An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

SPCC Rule Amendments: Streamlined Requirements for Mobile Refuelers

In December 2006, EPA amended the Spill Prevention, Control, and Countermeasure (SPCC) rule to streamline some of the requirements for facilities with smaller oil storage capacity and specific types of equipment. This includes requirements for sized secondary containment for mobile refuelers. EPA streamlined the requirement because providing sized secondary containment for vehicles that move frequently within a facility to perform refueling operations can raise safety and security concerns.

Beginning on the effective date of the rule, owners and operators of mobile refuelers at a non-transportation-related facility no longer need to provide sized secondary containment systems. However, the SPCC rule’s general secondary containment requirements still apply to mobile refuelers, as well as containment requirements associated with oil transfers. 

What is a mobile refueler?

A mobile refueler is a bulk storage container onboard a vehicle or being towed that is designed or used solely to store and transport fuel for transfer into or from:

  • an aircraft,
  • motor vehicle,
  • locomotive,
  • vessel,
  • ground service equipment, or
  • other oil storage containers. 

Mobile refuelers may be found at the following non-transportation-related locations:

  • industrial sites,
  • airports,
  • military bases,
  • construction sites,
  • chemical complexes,
  • mining sites,
  • seaport terminals, and
  • tank truck home bases.

Top of Page

How do the changes apply to mobile refuelers?

Mobile refuelers are now exempt from the following sized secondary containment provisions that still apply to all other bulk storage containers and mobile/portable bulk storage containers:

  • Sections 112.8(c)(2) and (11) for petroleum oils
  • Sections 112.12(c)(2) and (11) for animal fats and vegetable oils

These provisions previously required sized secondary containment for mobile refuelers, such as a dike or catchment basin, of sufficient size to contain the capacity of the largest compartment or container on a mobile refueler along with enough room to contain precipitation. 

The exemption does not apply to refuelers used primarily for the bulk storage of oil in a fixed location in place of stationary containers (e.g., a refueler that no longer can move or conduct transfers and is left only to serve as a bulk storage container).

Top of Page

What secondary containment requirements continue to apply?

General secondary containment requirements in §112.7(c) still apply to mobile refuelers at SPCC-regulated facilities.

General secondary containment should be designed to address the most likely discharge from the container and from oil transfers into or from the mobile refueler. The general secondary containment requirements:

  • do not prescribe a size for a secondary containment structure but require that the containment system prevent the spilled oil from escaping the system prior to clean up occurring,
  • require appropriate containment and/or diversionary structures or equipment to prevent a discharge to navigable waters or adjoining shorelines, and
  • allow for the use of certain types of active containment measures that prevent a discharge to navigable waters or adjoining shorelines.

Top of Page

When could active containment measures be appropriate?

For discharges that occur only during manned activities, such as transfers, an active measure may be appropriate. The measure should be properly constructed and deployed in a timely manner, to contain the volume and rate of oil discharge.

These active measures could also be applied to other situations, as deemed appropriate by a Professional Engineer (or owner/operator of a qualified facility).

Top of Page

Do sized secondary containment requirements still apply to other mobile or portable bulk storage containers?

Yes.  Mobile or portable bulk storage containers (such as drums, skids, railcars, and totes) must comply with the sized secondary requirements.

Top of Page

When is a mobile refueler or its activities subject to SPCC requirements?

According to a 1971 Memorandum of Understanding between EPA and the Department of Transportation (DOT), EPA regulates non-transportation-related facilities and DOT regulates transportation-related facilities:

  • Mobile refuelers that operate solely within the confines of a non-transportation-related facility subject to the SPCC rule must comply with the general secondary containment requirements during all periods of operation.
  • Transfer operations to or from other mobile refuelers (i.e., transportation-related) involved in a transfer operation at an SPCC-regulated facility would be subject to the loading/unloading rack requirements when the transfer occurs at a rack or the general secondary containment requirements for all other transfers.

For more information on EPA’s jurisdiction, please see: Appendix A to 40 CFR part 112.

Top of Page