Vapor recovery systems are mandatory for which type of systems?

Vapor recovery systems are crucial for minimizing the release of volatile organic compounds (VOCs) into the atmosphere and are specifically designed for most motor fuel systems. This is particularly important for systems that dispense gasoline or similar fuels, as these substances can evaporate easily and contribute to air pollution and health problems.

In the case of diesel dispensing systems, vapor recovery is generally not required because diesel fuel is less volatile than gasoline, and the amount of vapor produced during diesel dispensing is significantly lower. Therefore, the regulation primarily targets gasoline and other high-VOC fuels.

While LPG systems may have specific requirements related to their use, vapor recovery systems are not exclusively mandated for them. Thus, the focus is predominantly on motor fuel systems, with diesel often excluded from the requirements. This distinction makes the choice referring to most motor fuel systems, except for diesel, the accurate answer regarding vapor recovery system mandates.