Under what condition must a vehicle fuel dispenser area be ventilated?

A vehicle fuel dispenser area must be ventilated when it is under a weather shelter or canopy because such structures can trap gas vapors and limit air circulation. Proper ventilation is crucial in preventing the accumulation of potentially hazardous gases, which can lead to dangerous situations such as fires or explosions.

Enclosed areas are also critical when it comes to ventilation, but they may not inherently have the same risk profile as those under a canopy, which can block natural airflow while creating a concentrated environment for gases. Being outdoors naturally allows more air movement and less likelihood of gas accumulation, while proximity to water does not specifically dictate the need for ventilation as much as the other factors do. Thus, the rule specifically highlights canopied areas to ensure safety standards are met.