
Sacramento, California 95812
December 28, 2018 to March 15, 2019
12:00 am - 5:00 pm

The Governor’s Office of Planning and Research (OPR) has released a discussion draft update to the 2008 advisory on how to analyze greenhouse gas impacts under the California Environmental Quality Act (CEQA).

The discussion draft is available here:

OPR’s Technical Advisories

Since 2008, there have been developments in statutes, regulations, and science, as well as a growing body of case law focused on addressing climate change and greenhouse gas emissions. This discussion draft incorporates developments since June 2008, including regulatory changes made to the CEQA Guidelines in late 2018 by the California Natural Resources Agency (Agency).

OPR seeks your input on this document. In particular, we seek comments on the following:

  1. Are there any important points that were missed that should be addressed?
  2. Do you have any suggestions on how to clarify the topics that were addressed?

Since this discussion draft addresses the existing provisions in the CEQA statute and Guidelines as well as case law, OPR encourages commenters to focus their input on those directives.

Input may be submitted electronically to Please submit all comments before Friday, March 15 at 5:00 pm.

Additionally, OPR has released an update to the Technical Advisory on Evaluating Transportation Impacts in CEQA, which contains OPR’s technical recommendations regarding assessment of vehicle miles traveled, thresholds of significance, and mitigation measures.

The updated technical advisory is available here:

Transportation Impacts (SB 743)

This update incorporates the regulatory changes made to the CEQA Guidelines by the Agency and addresses feedback received since the technical advisory was released in April 2018. OPR may continue to update or supplement this technical advisory in response to new information and advancements in modeling and methods.

Contact Phone: (916) 322-2318

Contact Email: