California ICC UST Service Technician Practice Exam

What is a key aspect of Stage II Vapor Recovery systems?

1. Only applicable during emergencies

2. Facilitates the recovery of vapors during fuel dispensing

3. Required for tank inspections

4. Only approved for gasoline

The correct answer is: Facilitates the recovery of vapors during fuel dispensing

The key aspect of Stage II Vapor Recovery systems is that they facilitate the recovery of vapors during fuel dispensing. These systems are specifically designed to capture vapors that are displaced from a vehicle's fuel tank when gasoline is dispensed. This is essential for reducing air pollution and minimizing the release of harmful volatile organic compounds (VOCs) into the atmosphere, which can contribute to smog and respiratory problems. By capturing vapors during the refueling process, Stage II systems help to ensure that these emissions are collected and either returned to the storage tank or sent through an appropriate treatment system. This recovery process not only benefits the environment but also improves fuel efficiency, as fewer vapors are wasted. The other options do not accurately represent the primary function of Stage II Vapor Recovery systems. For example, they are not limited to emergencies, nor are they only applicable to tank inspections or specifically approved for gasoline. Instead, their main purpose is to manage and recover vapors during standard operations in fueling situations.