Aviation Fuel Storage Regulations: SPCC, Part 139, and Penalties

Aviation fuel storage regulations sit at the intersection of several federal programs, industry fire codes, and state and local permits. The EPA’s Spill Prevention, Control, and Countermeasure (SPCC) rule and its Underground Storage Tank (UST) program govern the environmental side. The FAA regulates fuel handling at certificated airports under 14 CFR Part 139. NFPA 407 and NFPA 30 set the fire-safety design standards. EPCRA imposes chemical inventory reporting. State and local authorities layer permits, inspections, and often stricter numerical requirements on top. Civil penalties for violating these rules run to $59,114 per day per violation as of January 2025, and that is before any spill occurs.

When the SPCC Rule Applies

The SPCC rule at 40 CFR Part 112 is the anchor of federal fuel storage regulation. It comes from Section 311 of the Clean Water Act, which sets a national policy of zero oil discharges into navigable waters and directs the EPA to prescribe prevention and containment requirements for onshore and offshore facilities.¹

A facility is covered if its aggregate aboveground oil storage capacity exceeds 1,320 gallons (counting only containers of 55 gallons or larger), or if its completely buried storage capacity exceeds 42,000 gallons.² Aviation fuel operations essentially always cross the aboveground threshold, so SPCC compliance is a given.

Covered facilities must prepare and maintain a written SPCC Plan describing containment measures, operating procedures, and personnel training. A licensed Professional Engineer must certify the plan. “Tier I” and “Tier II” qualified facilities — those with 10,000 gallons or less of aboveground capacity and no single container above 5,000 gallons — can self-certify without a PE.³ Airport fuel farms rarely fit under those numbers.

Secondary Containment

Bulk storage tank installations (except mobile refuelers) must have secondary containment large enough to hold the entire capacity of the largest single container in the area, plus freeboard for precipitation. Dikes, berms, containment curbs, and catchment basins are typical.⁴

The commonly cited “110 percent rule” does not come from SPCC. The federal rule requires the largest tank’s full capacity plus precipitation freeboard, not a fixed percentage. NFPA 30 sets 110 percent for certain single-wall aboveground installations, and many state and local fire codes have adopted the same figure.⁵ Because aviation fuel facilities have to satisfy both federal environmental rules and state or local fire codes, 110 percent is a sensible design target even though SPCC alone doesn’t require it.

Walls and flooring must be impervious enough to hold the discharged oil until cleanup. Drainage inside diked areas has to route any collected fuel to a safe holding area, never to storm drains or surface water.⁴

Tank Integrity Testing

Aboveground storage tanks must be tested or inspected for structural integrity on a documented schedule and whenever material repairs are made. Operators also have to inspect the exterior of each tank regularly for deterioration, leaks, or oil pooling inside dikes. Acceptable methods include visual inspection, hydrostatic testing, ultrasonic testing, radiographic testing, and acoustic emissions testing.⁶ Which method fits depends on tank construction, age, and service history. A reactive “we’ll look when something seems off” approach does not satisfy the regulation.

Underground Storage Tanks

Underground tanks are covered by a separate program at 40 CFR Part 280, run by the EPA and delegated to state agencies in most states. The requirements are more prescriptive than for aboveground tanks because underground leaks are hard to detect.

Every underground tank must be protected from corrosion, using fiberglass-reinforced plastic construction, cathodically protected steel with a dielectric coating, or steel clad with a non-corrodible jacket. Tanks and piping installed or replaced after April 11, 2016 must also have secondary containment and interstitial monitoring — a double-wall or liner system that captures leaks between the barriers and triggers an alert.⁷ Older systems may use other leak-detection methods, such as automatic tank gauging capable of detecting leaks as small as 0.2 gallons per hour.⁸

All underground systems need spill prevention equipment at the fill pipe to catch drips when hoses are disconnected. They also need overfill prevention that either shuts off flow at 95 percent capacity or triggers an alarm at 90 percent.⁷

Financial Responsibility for Underground Tanks

Owners and operators of petroleum USTs have to demonstrate the financial ability to pay for corrective action and to compensate third parties for damages from leaks. The federal minimums under 40 CFR 280.93 are:

Per occurrence: $1 million for petroleum marketing facilities or facilities handling an average of more than 10,000 gallons per month; $500,000 for other petroleum UST owners and operators.
Annual aggregate: $1 million for operators of 1 to 100 tanks; $2 million for operators of 101 or more tanks.

