What are CARB's most recent vapor recovery regulations known as?

• A. EVR (enhanced vapor recovery)
• B. CVR (California vapor recovery)
• C. PVR (protective vapor recovery)
• D. ORVR (onboard refueling vapor recovery)

Answer: (A)

The correct answer is Enhanced Vapor Recovery (EVR), which represents California's most up-to-date regulations for vapor recovery systems. The EVR program was developed to further reduce the emissions of volatile organic compounds (VOCs) during the fueling process at gasoline stations. This set of regulations evolved from earlier vapor recovery systems and took into account new technology and methods for capturing vapor.

The importance of EVR lies in its comprehensive approach to enhancing the controls in place for vapor recovery, ultimately aiming for higher efficiency and improved air quality. The regulatory framework provides guidelines and requirements for both existing and new equipment, ensuring that operators effectively minimize emissions.

While the other terms do relate to vapor recovery in some capacity, they either refer to outdated systems or specific context that does not reflect the latest standard set forth by California’s regulatory body. For example, California Vapor Recovery (CVR) and Onboard Refueling Vapor Recovery (ORVR) refer to earlier or alternative regulations and methods, while Protective Vapor Recovery (PVR) is not a recognized program in regards to California's comprehensive incident management of vapor recovery systems.