Alternative Compliance Options

This page last reviewed July 15, 2015

The California Reformulated Gasoline and CARB Diesel regulations offer alternative compliance options for companies to meet the motor vehicle fuels standards. These compliance options allow refiners and importers of CaRFG3 and California diesel fuel flexibility in production methods. Alternative options include: predictive model limits, designated alternative limits, and certified diesel fuel formulations. Certain reporting requirements must be met, including providing the ARB with data regarding the specific alternative compliance limits. A system of reporting has been developed by the ARB that allows producers, importers, and small refiners to submit this information.

Electronic Reporting

When a company elects to use an alternative compliance option, it must notify ARB and provide information regarding its alternative compliance limits. Specific electronic forms are available for producers, importers, and small refiners to email information regarding Predictive Model, CARBOB Model, and Diesel Fuel Compliance Options. These forms may be found on our Enforcement Program Forms web page. A Users' Guide for CaRFG Electronic Reporting, which describes the reporting process in greater detail, is available for Producers (pdf 26K) and for Importers (pdf 36K).

Monitoring of Compliance Data

The monitoring and evaluation of alternative compliance data is a crucial part of the ARB's enforcement of the motor fuel regulations. When producers and importers of California gasoline submit their notifications to the ARB, Enforcement Division staff reviews the notifications for timeliness, accuracy, emissions calculations, and formulation characteristics. Enforcement staff also conduct inspections to verify that the notifications are accurate and that the companies' motor fuel complies with the alternative compliance limits and other applicable motor fuel regulations and protocols.

Self-Reporting of Violations

If a company finds that it has reported in error or discovers that its fuel is in violation of a fuels standard, the company may self-report the violation before it is discovered by the ARB in order to reduce the risk of incurring costly penalties. This practice of disclosure and increased communication has resulted in a working dialogue between the ARB and fuels producers, importers, and retailers.

Contact Us

Fuels staff is able to answer questions and provide clarification about the regulations. For more information about alternative compliance options or reporting concerns, please contact Mark Stover, Branch Chief, Field Operations Branch, at (916) 229-0757.