These are the floor. States can require more.⁹ Acceptable mechanisms include commercial insurance (which must provide on-site corrective action coverage and use specific regulatory language), self-insurance through a financial test showing adequate tangible net worth and working capital, surety bonds, letters of credit, trust funds, and state assurance funds where available.¹⁰ Most airport fuel operators buy commercial environmental liability insurance, because the self-insurance financial test requires net worth that smaller operators cannot show.

Fuel Handling at Part 139 Airports

Airports certificated under 14 CFR Part 139 face additional FAA fuel-safety obligations. Section 139.321 requires the certificate holder to establish and maintain FAA-authorized standards protecting against fire and explosions in the storage, dispensing, and handling of fuel. Those standards cover facilities, procedures, and personnel training, and they address bonding, public protection, access control, and fire safety across fuel farms, mobile fuelers, fueling pits, and fueling cabinets.¹¹

Training

At least one supervisor for each fueling agent must complete an FAA-authorized aviation fuel training course in fire safety before starting duties, or within 90 days of hire, with recurrent training every 24 consecutive calendar months. Every other employee who fuels aircraft, accepts fuel shipments, or handles fuel must get initial on-the-job fire safety training from that certified supervisor, with recurrent instruction on the same 24-month cycle.¹¹

Inspections and Records

The certificate holder must inspect the physical facilities of each tenant fueling agent at least once every three consecutive months and keep each inspection record for at least 12 consecutive calendar months. Each fueling agent has to give written annual confirmation that its employees have completed the required training; those confirmations must also be kept at least 12 months.¹¹ FAA inspectors show up unannounced, so a records gap in the current cycle is an immediate compliance problem.

Advisory Circular 150/5230-4C

FAA Advisory Circular 150/5230-4C provides detailed guidance on aircraft fuel storage, handling, training, and dispensing at airports, and it references NFPA 407 and other industry standards heavily. The AC is not itself a regulation. Compliance becomes mandatory for any project funded through the Airport Improvement Program or the Passenger Facility Charge program, however, so most commercial airports end up following it.¹²

Fuel Quality and Filtration

Water and particulate contamination can cause engine flameouts, so quality testing is not optional. The standard field test is the clear-and-bright check: a fuel sample drawn into a clean, dry glass container should appear bright with a fluorescent quality, not cloudy or hazy, since haze signals dissolved or suspended water. The related white-bucket test uses a clean white porcelain or stainless steel bucket, with the fuel swirled into a vortex and food dye dropped in to reveal any water that collects at the bottom.¹³

Filtration systems throughout the fuel supply chain must meet EI Specification 1581, published by the Energy Institute. This specification sets minimum laboratory performance, mechanical requirements, and qualification procedures for filter/water separators used at any point in the jet fuel or aviation gasoline supply chain. Filters are classified by expected contamination levels: Type S for locations where significant free water and particulate are expected, Type S-LW where minimal free water is expected, and Type S-M for certain into-aircraft applications with minimal contamination.¹⁴

Fire Safety Design

Two NFPA standards dominate design: NFPA 407 (Standard for Aircraft Fuel Servicing) and NFPA 30 (Flammable and Combustible Liquids Code). NFPA 407 requires fuel storage, piping, and dispensing systems to comply with NFPA 30 in addition to its own aircraft-specific rules.¹⁵

Piping, valves, and fittings in aviation fuel service must be steel or stainless steel, designed for the working pressures and structural stresses involved, and compliant with ASME B31.3. Tank separation distances from buildings, property lines, runways, and taxiways depend on tank size and type. NFPA 407 also prohibits ABC multipurpose dry chemical extinguishers on fueling vehicles, on fueling ramps, or at airport fuel facilities within 500 feet of aircraft operating areas.¹⁵

