California Reformulated Gasoline Program

This page last reviewed March 7, 2013

This page provides information on California's reformulated gasoline (CaRFG) program.  The California reformulated gasoline program set stringent standards for California gasoline that produced cost-effective emission reductions from gasoline-powered vehicles. The CaRFG program was implemented in three phases.  Phase 1, which was implemented in 1991,  eliminated lead from gasoline and set regulations for deposit control additives and reid vapor pressure (RVP).  Phase 2 CaRFG (CaRFG2) set specifications for sulfur, aromatics, oxygen, benzene, T50, T90, Olefins, and RVP and established a Predictive Model.  Phase 3 CaRFG (CaRFG3) eliminated methyl-tertiary-butyl-ether from California gasoline.

Background

• Phase 3 Reformulated Gasoline (CaRFG3 - Implemented 1999)
• Frequently Asked Questions
• Phase 2 Reformulated Gasoline (CaRFG2 - Implemented 1996)
• Federal Reformulated Gasoline (FedRFG)
• Phase 1 Reformulated Gasoline (CaRFG1 - Implemented 1992)
• Reid Vapor Pressure (RVP) Requirements
• Federal and California Oxygenate Programs (Implemented 1992)

Regulation

• California Reformulated Gasoline Regulations  (PDF‑493k) or (DOCX‑819k)
• Predictive Model and Procedures Documents
• Fuel Test Methods and Site-Specific Test Method Guidelines
• Regulatory Advisories

Other Information

• Workshops / Meetings
• Contacts
• Formal Rulemaking Documents
• CARBOB Commingling Issues (PDF)
• Predictive Model Development Page
• Deposit Control Additives

Related Links

• California Certification Fuel
• Gasoline / Diesel Price and Supply Status
• ARB Fuels Enforcement
  
• U.S. EPA Gasoline Webpage