Buy Clean California Act (AB 262)

The Department of General Services (DGS) implements laws, also called statutes, passed by the California Legislature and signed by the governor. 


Learn about the maximum acceptable Global Warming Potential (GWP) for eligible materials: carbon steel rebar, flat glass, mineral wool board insulation and structural steel. The Buy Clean California Act (Assembly Bill (AB) 262, Chapter 816, Statutes of 2017), signed into law October 15, 2017, states that by January 1, 2019, DGS is required to establish and publish the GWP in the State Contracting Manual.


An amendment to the Buy Clean California Act (AB 1817, Chapter 37, Statutes of 2018), signed into law June 27, 2018, amends the existing language and implementation dates.


The current legislation can be found under Public Contract Code 3500-3505.

Check back periodically for updates.

AB 262 External Stakeholder Comments

DGS would like to thank you for submitting comments in response to the AB 262 External Stakeholder Outreach Event held on June 26, 2018. DGS reviewed all submitted comments and provided responses. These documents can be found at the links below:

DGS expects to continue engaging with internal and external stakeholders as we implement the Buy Clean California Act.


September 26, 2018
DGS invited awarding agencies to a working group meeting at their headquarters to discuss acceptable documentation for AB 262 compliance, standardized language for requesting EPDs in solicitations, industry compliance concerns and next steps.
June 26, 2018
DGS met with external stakeholders to share information about the implementation of the Buy Clean California Act.
Discussion topics included the Global Warming Potential (GWP) limit methodology for the eligible materials and agency compliance policy.  The event included a program operator to discuss any issues related to the Product Category Rule (PCR) and Environmental Product Declarations (EPDs).

For more information about the AB 262 implementation process click on one of the links below.


U.S. Green Building Council is proud to assist manufacturers of steel, flat glass, and mineral wool insulation through the Buy Clean Incentive Program by offering incentives of up to $15,000. The incentive can be used to acquire their Environmental Product Declaration and green their own supply chain and manufacturing processes. The key date is July 1, 2021, when the EPDs will be required by the state for procurement on new projects.

i. Program Operator Consortium (POC) develops Product Category Rules (PCR), reviews and verifies Environmental Product Declarations (EPD), reports Life Cycle Assessment (LCA), and publishes customized Type III environmental declaration formats in accordance with the International Standard ISO 14025.

Find PCRs and EPDs on their website

ii. UL Environmental program operator develops PCRs and verifies EPDs alongside the POC.

Find PCRs that are under development or may not be covered by the POC.
Find EPDs in the UL SPOT database. Once there, enter the product name, look for certifications then EPDs.

Contact Us

Email with comments or questions regarding AB 262. To ensure that your questions receive accurate and timely responses, please provide your name, phone number, and agency/organization name.
What's New