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 (Assembly Bill 1817, Chapter 37, Statutes of 2018), signed into law June 27, 2018, amends the existing language and implementation dates.

AB 262 External Stakeholder Comments

The California Department of General Services is posting this 45-day Public Notice of proposed Implementation to the Buy Clean California Act (AB 262, Bonta. 2017).  

Please take the quick AB 262 Event survey!

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

· Proposed SCM Language

· Proposed Methodology

· Presentation

·Calculation Data


Comment Period:  June 26, 2018 – Aug. 10, 2018

This comment period is intended to increase participation in the implementation process. We appreciate your participation at the event. The comments will be carefully considered by DGS and are valuable input as we refine proposals prior to implementation.

Comments will be acknowledged but not responded to instantaneously and DGS responses will be posted.

· Please use your first and last name including an email address which may be used to contact you for clarification if needed.

· Keep your comments reasonably brief and related to the topic at hand. Comments and questions must be sent by email to with Subject: June 26, 2018 AB 262 External Stakeholder Outreach Event or mail to Department of General Services, 707 3rd Street, West Sacramento, CA 95605, Attn: Engineering-DGS June 26, 2018 AB 262 External Stakeholder Outreach Event on your department or company letterhead.

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.



Tuesday June 26, 2018

DGS will host the AB 262 External Stakeholder Outreach Event to share information about the implementation of the Buy Clean California Act. Please take a look at the meeting agenda here.

Seating is limited and registration is required. A simultaneous webcast will be provided for those who cannot attend in person or if the venue becomes full.

Discussion topics will include the Global Warming Potential (GWP) limit methodology for the eligible materials and agency compliance policy.  The event will also include a program operator to discuss any issues related to the Product Category Rule (PCR) and Environmental Product Declarations (EPDs).

Event location:
DGS Headquarters- First Floor Auditorium
707 3rd Street
West Sacramento, CA  95605

Please send an e-mail to to register. 

June 5, 2018
DGS met with state agencies for a work-group session to solidify a policy message that can be communicated to external stakeholders. Agencies will be asked to provide direction regarding the implementation and compliance of AB 262.

Click here to view the agenda.

April 18, 2018
DGS met with state agencies to present its draft global warming potential methodology and proposed limits. In the time remaining, agencies spoke to their roles in AB 262 implementation: eligible public works project, material acceptance procedures, reporting material use, environmental product declaration verification, tracking, reporting and more.

Agencies in attendance; Department of General Services, California Government Operations Agency, California Military Department, Department of Parks and Recreation, California State University Chancellor’s Office, Department of Transportation, University California Office of the President and Department of Water Resources. 

March 15, 2018
DGS invited state agencies affected by AB 262 for a follow-up discussion on March 15, 2018 at their offices. DGS presented its latest findings and state agencies discussed the next steps for implementation of the law. 

Agencies in attendance; California Department of Corrections and Rehabilitation, Department of Transportation and University of California, Office of the President.

 Find meeting materials below.
• Sample Environmental Product Declaration (EPD)

Dec. 22, 2017
Agencies and Universities impacted by AB 262 should identify a member(s) from your organization to participate in one to four product category focus groups: 1) carbon steel rebar, 2) flat glass, 3) mineral wool board insulation and 4) structural steel steal. The role of the participant will be to identify a process for receiving and acceptance of eligible materials during the public works project, tracking facility-specific Environmental Product Declarations related to a project, reducing emissions over time and reporting obstacles and effectiveness to reduce GWP. Send their contact information to to participate in one or more of our GWP Product Category focus groups.

Dec. 21, 2017
DGS held a Kickoff Event with state agencies to provide an overview of AB 262, discuss investigations to date challenges in developing the average GWP and next steps to implementation.


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, 2019, 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.
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