Every fueling vehicle must carry fire extinguishers rated at least 40-B:C with a minimum 20-pound dry chemical capacity: two per tank truck (one on each side) and one per hydrant servicing vehicle. The same rating applies at each fueling vehicle loading position and each emergency fuel shutoff control station. All equipment involved in fueling must be properly grounded and bonded before and during flow to control static electricity. Emergency shutoff stations must be accessible at ground level, between 20 and 100 feet from fuel dispensers.¹⁵

EPCRA Tier II Reporting

Facilities that store hazardous chemicals above threshold quantities have to comply with the Emergency Planning and Community Right-to-Know Act. Section 312 of EPCRA requires Tier II hazardous chemical inventory reports to the state emergency response commission, local emergency planning committee, and local fire department. The standard reporting threshold is 10,000 pounds of a hazardous chemical present at the facility at any one time.¹⁶ Ten thousand pounds of Jet A is roughly 1,500 gallons, so any real airport fuel farm is above the threshold. Aviation fuel facilities do not qualify for the higher retail gas station thresholds.¹⁷

Penalties for Non-Compliance

Civil penalties under the Clean Water Act are adjusted for inflation each year. As of January 2025, penalties for violations under Section 311(b)(7)(A) can reach $59,114 per violation per day.¹⁸ That penalty accrues daily. A facility operating for months without a compliant SPCC plan or adequate secondary containment can face hundreds of thousands of dollars in exposure before any fuel is spilled.

Separate penalties apply under the UST program for failures in leak detection, corrosion protection, or financial responsibility. State environmental agencies can impose their own penalties on top of federal ones. An actual spill triggers a different scale of liability altogether: cleanup costs, natural resource damages, and third-party claims that dwarf administrative fines.

State and Local Permits

Before you construct or modify a fuel storage facility, you need local authorization through building, zoning, and fire permits. The permitting process requires facility designs to demonstrate compliance with the federal standards above (a certified SPCC plan, UST regulations where applicable, NFPA specifications) plus whatever additional requirements the state or municipality imposes. The local fire marshal and state environmental agency conduct pre-operational inspections before an operating permit is issued.

Operating permits usually renew annually and carry registration fees that vary by jurisdiction. Ongoing compliance includes submitting proof of financial responsibility, keeping inventory records and leak-detection monitoring data, and cooperating with routine inspections. A lapsed permit, missed renewal, or failed inspection can result in suspension or revocation, which shuts fueling operations down until the deficiency is fixed. For an airport, that can ground flights.

1
Office of the Law Revision Counsel. 33 USC 1321 – Oil and Hazardous Substance Liability
2
eCFR. 40 CFR 112.1 – General Applicability
3
eCFR. 40 CFR 112.6 – Qualified Facilities
4
eCFR. 40 CFR 112.8 – SPCC Plan Requirements for Onshore Facilities
5
National Fire Protection Association. NFPA 30 Technical Committee on Tank Storage and Piping Systems
6
United States Environmental Protection Agency. Bulk Storage Container Inspection Fact Sheet
7
eCFR. 40 CFR 280.20 – Performance Standards for New UST Systems
8
US Environmental Protection Agency. Release Detection for Underground Storage Tanks – Internal Methods
9
GovInfo. 40 CFR 280.93 – Amount and Scope of Required Financial Responsibility
10
US Environmental Protection Agency. UST Technical Compendium – Financial Responsibility
11
eCFR. 14 CFR 139.321 – Handling and Storing of Hazardous Substances and Materials
12
Federal Aviation Administration. FAA Advisory Circular 150/5230-4C – Aircraft Fuel Storage, Handling, Training, and Dispensing on Airports
13
Federal Aviation Administration. AC 20-125 – Water in Aviation Fuels
14
Energy Institute. EI Specification 1581 – Specifications and Laboratory Qualification Procedures for Aviation Fuel Filter/Water Separators
15
National Fire Protection Association. NFPA 407 – Standard for Aircraft Fuel Servicing
16
US Environmental Protection Agency. EPCRA Threshold Amount for Hazardous Chemical Reporting
17
US Environmental Protection Agency. Retail Gas Stations Are Not Exempt from Tier II Reporting
18
eCFR. 40 CFR 19.4 – Statutory Civil Monetary Penalties, as Adjusted for Inflation