On-Site Fueling

On-site fueling means the agency stores and dispenses its own fuel: a tank, a dispenser, a controller that identifies vehicle and driver, and a record of every transaction. The alternative is commercial fuel cards at retail stations, and most public fleets run some of each.

The case for it is control and resilience rather than price per gallon. Transactions tie to a vehicle and an odometer without depending on a driver picking the right station, and the fleet can dispense when commercial stations cannot, which is what matters in a storm, an outage or an evacuation. For an agency expected to keep working through the event that closed everything else, that is a service-level requirement rather than a preference.

The cost is that storing fuel makes the agency a regulated tank owner. Underground tanks fall under the federal UST rules at 40 CFR part 280, covering registration, release detection, spill and overfill prevention, corrosion protection, operator training and recordkeeping. EPA defines a UST system as a tank and connected underground piping with at least 10% of their combined volume underground, so a tank most people would call aboveground can still qualify on its piping.

Aboveground storage brings the SPCC rule at 40 CFR part 112 instead. A facility needs a spill prevention plan when it is non-transportation-related, holds more than 1,320 gallons of aggregate aboveground oil storage capacity and could reasonably be expected to discharge to navigable waters. Capacity is what counts, not how much fuel is in the tank, which catches agencies that sized a tank for a storm and keep it mostly empty.

States commonly run their own implementing programs with requirements at least as strict, so the state regulator is usually the one an agency actually deals with. The practical failure is rarely the tank itself. It is a lapsed operator certification, a missed walkthrough or a leak detection record nobody kept, and those are administrative duties that have to be assigned to a person by name rather than assumed.