California Air Resources Board

Effective January 1, 2016, the Reporting and Recordkeeping requirements of section 2293.8 of the Alternative Diesel Fuels (ADF) regulation requires regulated parties to report produced, imported, and blended amounts of all biodiesel blendstock and the biodiesel blends produced. 

Note: Biodiesel on-road in-use requirements of the ADF Regulation were sunset on December 31, 2025. Beginning January 1, 2026, NOx control requirements under section 2293.6(a)(2) of the ADF Regulation for biodiesel blends up to B20 are no longer in effect for on-road applications. Biodiesel off-road in-use requirements remain in effect.

All Reporting and Recordkeeping Requirements of section 2293.8 of the ADF regulation remain in effect.

Download the latest version of the ADF reporting form for all reporting beginning Q1 2026.

• ADF Reporting Form (revised March 2026)

General Instructions:

Please complete applicable form(s) for each month in the quarter. For example, if you are a producer, please fill out "Producers" worksheet. Only fill in cells highlighted in yellow.

After completing a report (worksheet), please save the report as the naming convention provided below:

• For Producers, save the report as:  "Year_Month_CompanyName_Producer.xlsx"
• For Importers, save the report as:  "Year_Month_CompanyName_Importer.xlsx"
• For Blenders, save the report as:  "Year_Month_CompanyName_Blender.xlsx"
• Each production facility location under the same company must report separately.  For example, a Fresno facility may save the file as: "2017_May_BioCompany_Fresno_Producer.xlsx"

Monthly records are required although reporting submission is required quarterly. For example, January, February, and March reports must be submitted together anytime after the first quarter and by the end of the the second quarter.

E-mail completed reports to the ADF Email Address (preferred method) or mail to:

• Oil and Gas and GHG Mitigation Branch Chief
• 1001 I Street, P.O. Box 2815
• Sacramento, CA 95812 

ADF Reporting is due by the end of the subsequent reporting period: